Blumbus Testnet Transaction Hash (Txhash) Details

This is Testnet block explorer of Blumbus Testnet

Transaction Details

Overview State

Transaction Hash: 9887BFF20AC3D4702BE1FC5911E81E270AD7851BD3DE29C0E2E645DC2898836B

Status:

Success

Block:

5659676 240,416 Blocks Confirmations

Time:

15 days ago (2025-01-13 09:07:38 UTC)

Action:

Value:

0 DYM (0 USD)

You are viewing a Testnet transaction

DYM price:

0 USD / DYM

Gas limit & Usage by Txn:

739,074 | 460,613 (62.32%)

Fee:

0.01478148 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": "98879", "block_id": {"hash": "86Wry/ZU/5snF7uSkXoc8+VuVTRozUAh4sPwNErBRx4=", "part_set_header": {"hash": "86Wry/ZU/5snF7uSkXoc8+VuVTRozUAh4sPwNErBRx4=", "total": 1}}, "signatures": [{"signature": "HtIZsvAkdhY/RK50fcfrGtAclg9AdjJMlFGxDqGF/lMKVRdRbQrSYjUuv9oloNwB7cyHiGIGRXBwJHKbZ2/CAw==", "timestamp": "2025-01-13T09:07:39.064239020Z", "block_id_flag": "BLOCK_ID_FLAG_COMMIT", "validator_address": "xl/CEWwkhP/r105V8i1sk/9mauQ="}]}, "header": {"time": "2025-01-13T09:07:39.064184237Z", "height": "98879", "version": {"app": "0", "block": "11"}, "app_hash": "2itq4j9cu4RD5vMuZ7YWOq/SNtSu4mM1LcSLYxIVXzU=", "chain_id": "odysphere_654689-1", "data_hash": "ypBu/2YA+TaRzjnJK6oz76yaPR+OXCRr33taz0mXG2A=", "evidence_hash": "Tlm/JzcrEwS8CxN9G+nVZq1YsVS2prV3ivf0FLHUuEw=", "last_block_id": {"hash": "TiXIFIryKFFBjyqp9NqCDQriF3XIA31PXFACB4F6BJ0=", "part_set_header": {"hash": "TiXIFIryKFFBjyqp9NqCDQriF3XIA31PXFACB4F6BJ0=", "total": 1}}, "consensus_hash": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=", "validators_hash": "T0B3v7NyM4SUK8QZ+H/2sJdgJk4UHXDWlcQ4kNZ43us=", "last_commit_hash": "bmtaamPdKWCxzIh1aig+neAwOf2SFjOLoTY2uxNAbM0=", "proposer_address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "last_results_hash": "Teu525oxn49TU1BqytDlLJY7P0PGJjE9d7/MxAt7/nk=", "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": "98869", "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

1-98879

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

ibc_client

0.0

IBC Acknowledgement (seq_no 11060) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	2284687B8C3EC1006173DB2B3FF8208118D4E61F0D15FB1CA1BA532C74B53743
to odysphere_654689-1
v
Acknowledgement	9887BFF20AC3D4702BE1FC5911E81E270AD7851BD3DE29C0E2E645DC2898836B

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "11060", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736759800000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "98879", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"19000000000000000000","sender":"dym1astgddz5adwpd8gmqtx7vn0s5sac9dpyyp3khd","receiver":"ody1astgddz5adwpd8gmqtx7vn0s5sac9dpy4sz3qn","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

1736759800000000000

11060

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

11060

98879

ON_ACK

success

adym

19000000000000000000

dym1astgddz5adwpd8gmqtx7vn0s5sac9dpyyp3khd

ody1astgddz5adwpd8gmqtx7vn0s5sac9dpy4sz3qn

{"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 11059) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	0C47D4AD4C83D17B7C09323ED55E9B6FD9BA9F819598B54B6349B2981333C452
to odysphere_654689-1
v
Acknowledgement	9887BFF20AC3D4702BE1FC5911E81E270AD7851BD3DE29C0E2E645DC2898836B

