Blumbus Testnet Transaction Hash (Txhash) Details

This is Testnet block explorer of Blumbus Testnet

Transaction Details

Overview State

Transaction Hash: 40657DA2E6BD88A7C127807E3CD2C4270AF1A725B47EA139961648C828694A9F

Status:

Success

Block:

5623944 60,031 Blocks Confirmations

Time:

3 days ago (2025-01-11 02:20:42 UTC)

Action:

Value:

0 DYM (0 USD)

You are viewing a Testnet transaction

DYM price:

0 USD / DYM

Gas limit & Usage by Txn:

763,279 | 476,750 (62.46%)

Fee:

0.01526558 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": "36139", "block_id": {"hash": "Ah6Hr0aGXatFnMs2p11ZQZXP7VUL4R0uzTZVDEuI2iI=", "part_set_header": {"hash": "Ah6Hr0aGXatFnMs2p11ZQZXP7VUL4R0uzTZVDEuI2iI=", "total": 1}}, "signatures": [{"signature": "AEebMpccGuDdnmZwwCVSf6BOjmPmefTKj+b1sp+bvdbJlzI80HLveSUWjA4OYQMTxJ0XKUC5exqawcs7QayuAw==", "timestamp": "2025-01-11T02:20:44.664631577Z", "block_id_flag": "BLOCK_ID_FLAG_COMMIT", "validator_address": "xl/CEWwkhP/r105V8i1sk/9mauQ="}]}, "header": {"time": "2025-01-11T02:20:44.664600789Z", "height": "36139", "version": {"app": "0", "block": "11"}, "app_hash": "HpAvxkb/kdznwGpd+HDRctedHgDaWTIzyHSx35sPWeo=", "chain_id": "odysphere_654689-1", "data_hash": "MpTWkTNVmpHiKvn1rPd3YCBN/zBcTxJ8aKIbudGZIOs=", "evidence_hash": "Tlm/JzcrEwS8CxN9G+nVZq1YsVS2prV3ivf0FLHUuEw=", "last_block_id": {"hash": "1w8/ZOrFI7Rlu5o4c3ZN+A/6zocHEFe/O4kiMqgoxus=", "part_set_header": {"hash": "1w8/ZOrFI7Rlu5o4c3ZN+A/6zocHEFe/O4kiMqgoxus=", "total": 1}}, "consensus_hash": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=", "validators_hash": "T0B3v7NyM4SUK8QZ+H/2sJdgJk4UHXDWlcQ4kNZ43us=", "last_commit_hash": "jxKQIvMa8U+vePZfofVGPXV07EbjpZAKctcgd1HIDiw=", "proposer_address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "last_results_hash": "ttQZBNdI9DPKUj+Ozy0q8vmdEhPySGSD9ZERGsPqKhA=", "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": "36133", "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

1-36139

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

ibc_client

0.0

IBC Acknowledgement (seq_no 2542) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	BE23798FBE153A2564A380D29CA80097A66B1934913ED185D36992550AB76A94
to odysphere_654689-1
v
Acknowledgement	40657DA2E6BD88A7C127807E3CD2C4270AF1A725B47EA139961648C828694A9F

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "2542", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736562600000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "36139", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"8000000000000000000","sender":"dym1glaex7q23v7naj60ek8sm2463j676t5g0cgedm","receiver":"ody1glaex7q23v7naj60ek8sm2463j676t5g7fm769","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

1736562600000000000

2542

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

2542

36139

ON_ACK

success

adym

8000000000000000000

dym1glaex7q23v7naj60ek8sm2463j676t5g0cgedm

ody1glaex7q23v7naj60ek8sm2463j676t5g7fm769

{"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 2541) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	0D4D97016B20B12F0CF71F9D092C547D8B20A8A98E07828214A8801C0BC8C63C
to odysphere_654689-1
v
Acknowledgement	40657DA2E6BD88A7C127807E3CD2C4270AF1A725B47EA139961648C828694A9F

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "2541", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736562600000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "36139", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"3000000000000000000","sender":"dym1hqen2mqfreah693sgfeaffa0gkkt2ckjwu24lc","receiver":"ody1hqen2mqfreah693sgfeaffa0gkkt2ckjldejgx","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

1736562600000000000

2541

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

2541

36139

ON_ACK

success

adym

3000000000000000000

dym1hqen2mqfreah693sgfeaffa0gkkt2ckjwu24lc

ody1hqen2mqfreah693sgfeaffa0gkkt2ckjldejgx

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
0x0f9f478f058ede5f019a1a88c37376cc44838ba2 0x0f9f478f058ede5f019a1a88c37376cc44838ba2	DYM	0	10.0
0x603871c2ddd41c26ee77495e2e31e6de7f9957e0 0x603871c2ddd41c26ee77495e2e31e6de7f9957e0	DYM	0	0
0x93354845030274cd4bf1686abd60ab28ec52e1a7 0x93354845030274cd4bf1686abd60ab28ec52e1a7	DYM	78,703,917.82700609513280201	78,703,931.497785870846458558
0x989721a433ebd4f6e49dc1687a3316f28b6ba053 0x989721a433ebd4f6e49dc1687a3316f28b6ba053	DYM	970.90257572	970.88731014
0xb0fec94f370824b5f4eb80f212d75caf125b9297 0xb0fec94f370824b5f4eb80f212d75caf125b9297	DYM	966,220.0	966,210.0
0xdc6f17bbec824fff8f86587966b2047db6ab7367 0xdc6f17bbec824fff8f86587966b2047db6ab7367	DYM	0	0
0xf1829676db577682e944fc3493d451b67ff3e29f 0xf1829676db577682e944fc3493d451b67ff3e29f	DYM	0.01553344	0.01526558

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