ibc/core

Table of Contents

• ibc/core/channel/v1/query.proto
  • MQueryChannelClientStateRequest
  • MQueryChannelClientStateResponse
  • MQueryChannelConsensusStateRequest
  • MQueryChannelConsensusStateResponse
  • MQueryChannelRequest
  • MQueryChannelResponse
  • MQueryChannelsRequest
  • MQueryChannelsResponse
  • MQueryConnectionChannelsRequest
  • MQueryConnectionChannelsResponse
  • MQueryNextSequenceReceiveRequest
  • MQueryNextSequenceReceiveResponse
  • MQueryPacketAcknowledgementRequest
  • MQueryPacketAcknowledgementResponse
  • MQueryPacketAcknowledgementsRequest
  • MQueryPacketAcknowledgementsResponse
  • MQueryPacketCommitmentRequest
  • MQueryPacketCommitmentResponse
  • MQueryPacketCommitmentsRequest
  • MQueryPacketCommitmentsResponse
  • MQueryPacketReceiptRequest
  • MQueryPacketReceiptResponse
  • MQueryUnreceivedAcksRequest
  • MQueryUnreceivedAcksResponse
  • MQueryUnreceivedPacketsRequest
  • MQueryUnreceivedPacketsResponse
  • SQuery
• ibc/core/channel/v1/genesis.proto
  • MGenesisState
  • MPacketSequence
• ibc/core/channel/v1/channel.proto
  • MAcknowledgement
  • MChannel
  • MCounterparty
  • MIdentifiedChannel
  • MPacket
  • MPacketState
  • EOrder
  • EState
• ibc/core/channel/v1/tx.proto
  • MMsgAcknowledgement
  • MMsgAcknowledgementResponse
  • MMsgChannelCloseConfirm
  • MMsgChannelCloseConfirmResponse
  • MMsgChannelCloseInit
  • MMsgChannelCloseInitResponse
  • MMsgChannelOpenAck
  • MMsgChannelOpenAckResponse
  • MMsgChannelOpenConfirm
  • MMsgChannelOpenConfirmResponse
  • MMsgChannelOpenInit
  • MMsgChannelOpenInitResponse
  • MMsgChannelOpenTry
  • MMsgChannelOpenTryResponse
  • MMsgRecvPacket
  • MMsgRecvPacketResponse
  • MMsgTimeout
  • MMsgTimeoutOnClose
  • MMsgTimeoutOnCloseResponse
  • MMsgTimeoutResponse
  • SMsg
• ibc/core/client/v1/client.proto
  • MClientConsensusStates
  • MClientUpdateProposal
  • MConsensusStateWithHeight
  • MHeight
  • MIdentifiedClientState
  • MParams
  • MUpgradeProposal
• ibc/core/client/v1/query.proto
  • MQueryClientParamsRequest
  • MQueryClientParamsResponse
  • MQueryClientStateRequest
  • MQueryClientStateResponse
  • MQueryClientStatesRequest
  • MQueryClientStatesResponse
  • MQueryClientStatusRequest
  • MQueryClientStatusResponse
  • MQueryConsensusStateRequest
  • MQueryConsensusStateResponse
  • MQueryConsensusStatesRequest
  • MQueryConsensusStatesResponse
  • MQueryUpgradedClientStateRequest
  • MQueryUpgradedClientStateResponse
  • MQueryUpgradedConsensusStateRequest
  • MQueryUpgradedConsensusStateResponse
  • SQuery
• ibc/core/client/v1/genesis.proto
  • MGenesisMetadata
  • MGenesisState
  • MIdentifiedGenesisMetadata
• ibc/core/client/v1/tx.proto
  • MMsgCreateClient
  • MMsgCreateClientResponse
  • MMsgSubmitMisbehaviour
  • MMsgSubmitMisbehaviourResponse
  • MMsgUpdateClient
  • MMsgUpdateClientResponse
  • MMsgUpgradeClient
  • MMsgUpgradeClientResponse
  • SMsg
• ibc/core/commitment/v1/commitment.proto
  • MMerklePath
  • MMerklePrefix
  • MMerkleProof
  • MMerkleRoot
• ibc/core/connection/v1/connection.proto
  • MClientPaths
  • MConnectionEnd
  • MConnectionPaths
  • MCounterparty
  • MIdentifiedConnection
  • MParams
  • MVersion
  • EState
• ibc/core/connection/v1/query.proto
  • MQueryClientConnectionsRequest
  • MQueryClientConnectionsResponse
  • MQueryConnectionClientStateRequest
  • MQueryConnectionClientStateResponse
  • MQueryConnectionConsensusStateRequest
  • MQueryConnectionConsensusStateResponse
  • MQueryConnectionRequest
  • MQueryConnectionResponse
  • MQueryConnectionsRequest
  • MQueryConnectionsResponse
  • SQuery
• ibc/core/connection/v1/genesis.proto
  • MGenesisState
• ibc/core/connection/v1/tx.proto
  • MMsgConnectionOpenAck
  • MMsgConnectionOpenAckResponse
  • MMsgConnectionOpenConfirm
  • MMsgConnectionOpenConfirmResponse
  • MMsgConnectionOpenInit
  • MMsgConnectionOpenInitResponse
  • MMsgConnectionOpenTry
  • MMsgConnectionOpenTryResponse
  • SMsg
• ibc/core/types/v1/genesis.proto
  • MGenesisState
• Scalar Value Types

ibc/core/channel/v1/query.proto

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QueryChannelClientStateRequest

QueryChannelClientStateRequest is the request type for the Query/ClientState

RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier

QueryChannelClientStateResponse

QueryChannelClientStateResponse is the Response type for the

Query/QueryChannelClientState RPC method

Field	Type	Label	Description
identified_client_state	ibc.core.client.v1.IdentifiedClientState		client state associated with the channel
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryChannelConsensusStateRequest

QueryChannelConsensusStateRequest is the request type for the

Query/ConsensusState RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier
revision_number	uint64		revision number of the consensus state
revision_height	uint64		revision height of the consensus state

QueryChannelConsensusStateResponse

QueryChannelClientStateResponse is the Response type for the

Query/QueryChannelClientState RPC method

Field	Type	Label	Description
consensus_state	google.protobuf.Any		consensus state associated with the channel
client_id	string		client ID associated with the consensus state
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryChannelRequest

QueryChannelRequest is the request type for the Query/Channel RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier

QueryChannelResponse

QueryChannelResponse is the response type for the Query/Channel RPC method.

