Blumbus Testnet Transaction Hash (Txhash) Details

This is Testnet block explorer of Blumbus Testnet

Transaction Details

Overview State

Transaction Hash: CEA7C557A07ED629DA3977127991763ADFA67C0B619C9103FF8CE51FE3EE2261

Status:

Success

Block:

5679528 58,369 Blocks Confirmations

Time:

3 days ago (2025-01-14 15:34:01 UTC)

Action:

Value:

0 DYM (0 USD)

You are viewing a Testnet transaction

DYM price:

0 USD / DYM

Gas limit & Usage by Txn:

741,423 | 462,179 (62.34%)

Fee:

0.01482846 DYM (0 USD)

Fee paid by:

0x989721a433ebd4f6e49dc1687a3316f28b6ba053 0x989721a433ebd4f6e49dc1687a3316f28b6ba053

Memo:

rly(v0.3.4-v2.5.2-relayer-canon-7-rc)

Index

Value

Type

0.0

IBC Update Client ibc.core.client.v1.MsgUpdateClient

👉 Explain here

{"@type": "/ibc.core.client.v1.MsgUpdateClient", "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "client_id": "07-tendermint-102", "client_message": {"@type": "/ibc.lightclients.tendermint.v1.Header", "signed_header": {"commit": {"round": 0, "height": "135626", "block_id": {"hash": "n/uRLzK4q/iBUROmK4Ur26caSQYjXpOAETa7xzAs5ro=", "part_set_header": {"hash": "n/uRLzK4q/iBUROmK4Ur26caSQYjXpOAETa7xzAs5ro=", "total": 1}}, "signatures": [{"signature": "TzSrAe4ZbXxuG6wiKP0D4U710ixJhAzqFBX1zTmRJ2u9snIg5LiP25kyT7olVy+DqJGH7XMk0jhtUmOR3P6vAw==", "timestamp": "2025-01-14T15:34:03.264546760Z", "block_id_flag": "BLOCK_ID_FLAG_COMMIT", "validator_address": "xl/CEWwkhP/r105V8i1sk/9mauQ="}]}, "header": {"time": "2025-01-14T15:34:03.264514569Z", "height": "135626", "version": {"app": "0", "block": "11"}, "app_hash": "VBSvIUgTi+FX7yj1FyYAh52wAOcrFPAgtEoYvQU73yY=", "chain_id": "odysphere_654689-1", "data_hash": "D/a3J+8BpykeVGygldARIrxcJLET4ZD3qHMZM5Qm2oo=", "evidence_hash": "Tlm/JzcrEwS8CxN9G+nVZq1YsVS2prV3ivf0FLHUuEw=", "last_block_id": {"hash": "dmtE9EQFv1ineTRMGmFbSZ+rEtyrta84WXxd4xDgOJI=", "part_set_header": {"hash": "dmtE9EQFv1ineTRMGmFbSZ+rEtyrta84WXxd4xDgOJI=", "total": 1}}, "consensus_hash": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=", "validators_hash": "T0B3v7NyM4SUK8QZ+H/2sJdgJk4UHXDWlcQ4kNZ43us=", "last_commit_hash": "phN66nfghqqVQWPRxT60513lB2ZPdGqyaoufsmjrb/I=", "proposer_address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "last_results_hash": "U5C/RmXwinNzWm2aRMOjKHnJY80aeX3JHTE44YWksZg=", "next_validators_hash": "T0B3v7NyM4SUK8QZ+H/2sJdgJk4UHXDWlcQ4kNZ43us="}}, "validator_set": {"proposer": {"address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "pub_key": {"ed25519": "qUYw6uZ6dnMPunSb/y4/QiiXOtpkEYvBfKtsn7Pv03o="}, "voting_power": "1", "proposer_priority": "0"}, "validators": [{"address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "pub_key": {"ed25519": "qUYw6uZ6dnMPunSb/y4/QiiXOtpkEYvBfKtsn7Pv03o="}, "voting_power": "1", "proposer_priority": "0"}], "total_voting_power": "0"}, "trusted_height": {"revision_height": "135589", "revision_number": "1"}, "trusted_validators": {"proposer": {"address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "pub_key": {"ed25519": "qUYw6uZ6dnMPunSb/y4/QiiXOtpkEYvBfKtsn7Pv03o="}, "voting_power": "1", "proposer_priority": "0"}, "validators": [{"address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "pub_key": {"ed25519": "qUYw6uZ6dnMPunSb/y4/QiiXOtpkEYvBfKtsn7Pv03o="}, "voting_power": "1", "proposer_priority": "0"}], "total_voting_power": "0"}}}

/ibc.core.client.v1.MsgUpdateClient

dym1nztjrfpna020deyac9585vck729khgznek4pvc

07-tendermint-102

07-tendermint

1-135626

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

ibc_client

0.0

IBC Acknowledgement (seq_no 15460) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	3475E57B5BBE66C2EF8CFCA6E12E1286CE50283779C853E7818B686BB7516265
to odysphere_654689-1
v
Acknowledgement	CEA7C557A07ED629DA3977127991763ADFA67C0B619C9103FF8CE51FE3EE2261