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "11059", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736759700000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "CocHCoQHCjZhY2tzL3BvcnRzL3RyYW5zZmVyL2NoYW5uZWxzL2NoYW5uZWwtMC9zZXF1ZW5jZXMvMTEwNTkSIAj3VX7VGCb+GNhFEr8k7HUAHtuvISOkd99yoKnzZAp8Gg0IARgBIAEqBQAC/IgMIisIARInAgT8iAwg8GJd7qEl5alaAPSm/VERH3mPxCc764C4NFIhi6vI2BggIisIARInBAj8iAwg1ptGV+uiLEH1zkawj7P8f2fMZUEZ4x0DjMe5mv8AD8AgIi0IARIGCBL8iAwgGiEgGJy3umDIcz+CGMmX9DQjfAGCri+Z2rTVDOo7IQoDmq0iKwgBEicKHvyIDCBTuhgD6JPEmxtjl84SA94cRPf+u5ZFN0aO+YW/ILCB7CAiKwgBEicMNvyIDCCE1iiWTm7bH5hOlKZrWs0C+ddja3Jpu5z06qXGT48FmCAiKwgBEicOZvyIDCBn3Jg1lyUzs3/T/GJtgtEweVk6yGdjbGHHXryo0e8lliAiLAgBEigQoAL8iAwgW+ToyBoz/IGZ9XVyhjQwtsE8eeEeiSxKMJJXDDtsnaMgIi4IARIHEuYD/IgMIBohIKZZcgmqT7awxkNgk0FGEPPKsALzcxsF1vo92qs1jiacIiwIARIoFOwG/IgMIMbJLPGavXkHcCH4JJDCBBng1vaGUIZEZj82r52Ie5dgICIsCAESKBb4DfyIDCD5VvE2QUjC5XWIyQ8OYpYkSSUnothNzIP8l2zUMn/hFiAiLAgBEigYiBT8iAwgrjEYC8AoCo3x2kG7GOaaHhtM6nrEnczcGYq5vz9eX6ogIi4IARIHGqIg/IgMIBohIP1ntzTxeVrrIdQk8qRVhlvIwUlhG9HXh3ZLYAlWdWdiIi4IARIHHKYz/IgMIBohIGROqmTvAuzA2r+/f+H2wXQBKt4SJSnQYW3gTwXUbjJJIi4IARIHHrJn/IgMIBohIDjjMfZJKCsoJ3e3LWuSCRzv8+5hAvo4uPXu+RbceYZeIi8IARIIINSvAfyIDCAaISDqTfDq0/9A9iP4KLVNyvaaBXrYwPYPVug/BOWdEjrLfCIvCAESCCL28gT8iAwgGiEgZqe5rCwwU9JipgqXVLRDrS4k8zlWsXIDWNDVqlXW6LQiLwgBEggkxMMH/IgMIBohIEwTFS3rcXF+R6XyGLLkQDi+jQqXygetsqeDAUVrqysyCvwBCvkBCgNpYmMSINyMk4/5LcVGRe85L30H3I+dLy6cmEN/uY4oeOtIUzfxGgkIARgBIAEqAQAiJQgBEiEBmcLWRrY+L9y2ES0JnTVLESUL5Zz1hRCnk0hq5GLza5IiJwgBEgEBGiCHPv/GMmY3HL7DSNhHf7HXhkPAESDSleSobHU+VfBZbiIlCAESIQF0W1bFFnjSRj34o9HrCgVWtDaU7BlsJm6/cD5YZynLHiIlCAESIQGy3KWMajo7iIigi5adUdo3/ezkDotVlSre1UbRstdL8CInCAESAQEaIANSa2xakyfSXo0zxy9qQtvuObQBzNc+YNXVYg2r7EPS", "proof_height": {"revision_height": "98879", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"5000000000000000000","sender":"dym1rrkhn88627vmldv0xaj0ws205hmdnmd8wpqa2d","receiver":"ody1rrkhn88627vmldv0xaj0ws205hmdnmd8lsn6an","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

1736759700000000000

11059

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

11059

98879

ON_ACK

success

adym

5000000000000000000

dym1rrkhn88627vmldv0xaj0ws205hmdnmd8wpqa2d

ody1rrkhn88627vmldv0xaj0ws205hmdnmd8lsn6an

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	79,192,172.921195783465280576	79,192,186.582623039294589918
0x989721a433ebd4f6e49dc1687a3316f28b6ba053 0x989721a433ebd4f6e49dc1687a3316f28b6ba053	DYM	878.57814464	878.55258468
0xdc6f17bbec824fff8f86587966b2047db6ab7367 0xdc6f17bbec824fff8f86587966b2047db6ab7367	DYM	0	0
0xf1829676db577682e944fc3493d451b67ff3e29f 0xf1829676db577682e944fc3493d451b67ff3e29f	DYM	0	0.02555996

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