Besides the Channel end, it includes a proof and the height from which the

proof was retrieved.

Field	Type	Label	Description
channel	Channel		channel associated with the request identifiers
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryChannelsRequest

QueryChannelsRequest is the request type for the Query/Channels RPC method

Field	Type	Label	Description
pagination	cosmos.base.query.v1beta1.PageRequest		pagination request

QueryChannelsResponse

QueryChannelsResponse is the response type for the Query/Channels RPC method.

Field	Type	Label	Description
channels	IdentifiedChannel	repeated	list of stored channels of the chain.
pagination	cosmos.base.query.v1beta1.PageResponse		pagination response
height	ibc.core.client.v1.Height		query block height

QueryConnectionChannelsRequest

QueryConnectionChannelsRequest is the request type for the

Query/QueryConnectionChannels RPC method

Field	Type	Label	Description
connection	string		connection unique identifier
pagination	cosmos.base.query.v1beta1.PageRequest		pagination request

QueryConnectionChannelsResponse

QueryConnectionChannelsResponse is the Response type for the

Query/QueryConnectionChannels RPC method

Field	Type	Label	Description
channels	IdentifiedChannel	repeated	list of channels associated with a connection.
pagination	cosmos.base.query.v1beta1.PageResponse		pagination response
height	ibc.core.client.v1.Height		query block height

QueryNextSequenceReceiveRequest

QueryNextSequenceReceiveRequest is the request type for the

Query/QueryNextSequenceReceiveRequest RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier

QueryNextSequenceReceiveResponse

QuerySequenceResponse is the request type for the

Query/QueryNextSequenceReceiveResponse RPC method

Field	Type	Label	Description
next_sequence_receive	uint64		next sequence receive number
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryPacketAcknowledgementRequest

QueryPacketAcknowledgementRequest is the request type for the

Query/PacketAcknowledgement RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier
sequence	uint64		packet sequence

QueryPacketAcknowledgementResponse

QueryPacketAcknowledgementResponse defines the client query response for a

packet which also includes a proof and the height from which the

proof was retrieved

Field	Type	Label	Description
acknowledgement	bytes		packet associated with the request fields
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryPacketAcknowledgementsRequest

QueryPacketAcknowledgementsRequest is the request type for the

Query/QueryPacketCommitments RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier
pagination	cosmos.base.query.v1beta1.PageRequest		pagination request
packet_commitment_sequences	uint64	repeated	list of packet sequences

QueryPacketAcknowledgementsResponse

QueryPacketAcknowledgemetsResponse is the request type for the

Query/QueryPacketAcknowledgements RPC method

Field	Type	Label	Description
acknowledgements	PacketState	repeated
pagination	cosmos.base.query.v1beta1.PageResponse		pagination response
height	ibc.core.client.v1.Height		query block height

QueryPacketCommitmentRequest

QueryPacketCommitmentRequest is the request type for the

Query/PacketCommitment RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier
sequence	uint64		packet sequence

QueryPacketCommitmentResponse

QueryPacketCommitmentResponse defines the client query response for a packet

which also includes a proof and the height from which the proof was

retrieved

Field	Type	Label	Description
commitment	bytes		packet associated with the request fields
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryPacketCommitmentsRequest

QueryPacketCommitmentsRequest is the request type for the

Query/QueryPacketCommitments RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier
pagination	cosmos.base.query.v1beta1.PageRequest		pagination request

QueryPacketCommitmentsResponse

QueryPacketCommitmentsResponse is the request type for the

Query/QueryPacketCommitments RPC method

Field	Type	Label	Description
commitments	PacketState	repeated
pagination	cosmos.base.query.v1beta1.PageResponse		pagination response
height	ibc.core.client.v1.Height		query block height

QueryPacketReceiptRequest

QueryPacketReceiptRequest is the request type for the

Query/PacketReceipt RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier
sequence	uint64		packet sequence

QueryPacketReceiptResponse

QueryPacketReceiptResponse defines the client query response for a packet

receipt which also includes a proof, and the height from which the proof was

retrieved

Field	Type	Label	Description
received	bool		success flag for if receipt exists
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryUnreceivedAcksRequest

QueryUnreceivedAcks is the request type for the

Query/UnreceivedAcks RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier
packet_ack_sequences	uint64	repeated	list of acknowledgement sequences

QueryUnreceivedAcksResponse

QueryUnreceivedAcksResponse is the response type for the

Query/UnreceivedAcks RPC method

Field	Type	Label	Description
sequences	uint64	repeated	list of unreceived acknowledgement sequences
height	ibc.core.client.v1.Height		query block height

QueryUnreceivedPacketsRequest

QueryUnreceivedPacketsRequest is the request type for the

Query/UnreceivedPackets RPC method

Field	Type	Label	Description
port_id	string		port unique identifier
channel_id	string		channel unique identifier
packet_commitment_sequences	uint64	repeated	list of packet sequences

QueryUnreceivedPacketsResponse

QueryUnreceivedPacketsResponse is the response type for the

Query/UnreceivedPacketCommitments RPC method

Field	Type	Label	Description
sequences	uint64	repeated	list of unreceived packet sequences
height	ibc.core.client.v1.Height		query block height