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "15460", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736869400000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "135626", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"7980987080000000000","sender":"dym1ul7hcg9z5k42sg3r078xhxe5xc7y9yhfqum53z","receiver":"ody1ul7hcg9z5k42sg3r078xhxe5xc7y9yhf3dgnxu","memo":"{\"denom_metadata\":{\"description\":\"Native protocol token of Dymension: DYM (adym)\",\"denom_units\":[{\"denom\":\"adym\"},{\"denom\":\"DYM\",\"exponent\":18}],\"base\":\"adym\",\"display\":\"DYM\",\"name\":\"DYM\",\"symbol\":\"DYM\"}}"}

/ibc.core.channel.v1.MsgAcknowledgement

dym1nztjrfpna020deyac9585vck729khgznek4pvc

9999-1

1736869400000000000

15460

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

15460

135626

ON_ACK

success

adym

7980987080000000000

dym1ul7hcg9z5k42sg3r078xhxe5xc7y9yhfqum53z

ody1ul7hcg9z5k42sg3r078xhxe5xc7y9yhf3dgnxu

{"denom_metadata":{"description":"Native protocol token of Dymension: DYM (adym)","denom_units":[{"denom":"adym"},{"denom":"DYM","exponent":18}],"base":"adym","display":"DYM","name":"DYM","symbol":"DYM"}}

0.0

IBC Acknowledgement (seq_no 15461) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	6047D60A72752783D89F841B259EE4608C1ACF59C46D7D5EED9C2C2ECD470C37
to odysphere_654689-1
v
Acknowledgement	CEA7C557A07ED629DA3977127991763ADFA67C0B619C9103FF8CE51FE3EE2261

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "15461", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736869400000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "135626", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"9000000000000000000","sender":"dym1khjk2ck2vkcc8ltcm2wjc0dw7a3hdkxc0ja0s6","receiver":"ody1khjk2ck2vkcc8ltcm2wjc0dw7a3hdkxc7rwg8y","memo":"{\"denom_metadata\":{\"description\":\"Native protocol token of Dymension: DYM (adym)\",\"denom_units\":[{\"denom\":\"adym\"},{\"denom\":\"DYM\",\"exponent\":18}],\"base\":\"adym\",\"display\":\"DYM\",\"name\":\"DYM\",\"symbol\":\"DYM\"}}"}

/ibc.core.channel.v1.MsgAcknowledgement

dym1nztjrfpna020deyac9585vck729khgznek4pvc

9999-1

1736869400000000000

15461

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

15461

135626

ON_ACK

success

adym

9000000000000000000

dym1khjk2ck2vkcc8ltcm2wjc0dw7a3hdkxc0ja0s6

ody1khjk2ck2vkcc8ltcm2wjc0dw7a3hdkxc7rwg8y

Advanced

Summary of state change recorded in the end of block

(therefore may contains addresses other than appeared within this transaction)

Address	Denom	Before	After
0x93354845030274cd4bf1686abd60ab28ec52e1a7 0x93354845030274cd4bf1686abd60ab28ec52e1a7	DYM	79,463,523.43303695242112943	79,463,537.097898688547649543
0x989721a433ebd4f6e49dc1687a3316f28b6ba053 0x989721a433ebd4f6e49dc1687a3316f28b6ba053	DYM	829.24893134	829.23410288
0xdc6f17bbec824fff8f86587966b2047db6ab7367 0xdc6f17bbec824fff8f86587966b2047db6ab7367	DYM	0	0
0xf1829676db577682e944fc3493d451b67ff3e29f 0xf1829676db577682e944fc3493d451b67ff3e29f	DYM	0	0.01482846

message > action

message > sender

update_client > client_id

update_client > client_type

update_client > consensus_height

update_client > consensus_heights

update_client > header

message > module

message > action

message > sender

acknowledge_packet > packet_timeout_height

acknowledge_packet > packet_timeout_timestamp

acknowledge_packet > packet_sequence

acknowledge_packet > packet_src_port

acknowledge_packet > packet_src_channel

acknowledge_packet > packet_dst_port

acknowledge_packet > packet_dst_channel

acknowledge_packet > packet_channel_ordering

acknowledge_packet > packet_connection

acknowledge_packet > connection_id

message > module

delayedack > rollapp_id

delayedack > status

delayedack > source_port

delayedack > source_channel

delayedack > destination_port

delayedack > destination_channel

delayedack > packet_sequence

delayedack > proof_height

delayedack > type

delayedack > acknowledgement

delayedack > packet_data_denom

delayedack > packet_data_amount

delayedack > packet_data_sender

delayedack > packet_data_receiver

delayedack > packet_data_memo

message > action

message > sender

acknowledge_packet > packet_timeout_height

acknowledge_packet > packet_timeout_timestamp

acknowledge_packet > packet_sequence

acknowledge_packet > packet_src_port

acknowledge_packet > packet_src_channel

acknowledge_packet > packet_dst_port

acknowledge_packet > packet_dst_channel

acknowledge_packet > packet_channel_ordering

acknowledge_packet > packet_connection

acknowledge_packet > connection_id

message > module

delayedack > rollapp_id

delayedack > status

delayedack > source_port

delayedack > source_channel

delayedack > destination_port

delayedack > destination_channel

delayedack > packet_sequence

delayedack > proof_height

delayedack > type

delayedack > acknowledgement

delayedack > packet_data_denom

delayedack > packet_data_amount

delayedack > packet_data_sender

delayedack > packet_data_receiver

delayedack > packet_data_memo