Query

Query provides defines the gRPC querier service

Method Name	Request Type	Response Type	Description
Channel	QueryChannelRequest	QueryChannelResponse	Channel queries an IBC Channel.
Channels	QueryChannelsRequest	QueryChannelsResponse	Channels queries all the IBC channels of a chain.
ConnectionChannels	QueryConnectionChannelsRequest	QueryConnectionChannelsResponse	ConnectionChannels queries all the channels associated with a connection end.
ChannelClientState	QueryChannelClientStateRequest	QueryChannelClientStateResponse	ChannelClientState queries for the client state for the channel associated with the provided channel identifiers.
ChannelConsensusState	QueryChannelConsensusStateRequest	QueryChannelConsensusStateResponse	ChannelConsensusState queries for the consensus state for the channel associated with the provided channel identifiers.
PacketCommitment	QueryPacketCommitmentRequest	QueryPacketCommitmentResponse	PacketCommitment queries a stored packet commitment hash.
PacketCommitments	QueryPacketCommitmentsRequest	QueryPacketCommitmentsResponse	PacketCommitments returns all the packet commitments hashes associated with a channel.
PacketReceipt	QueryPacketReceiptRequest	QueryPacketReceiptResponse	PacketReceipt queries if a given packet sequence has been received on the queried chain
PacketAcknowledgement	QueryPacketAcknowledgementRequest	QueryPacketAcknowledgementResponse	PacketAcknowledgement queries a stored packet acknowledgement hash.
PacketAcknowledgements	QueryPacketAcknowledgementsRequest	QueryPacketAcknowledgementsResponse	PacketAcknowledgements returns all the packet acknowledgements associated with a channel.
UnreceivedPackets	QueryUnreceivedPacketsRequest	QueryUnreceivedPacketsResponse	UnreceivedPackets returns all the unreceived IBC packets associated with a channel and sequences.
UnreceivedAcks	QueryUnreceivedAcksRequest	QueryUnreceivedAcksResponse	UnreceivedAcks returns all the unreceived IBC acknowledgements associated with a channel and sequences.
NextSequenceReceive	QueryNextSequenceReceiveRequest	QueryNextSequenceReceiveResponse	NextSequenceReceive returns the next receive sequence for a given channel.

Methods with HTTP bindings

Method Name	Method	Pattern	Body
Channel	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}
Channels	GET	/ibc/core/channel/v1/channels
ConnectionChannels	GET	/ibc/core/channel/v1/connections/{connection}/channels
ChannelClientState	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/client_state
ChannelConsensusState	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/consensus_state/revision/{revision_number}/height/{revision_height}
PacketCommitment	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/packet_commitments/{sequence}
PacketCommitments	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/packet_commitments
PacketReceipt	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/packet_receipts/{sequence}
PacketAcknowledgement	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/packet_acks/{sequence}
PacketAcknowledgements	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/packet_acknowledgements
UnreceivedPackets	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/packet_commitments/{packet_commitment_sequences}/unreceived_packets
UnreceivedAcks	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/packet_commitments/{packet_ack_sequences}/unreceived_acks
NextSequenceReceive	GET	/ibc/core/channel/v1/channels/{channel_id}/ports/{port_id}/next_sequence

ibc/core/channel/v1/genesis.proto

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GenesisState

GenesisState defines the ibc channel submodule's genesis state.

Field	Type	Label	Description
channels	IdentifiedChannel	repeated
acknowledgements	PacketState	repeated
commitments	PacketState	repeated
receipts	PacketState	repeated
send_sequences	PacketSequence	repeated
recv_sequences	PacketSequence	repeated
ack_sequences	PacketSequence	repeated
next_channel_sequence	uint64		the sequence for the next generated channel identifier

PacketSequence

PacketSequence defines the genesis type necessary to retrieve and store

next send and receive sequences.

Field	Type	Label	Description
port_id	string
channel_id	string
sequence	uint64

ibc/core/channel/v1/channel.proto

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Acknowledgement

Acknowledgement is the recommended acknowledgement format to be used by

app-specific protocols.

NOTE: The field numbers 21 and 22 were explicitly chosen to avoid accidental

conflicts with other protobuf message formats used for acknowledgements.

The first byte of any message with this format will be the non-ASCII values

`0xaa` (result) or `0xb2` (error). Implemented as defined by ICS:

https://github.com/cosmos/ibc/tree/master/spec/core/ics-004-channel-and-packet-semantics#acknowledgement-envelope

Field	Type	Label	Description
result	bytes
error	string

Channel

Channel defines pipeline for exactly-once packet delivery between specific

modules on separate blockchains, which has at least one end capable of

sending packets and one end capable of receiving packets.

Field	Type	Label	Description
state	State		current state of the channel end
ordering	Order		whether the channel is ordered or unordered
counterparty	Counterparty		counterparty channel end
connection_hops	string	repeated	list of connection identifiers, in order, along which packets sent on this channel will travel
version	string		opaque channel version, which is agreed upon during the handshake

Counterparty

Counterparty defines a channel end counterparty

Field	Type	Label	Description
port_id	string		port on the counterparty chain which owns the other end of the channel.
channel_id	string		channel end on the counterparty chain

IdentifiedChannel

IdentifiedChannel defines a channel with additional port and channel

identifier fields.

Field	Type	Label	Description
state	State		current state of the channel end
ordering	Order		whether the channel is ordered or unordered
counterparty	Counterparty		counterparty channel end
connection_hops	string	repeated	list of connection identifiers, in order, along which packets sent on this channel will travel
version	string		opaque channel version, which is agreed upon during the handshake
port_id	string		port identifier
channel_id	string		channel identifier

Packet

Packet defines a type that carries data across different chains through IBC

Field	Type	Label	Description
sequence	uint64		number corresponds to the order of sends and receives, where a Packet with an earlier sequence number must be sent and received before a Packet with a later sequence number.
source_port	string		identifies the port on the sending chain.
source_channel	string		identifies the channel end on the sending chain.
destination_port	string		identifies the port on the receiving chain.
destination_channel	string		identifies the channel end on the receiving chain.
data	bytes		actual opaque bytes transferred directly to the application module
timeout_height	ibc.core.client.v1.Height		block height after which the packet times out
timeout_timestamp	uint64		block timestamp (in nanoseconds) after which the packet times out

PacketState

PacketState defines the generic type necessary to retrieve and store

packet commitments, acknowledgements, and receipts.

Caller is responsible for knowing the context necessary to interpret this

state as a commitment, acknowledgement, or a receipt.

Field	Type	Label	Description
port_id	string		channel port identifier.
channel_id	string		channel unique identifier.
sequence	uint64		packet sequence.
data	bytes		embedded data that represents packet state.

Order

Order defines if a channel is ORDERED or UNORDERED

Name	Number	Description
ORDER_NONE_UNSPECIFIED	0	zero-value for channel ordering
ORDER_UNORDERED	1	packets can be delivered in any order, which may differ from the order in which they were sent.
ORDER_ORDERED	2	packets are delivered exactly in the order which they were sent

State

State defines if a channel is in one of the following states:

CLOSED, INIT, TRYOPEN, OPEN or UNINITIALIZED.

Name	Number	Description
STATE_UNINITIALIZED_UNSPECIFIED	0	Default State
STATE_INIT	1	A channel has just started the opening handshake.
STATE_TRYOPEN	2	A channel has acknowledged the handshake step on the counterparty chain.
STATE_OPEN	3	A channel has completed the handshake. Open channels are ready to send and receive packets.
STATE_CLOSED	4	A channel has been closed and can no longer be used to send or receive packets.

ibc/core/channel/v1/tx.proto

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MsgAcknowledgement

MsgAcknowledgement receives incoming IBC acknowledgement

Field	Type	Label	Description
packet	Packet
acknowledgement	bytes
proof_acked	bytes
proof_height	ibc.core.client.v1.Height
signer	string

MsgAcknowledgementResponse

MsgAcknowledgementResponse defines the Msg/Acknowledgement response type.

MsgChannelCloseConfirm

MsgChannelCloseConfirm defines a msg sent by a Relayer to Chain B

to acknowledge the change of channel state to CLOSED on Chain A.

Field	Type	Label	Description
port_id	string
channel_id	string
proof_init	bytes
proof_height	ibc.core.client.v1.Height
signer	string

MsgChannelCloseConfirmResponse

MsgChannelCloseConfirmResponse defines the Msg/ChannelCloseConfirm response

type.

MsgChannelCloseInit

MsgChannelCloseInit defines a msg sent by a Relayer to Chain A

to close a channel with Chain B.

Field	Type	Label	Description
port_id	string
channel_id	string
signer	string

MsgChannelCloseInitResponse

MsgChannelCloseInitResponse defines the Msg/ChannelCloseInit response type.

MsgChannelOpenAck

MsgChannelOpenAck defines a msg sent by a Relayer to Chain A to acknowledge

the change of channel state to TRYOPEN on Chain B.

Field	Type	Label	Description
port_id	string
channel_id	string
counterparty_channel_id	string
counterparty_version	string
proof_try	bytes
proof_height	ibc.core.client.v1.Height
signer	string

MsgChannelOpenAckResponse

MsgChannelOpenAckResponse defines the Msg/ChannelOpenAck response type.

MsgChannelOpenConfirm

MsgChannelOpenConfirm defines a msg sent by a Relayer to Chain B to

acknowledge the change of channel state to OPEN on Chain A.

Field	Type	Label	Description
port_id	string
channel_id	string
proof_ack	bytes
proof_height	ibc.core.client.v1.Height
signer	string

MsgChannelOpenConfirmResponse

MsgChannelOpenConfirmResponse defines the Msg/ChannelOpenConfirm response

type.

MsgChannelOpenInit

MsgChannelOpenInit defines an sdk.Msg to initialize a channel handshake. It

is called by a relayer on Chain A.

Field	Type	Label	Description
port_id	string
channel	Channel
signer	string

MsgChannelOpenInitResponse

MsgChannelOpenInitResponse defines the Msg/ChannelOpenInit response type.

Field	Type	Label	Description
channel_id	string

MsgChannelOpenTry

MsgChannelOpenInit defines a msg sent by a Relayer to try to open a channel

on Chain B. The version field within the Channel field has been deprecated.

Its value will be ignored by core IBC.

Field	Type	Label	Description
port_id	string
previous_channel_id	string		in the case of crossing hello's, when both chains call OpenInit, we need the channel identifier of the previous channel in state INIT
channel	Channel		NOTE: the version field within the channel has been deprecated. Its value will be ignored by core IBC.
counterparty_version	string
proof_init	bytes
proof_height	ibc.core.client.v1.Height
signer	string

MsgChannelOpenTryResponse

MsgChannelOpenTryResponse defines the Msg/ChannelOpenTry response type.

MsgRecvPacket

MsgRecvPacket receives incoming IBC packet

Field	Type	Label	Description
packet	Packet
proof_commitment	bytes
proof_height	ibc.core.client.v1.Height
signer	string

MsgRecvPacketResponse

MsgRecvPacketResponse defines the Msg/RecvPacket response type.

MsgTimeout

MsgTimeout receives timed-out packet

Field	Type	Label	Description
packet	Packet
proof_unreceived	bytes
proof_height	ibc.core.client.v1.Height
next_sequence_recv	uint64
signer	string

MsgTimeoutOnClose

MsgTimeoutOnClose timed-out packet upon counterparty channel closure.

Field	Type	Label	Description
packet	Packet
proof_unreceived	bytes
proof_close	bytes
proof_height	ibc.core.client.v1.Height
next_sequence_recv	uint64
signer	string

MsgTimeoutOnCloseResponse

MsgTimeoutOnCloseResponse defines the Msg/TimeoutOnClose response type.

MsgTimeoutResponse

MsgTimeoutResponse defines the Msg/Timeout response type.

Msg

Msg defines the ibc/channel Msg service.

Method Name	Request Type	Response Type	Description
ChannelOpenInit	MsgChannelOpenInit	MsgChannelOpenInitResponse	ChannelOpenInit defines a rpc handler method for MsgChannelOpenInit.
ChannelOpenTry	MsgChannelOpenTry	MsgChannelOpenTryResponse	ChannelOpenTry defines a rpc handler method for MsgChannelOpenTry.
ChannelOpenAck	MsgChannelOpenAck	MsgChannelOpenAckResponse	ChannelOpenAck defines a rpc handler method for MsgChannelOpenAck.
ChannelOpenConfirm	MsgChannelOpenConfirm	MsgChannelOpenConfirmResponse	ChannelOpenConfirm defines a rpc handler method for MsgChannelOpenConfirm.
ChannelCloseInit	MsgChannelCloseInit	MsgChannelCloseInitResponse	ChannelCloseInit defines a rpc handler method for MsgChannelCloseInit.
ChannelCloseConfirm	MsgChannelCloseConfirm	MsgChannelCloseConfirmResponse	ChannelCloseConfirm defines a rpc handler method for MsgChannelCloseConfirm.
RecvPacket	MsgRecvPacket	MsgRecvPacketResponse	RecvPacket defines a rpc handler method for MsgRecvPacket.
Timeout	MsgTimeout	MsgTimeoutResponse	Timeout defines a rpc handler method for MsgTimeout.
TimeoutOnClose	MsgTimeoutOnClose	MsgTimeoutOnCloseResponse	TimeoutOnClose defines a rpc handler method for MsgTimeoutOnClose.
Acknowledgement	MsgAcknowledgement	MsgAcknowledgementResponse	Acknowledgement defines a rpc handler method for MsgAcknowledgement.

ibc/core/client/v1/client.proto

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ClientConsensusStates

ClientConsensusStates defines all the stored consensus states for a given

client.

Field	Type	Label	Description
client_id	string		client identifier
consensus_states	ConsensusStateWithHeight	repeated	consensus states and their heights associated with the client

ClientUpdateProposal

ClientUpdateProposal is a governance proposal. If it passes, the substitute

client's latest consensus state is copied over to the subject client. The

proposal handler may fail if the subject and the substitute do not match in

client and chain parameters (with exception to latest height, frozen height,

and chain-id).

Field	Type	Label	Description
title	string		the title of the update proposal
description	string		the description of the proposal
subject_client_id	string		the client identifier for the client to be updated if the proposal passes
substitute_client_id	string		the substitute client identifier for the client standing in for the subject client

ConsensusStateWithHeight

ConsensusStateWithHeight defines a consensus state with an additional height

field.

Field	Type	Label	Description
height	Height		consensus state height
consensus_state	google.protobuf.Any		consensus state

Height

Height is a monotonically increasing data type

that can be compared against another Height for the purposes of updating and

freezing clients

Normally the RevisionHeight is incremented at each height while keeping

RevisionNumber the same. However some consensus algorithms may choose to

reset the height in certain conditions e.g. hard forks, state-machine

breaking changes In these cases, the RevisionNumber is incremented so that

height continues to be monitonically increasing even as the RevisionHeight

gets reset

Field	Type	Label	Description
revision_number	uint64		the revision that the client is currently on
revision_height	uint64		the height within the given revision

IdentifiedClientState

IdentifiedClientState defines a client state with an additional client

identifier field.

Field	Type	Label	Description
client_id	string		client identifier
client_state	google.protobuf.Any		client state

Params

Params defines the set of IBC light client parameters.

Field	Type	Label	Description
allowed_clients	string	repeated	allowed_clients defines the list of allowed client state types.

UpgradeProposal

UpgradeProposal is a gov Content type for initiating an IBC breaking

upgrade.

Field	Type	Label	Description
title	string
description	string
plan	cosmos.upgrade.v1beta1.Plan
upgraded_client_state	google.protobuf.Any		An UpgradedClientState must be provided to perform an IBC breaking upgrade. This will make the chain commit to the correct upgraded (self) client state before the upgrade occurs, so that connecting chains can verify that the new upgraded client is valid by verifying a proof on the previous version of the chain. This will allow IBC connections to persist smoothly across planned chain upgrades

ibc/core/client/v1/query.proto

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QueryClientParamsRequest

QueryClientParamsRequest is the request type for the Query/ClientParams RPC

method.

QueryClientParamsResponse

QueryClientParamsResponse is the response type for the Query/ClientParams RPC

method.

Field	Type	Label	Description
params	Params		params defines the parameters of the module.

QueryClientStateRequest

QueryClientStateRequest is the request type for the Query/ClientState RPC

method

Field	Type	Label	Description
client_id	string		client state unique identifier

QueryClientStateResponse

QueryClientStateResponse is the response type for the Query/ClientState RPC

method. Besides the client state, it includes a proof and the height from

which the proof was retrieved.

Field	Type	Label	Description
client_state	google.protobuf.Any		client state associated with the request identifier
proof	bytes		merkle proof of existence
proof_height	Height		height at which the proof was retrieved

QueryClientStatesRequest

QueryClientStatesRequest is the request type for the Query/ClientStates RPC

method

Field	Type	Label	Description
pagination	cosmos.base.query.v1beta1.PageRequest		pagination request

QueryClientStatesResponse

QueryClientStatesResponse is the response type for the Query/ClientStates RPC

method.

Field	Type	Label	Description
client_states	IdentifiedClientState	repeated	list of stored ClientStates of the chain.
pagination	cosmos.base.query.v1beta1.PageResponse		pagination response

QueryClientStatusRequest

QueryClientStatusRequest is the request type for the Query/ClientStatus RPC

method

Field	Type	Label	Description
client_id	string		client unique identifier

QueryClientStatusResponse

QueryClientStatusResponse is the response type for the Query/ClientStatus RPC

method. It returns the current status of the IBC client.

Field	Type	Label	Description
status	string

QueryConsensusStateRequest

QueryConsensusStateRequest is the request type for the Query/ConsensusState

RPC method. Besides the consensus state, it includes a proof and the height

from which the proof was retrieved.

Field	Type	Label	Description
client_id	string		client identifier
revision_number	uint64		consensus state revision number
revision_height	uint64		consensus state revision height
latest_height	bool		latest_height overrrides the height field and queries the latest stored ConsensusState

QueryConsensusStateResponse

QueryConsensusStateResponse is the response type for the Query/ConsensusState

RPC method

Field	Type	Label	Description
consensus_state	google.protobuf.Any		consensus state associated with the client identifier at the given height
proof	bytes		merkle proof of existence
proof_height	Height		height at which the proof was retrieved

QueryConsensusStatesRequest

QueryConsensusStatesRequest is the request type for the Query/ConsensusStates

RPC method.

Field	Type	Label	Description
client_id	string		client identifier
pagination	cosmos.base.query.v1beta1.PageRequest		pagination request

QueryConsensusStatesResponse

QueryConsensusStatesResponse is the response type for the

Query/ConsensusStates RPC method

Field	Type	Label	Description
consensus_states	ConsensusStateWithHeight	repeated	consensus states associated with the identifier
pagination	cosmos.base.query.v1beta1.PageResponse		pagination response

QueryUpgradedClientStateRequest

QueryUpgradedClientStateRequest is the request type for the

Query/UpgradedClientState RPC method

QueryUpgradedClientStateResponse

QueryUpgradedClientStateResponse is the response type for the

Query/UpgradedClientState RPC method.

Field	Type	Label	Description
upgraded_client_state	google.protobuf.Any		client state associated with the request identifier

QueryUpgradedConsensusStateRequest

QueryUpgradedConsensusStateRequest is the request type for the

Query/UpgradedConsensusState RPC method

QueryUpgradedConsensusStateResponse

QueryUpgradedConsensusStateResponse is the response type for the

Query/UpgradedConsensusState RPC method.

Field	Type	Label	Description
upgraded_consensus_state	google.protobuf.Any		Consensus state associated with the request identifier

Query

Query provides defines the gRPC querier service

Method Name	Request Type	Response Type	Description
ClientState	QueryClientStateRequest	QueryClientStateResponse	ClientState queries an IBC light client.
ClientStates	QueryClientStatesRequest	QueryClientStatesResponse	ClientStates queries all the IBC light clients of a chain.
ConsensusState	QueryConsensusStateRequest	QueryConsensusStateResponse	ConsensusState queries a consensus state associated with a client state at a given height.
ConsensusStates	QueryConsensusStatesRequest	QueryConsensusStatesResponse	ConsensusStates queries all the consensus state associated with a given client.
ClientStatus	QueryClientStatusRequest	QueryClientStatusResponse	Status queries the status of an IBC client.
ClientParams	QueryClientParamsRequest	QueryClientParamsResponse	ClientParams queries all parameters of the ibc client.
UpgradedClientState	QueryUpgradedClientStateRequest	QueryUpgradedClientStateResponse	UpgradedClientState queries an Upgraded IBC light client.
UpgradedConsensusState	QueryUpgradedConsensusStateRequest	QueryUpgradedConsensusStateResponse	UpgradedConsensusState queries an Upgraded IBC consensus state.

Methods with HTTP bindings

Method Name	Method	Pattern	Body
ClientState	GET	/ibc/core/client/v1/client_states/{client_id}
ClientStates	GET	/ibc/core/client/v1/client_states
ConsensusState	GET	/ibc/core/client/v1/consensus_states/{client_id}/revision/{revision_number}/height/{revision_height}
ConsensusStates	GET	/ibc/core/client/v1/consensus_states/{client_id}
ClientStatus	GET	/ibc/core/client/v1/client_status/{client_id}
ClientParams	GET	/ibc/client/v1/params
UpgradedClientState	GET	/ibc/core/client/v1/upgraded_client_states
UpgradedConsensusState	GET	/ibc/core/client/v1/upgraded_consensus_states

ibc/core/client/v1/genesis.proto

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GenesisMetadata

GenesisMetadata defines the genesis type for metadata that clients may return

with ExportMetadata

Field	Type	Label	Description
key	bytes		store key of metadata without clientID-prefix
value	bytes		metadata value

GenesisState

GenesisState defines the ibc client submodule's genesis state.

Field	Type	Label	Description
clients	IdentifiedClientState	repeated	client states with their corresponding identifiers
clients_consensus	ClientConsensusStates	repeated	consensus states from each client
clients_metadata	IdentifiedGenesisMetadata	repeated	metadata from each client
params	Params
create_localhost	bool		create localhost on initialization
next_client_sequence	uint64		the sequence for the next generated client identifier

IdentifiedGenesisMetadata

IdentifiedGenesisMetadata has the client metadata with the corresponding

client id.

Field	Type	Label	Description
client_id	string
client_metadata	GenesisMetadata	repeated

ibc/core/client/v1/tx.proto

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MsgCreateClient

MsgCreateClient defines a message to create an IBC client

Field	Type	Label	Description
client_state	google.protobuf.Any		light client state
consensus_state	google.protobuf.Any		consensus state associated with the client that corresponds to a given height.
signer	string		signer address

MsgCreateClientResponse

MsgCreateClientResponse defines the Msg/CreateClient response type.

MsgSubmitMisbehaviour

MsgSubmitMisbehaviour defines an sdk.Msg type that submits Evidence for

light client misbehaviour.

Field	Type	Label	Description
client_id	string		client unique identifier
misbehaviour	google.protobuf.Any		misbehaviour used for freezing the light client
signer	string		signer address

MsgSubmitMisbehaviourResponse

MsgSubmitMisbehaviourResponse defines the Msg/SubmitMisbehaviour response

type.

MsgUpdateClient

MsgUpdateClient defines an sdk.Msg to update a IBC client state using

the given header.

Field	Type	Label	Description
client_id	string		client unique identifier
header	google.protobuf.Any		header to update the light client
signer	string		signer address

MsgUpdateClientResponse

MsgUpdateClientResponse defines the Msg/UpdateClient response type.

MsgUpgradeClient

MsgUpgradeClient defines an sdk.Msg to upgrade an IBC client to a new client

state

Field	Type	Label	Description
client_id	string		client unique identifier
client_state	google.protobuf.Any		upgraded client state
consensus_state	google.protobuf.Any		upgraded consensus state, only contains enough information to serve as a basis of trust in update logic
proof_upgrade_client	bytes		proof that old chain committed to new client
proof_upgrade_consensus_state	bytes		proof that old chain committed to new consensus state
signer	string		signer address

MsgUpgradeClientResponse

MsgUpgradeClientResponse defines the Msg/UpgradeClient response type.

Msg

Msg defines the ibc/client Msg service.

Method Name	Request Type	Response Type	Description
CreateClient	MsgCreateClient	MsgCreateClientResponse	CreateClient defines a rpc handler method for MsgCreateClient.
UpdateClient	MsgUpdateClient	MsgUpdateClientResponse	UpdateClient defines a rpc handler method for MsgUpdateClient.
UpgradeClient	MsgUpgradeClient	MsgUpgradeClientResponse	UpgradeClient defines a rpc handler method for MsgUpgradeClient.
SubmitMisbehaviour	MsgSubmitMisbehaviour	MsgSubmitMisbehaviourResponse	SubmitMisbehaviour defines a rpc handler method for MsgSubmitMisbehaviour.

ibc/core/commitment/v1/commitment.proto

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MerklePath

MerklePath is the path used to verify commitment proofs, which can be an

arbitrary structured object (defined by a commitment type).

MerklePath is represented from root-to-leaf

Field	Type	Label	Description
key_path	string	repeated

MerklePrefix

MerklePrefix is merkle path prefixed to the key.

The constructed key from the Path and the key will be append(Path.KeyPath,

append(Path.KeyPrefix, key...))

Field	Type	Label	Description
key_prefix	bytes

MerkleProof

MerkleProof is a wrapper type over a chain of CommitmentProofs.

It demonstrates membership or non-membership for an element or set of

elements, verifiable in conjunction with a known commitment root. Proofs

should be succinct.

MerkleProofs are ordered from leaf-to-root

Field	Type	Label	Description
proofs	ics23.CommitmentProof	repeated

MerkleRoot

MerkleRoot defines a merkle root hash.

In the Cosmos SDK, the AppHash of a block header becomes the root.

Field	Type	Label	Description
hash	bytes

ibc/core/connection/v1/connection.proto

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ClientPaths

ClientPaths define all the connection paths for a client state.

Field	Type	Label	Description
paths	string	repeated	list of connection paths

ConnectionEnd

ConnectionEnd defines a stateful object on a chain connected to another

separate one.

NOTE: there must only be 2 defined ConnectionEnds to establish

a connection between two chains.

Field	Type	Label	Description
client_id	string		client associated with this connection.
versions	Version	repeated	IBC version which can be utilised to determine encodings or protocols for channels or packets utilising this connection.
state	State		current state of the connection end.
counterparty	Counterparty		counterparty chain associated with this connection.
delay_period	uint64		delay period that must pass before a consensus state can be used for packet-verification NOTE: delay period logic is only implemented by some clients.

ConnectionPaths

ConnectionPaths define all the connection paths for a given client state.

Field	Type	Label	Description
client_id	string		client state unique identifier
paths	string	repeated	list of connection paths

Counterparty

Counterparty defines the counterparty chain associated with a connection end.

Field	Type	Label	Description
client_id	string		identifies the client on the counterparty chain associated with a given connection.
connection_id	string		identifies the connection end on the counterparty chain associated with a given connection.
prefix	ibc.core.commitment.v1.MerklePrefix		commitment merkle prefix of the counterparty chain.

IdentifiedConnection

IdentifiedConnection defines a connection with additional connection

identifier field.

Field	Type	Label	Description
id	string		connection identifier.
client_id	string		client associated with this connection.
versions	Version	repeated	IBC version which can be utilised to determine encodings or protocols for channels or packets utilising this connection
state	State		current state of the connection end.
counterparty	Counterparty		counterparty chain associated with this connection.
delay_period	uint64		delay period associated with this connection.

Params

Params defines the set of Connection parameters.

Field	Type	Label	Description
max_expected_time_per_block	uint64		maximum expected time per block (in nanoseconds), used to enforce block delay. This parameter should reflect the largest amount of time that the chain might reasonably take to produce the next block under normal operating conditions. A safe choice is 3-5x the expected time per block.

Version

Version defines the versioning scheme used to negotiate the IBC verison in

the connection handshake.

Field	Type	Label	Description
identifier	string		unique version identifier
features	string	repeated	list of features compatible with the specified identifier

State

State defines if a connection is in one of the following states:

INIT, TRYOPEN, OPEN or UNINITIALIZED.

Name	Number	Description
STATE_UNINITIALIZED_UNSPECIFIED	0	Default State
STATE_INIT	1	A connection end has just started the opening handshake.
STATE_TRYOPEN	2	A connection end has acknowledged the handshake step on the counterparty chain.
STATE_OPEN	3	A connection end has completed the handshake.

ibc/core/connection/v1/query.proto

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QueryClientConnectionsRequest

QueryClientConnectionsRequest is the request type for the

Query/ClientConnections RPC method

Field	Type	Label	Description
client_id	string		client identifier associated with a connection

QueryClientConnectionsResponse

QueryClientConnectionsResponse is the response type for the

Query/ClientConnections RPC method

Field	Type	Label	Description
connection_paths	string	repeated	slice of all the connection paths associated with a client.
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was generated

QueryConnectionClientStateRequest

QueryConnectionClientStateRequest is the request type for the

Query/ConnectionClientState RPC method

Field	Type	Label	Description
connection_id	string		connection identifier

QueryConnectionClientStateResponse

QueryConnectionClientStateResponse is the response type for the

Query/ConnectionClientState RPC method

Field	Type	Label	Description
identified_client_state	ibc.core.client.v1.IdentifiedClientState		client state associated with the channel
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryConnectionConsensusStateRequest

QueryConnectionConsensusStateRequest is the request type for the

Query/ConnectionConsensusState RPC method

Field	Type	Label	Description
connection_id	string		connection identifier
revision_number	uint64
revision_height	uint64

QueryConnectionConsensusStateResponse

QueryConnectionConsensusStateResponse is the response type for the

Query/ConnectionConsensusState RPC method

Field	Type	Label	Description
consensus_state	google.protobuf.Any		consensus state associated with the channel
client_id	string		client ID associated with the consensus state
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryConnectionRequest

QueryConnectionRequest is the request type for the Query/Connection RPC

method

Field	Type	Label	Description
connection_id	string		connection unique identifier

QueryConnectionResponse

QueryConnectionResponse is the response type for the Query/Connection RPC

method. Besides the connection end, it includes a proof and the height from

which the proof was retrieved.

Field	Type	Label	Description
connection	ConnectionEnd		connection associated with the request identifier
proof	bytes		merkle proof of existence
proof_height	ibc.core.client.v1.Height		height at which the proof was retrieved

QueryConnectionsRequest

QueryConnectionsRequest is the request type for the Query/Connections RPC

method

Field	Type	Label	Description
pagination	cosmos.base.query.v1beta1.PageRequest

QueryConnectionsResponse

QueryConnectionsResponse is the response type for the Query/Connections RPC

method.

Field	Type	Label	Description
connections	IdentifiedConnection	repeated	list of stored connections of the chain.
pagination	cosmos.base.query.v1beta1.PageResponse		pagination response
height	ibc.core.client.v1.Height		query block height

Query

Query provides defines the gRPC querier service

Method Name	Request Type	Response Type	Description
Connection	QueryConnectionRequest	QueryConnectionResponse	Connection queries an IBC connection end.
Connections	QueryConnectionsRequest	QueryConnectionsResponse	Connections queries all the IBC connections of a chain.
ClientConnections	QueryClientConnectionsRequest	QueryClientConnectionsResponse	ClientConnections queries the connection paths associated with a client state.
ConnectionClientState	QueryConnectionClientStateRequest	QueryConnectionClientStateResponse	ConnectionClientState queries the client state associated with the connection.
ConnectionConsensusState	QueryConnectionConsensusStateRequest	QueryConnectionConsensusStateResponse	ConnectionConsensusState queries the consensus state associated with the connection.

Methods with HTTP bindings

Method Name	Method	Pattern	Body
Connection	GET	/ibc/core/connection/v1/connections/{connection_id}
Connections	GET	/ibc/core/connection/v1/connections
ClientConnections	GET	/ibc/core/connection/v1/client_connections/{client_id}
ConnectionClientState	GET	/ibc/core/connection/v1/connections/{connection_id}/client_state
ConnectionConsensusState	GET	/ibc/core/connection/v1/connections/{connection_id}/consensus_state/revision/{revision_number}/height/{revision_height}

ibc/core/connection/v1/genesis.proto

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GenesisState

GenesisState defines the ibc connection submodule's genesis state.

Field	Type	Label	Description
connections	IdentifiedConnection	repeated
client_connection_paths	ConnectionPaths	repeated
next_connection_sequence	uint64		the sequence for the next generated connection identifier
params	Params

ibc/core/connection/v1/tx.proto

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MsgConnectionOpenAck

MsgConnectionOpenAck defines a msg sent by a Relayer to Chain A to

acknowledge the change of connection state to TRYOPEN on Chain B.

Field	Type	Label	Description
connection_id	string
counterparty_connection_id	string
version	Version
client_state	google.protobuf.Any
proof_height	ibc.core.client.v1.Height
proof_try	bytes		proof of the initialization the connection on Chain B: `UNITIALIZED -> TRYOPEN`
proof_client	bytes		proof of client state included in message
proof_consensus	bytes		proof of client consensus state
consensus_height	ibc.core.client.v1.Height
signer	string

MsgConnectionOpenAckResponse

MsgConnectionOpenAckResponse defines the Msg/ConnectionOpenAck response type.

MsgConnectionOpenConfirm

MsgConnectionOpenConfirm defines a msg sent by a Relayer to Chain B to

acknowledge the change of connection state to OPEN on Chain A.

Field	Type	Label	Description
connection_id	string
proof_ack	bytes		proof for the change of the connection state on Chain A: `INIT -> OPEN`
proof_height	ibc.core.client.v1.Height
signer	string

MsgConnectionOpenConfirmResponse

MsgConnectionOpenConfirmResponse defines the Msg/ConnectionOpenConfirm

response type.

MsgConnectionOpenInit

MsgConnectionOpenInit defines the msg sent by an account on Chain A to

initialize a connection with Chain B.

Field	Type	Label	Description
client_id	string
counterparty	Counterparty
version	Version
delay_period	uint64
signer	string

MsgConnectionOpenInitResponse

MsgConnectionOpenInitResponse defines the Msg/ConnectionOpenInit response

type.

MsgConnectionOpenTry

MsgConnectionOpenTry defines a msg sent by a Relayer to try to open a

connection on Chain B.

Field	Type	Label	Description
client_id	string
previous_connection_id	string		in the case of crossing hello's, when both chains call OpenInit, we need the connection identifier of the previous connection in state INIT
client_state	google.protobuf.Any
counterparty	Counterparty
delay_period	uint64
counterparty_versions	Version	repeated
proof_height	ibc.core.client.v1.Height
proof_init	bytes		proof of the initialization the connection on Chain A: `UNITIALIZED -> INIT`
proof_client	bytes		proof of client state included in message
proof_consensus	bytes		proof of client consensus state
consensus_height	ibc.core.client.v1.Height
signer	string

MsgConnectionOpenTryResponse

MsgConnectionOpenTryResponse defines the Msg/ConnectionOpenTry response type.

Msg

Msg defines the ibc/connection Msg service.

Method Name	Request Type	Response Type	Description
ConnectionOpenInit	MsgConnectionOpenInit	MsgConnectionOpenInitResponse	ConnectionOpenInit defines a rpc handler method for MsgConnectionOpenInit.
ConnectionOpenTry	MsgConnectionOpenTry	MsgConnectionOpenTryResponse	ConnectionOpenTry defines a rpc handler method for MsgConnectionOpenTry.
ConnectionOpenAck	MsgConnectionOpenAck	MsgConnectionOpenAckResponse	ConnectionOpenAck defines a rpc handler method for MsgConnectionOpenAck.
ConnectionOpenConfirm	MsgConnectionOpenConfirm	MsgConnectionOpenConfirmResponse	ConnectionOpenConfirm defines a rpc handler method for MsgConnectionOpenConfirm.

ibc/core/types/v1/genesis.proto

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GenesisState

GenesisState defines the ibc module's genesis state.

Field	Type	Label	Description
client_genesis	ibc.core.client.v1.GenesisState		ICS002 - Clients genesis state
connection_genesis	ibc.core.connection.v1.GenesisState		ICS003 - Connections genesis state
channel_genesis	ibc.core.channel.v1.GenesisState		ICS004 - Channel genesis state

Scalar Value Types

.proto Type	Notes	Python Type
double		float
float		float
int32	Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead.	int
int64	Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead.	int/long
uint32	Uses variable-length encoding.	int/long
uint64	Uses variable-length encoding.	int/long
sint32	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s.	int
sint64	Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s.	int/long
fixed32	Always four bytes. More efficient than uint32 if values are often greater than 2^28.	int
fixed64	Always eight bytes. More efficient than uint64 if values are often greater than 2^56.	int/long
sfixed32	Always four bytes.	int
sfixed64	Always eight bytes.	int/long
bool		boolean
string	A string must always contain UTF-8 encoded or 7-bit ASCII text.	str/unicode
bytes	May contain any arbitrary sequence of bytes.	str