Blumbus Testnet Transaction Hash (Txhash) Details

This is Testnet block explorer of Blumbus Testnet

Transaction Details

Overview State

Transaction Hash: 601AF63580361D9E6A215364131CEB2CD8B25CD6CBB1E7CEA12550D823E9304B

Status:

Success

Block:

5628928 268,007 Blocks Confirmations

Time:

17 days ago (2025-01-11 09:59:22 UTC)

Action:

Value:

0 DYM (0 USD)

You are viewing a Testnet transaction

DYM price:

0 USD / DYM

Gas limit & Usage by Txn:

728,827 | 453,782 (62.26%)

Fee:

0.01457654 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": "48714", "block_id": {"hash": "6kFwD5UPfIfVLA3V9MODS/kUwizKjtmTAF2ozkzSHwk=", "part_set_header": {"hash": "6kFwD5UPfIfVLA3V9MODS/kUwizKjtmTAF2ozkzSHwk=", "total": 1}}, "signatures": [{"signature": "oQZcHNT/1R8EsWmaO84CCdnhluSriUEKihVo3YWSnf0PJFc36YhsDhJ5vyDVqzuSfCIZrKZKfG1CNnXu4ArRDw==", "timestamp": "2025-01-11T09:59:23.264648852Z", "block_id_flag": "BLOCK_ID_FLAG_COMMIT", "validator_address": "xl/CEWwkhP/r105V8i1sk/9mauQ="}]}, "header": {"time": "2025-01-11T09:59:23.264620889Z", "height": "48714", "version": {"app": "0", "block": "11"}, "app_hash": "0qzXO4gYW6bWwzdpfx8bmpi2UXCfE5lvCtJkV/SQtP8=", "chain_id": "odysphere_654689-1", "data_hash": "Wdn6jwo8uzVLcGbURRsZ8r9vLUUh2/3yyxS9K0GnU3c=", "evidence_hash": "Tlm/JzcrEwS8CxN9G+nVZq1YsVS2prV3ivf0FLHUuEw=", "last_block_id": {"hash": "klMeyDQLwljjXU1JUY6B6mUeWRUfa9c/lp/jcyQMZ28=", "part_set_header": {"hash": "klMeyDQLwljjXU1JUY6B6mUeWRUfa9c/lp/jcyQMZ28=", "total": 1}}, "consensus_hash": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=", "validators_hash": "T0B3v7NyM4SUK8QZ+H/2sJdgJk4UHXDWlcQ4kNZ43us=", "last_commit_hash": "6B8sRWVzmrrbZ2ibGUoVHQWDIYy+2RVyaAgX5+hqfRw=", "proposer_address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "last_results_hash": "47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=", "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": "48709", "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

1-48714

0a262f6962632e6c69676874636c69656e74732e74656e6465726d696e742e76312e48656164657212dd060ad6040a99030a02080b12126f64797370686572655f3635343638392d3118cafc02220b08fb8189bc0610d996977e2a480a2092531ec8340bc258e35d4d49518e81ea651e59151f6bd73f969fe373240c676f12240801122092531ec8340bc258e35d4d49518e81ea651e59151f6bd73f969fe373240c676f3220e81f2c4565739abadb67689b194a151d0583218cbed91572680817e7e86a7d1c3a2059d9fa8f0a3cbb354b7066d4451b19f2bf6f2d4521dbfdf2cb14bd2b41a7537742204f4077bfb3723384942bc419f87ff6b09760264e141d70d695c43890d678deeb4a204f4077bfb3723384942bc419f87ff6b09760264e141d70d695c43890d678deeb522000000000000000000000000000000000000000000000000000000000000000005a20d2acd73b88185ba6d6c337697f1f1b9a98b651709f13996f0ad26457f490b4ff6220e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b8556a204e59bf27372b1304bc0b137d1be9d566ad58b154b6a6b5778af7f414b1d4b84c7214c65fc2116c2484ffebd74e55f22d6c93ff666ae412b70108cafc021a480a20ea41700f950f7c87d52c0dd5f4c3834bf914c22cca8ed993005da8ce4cd21f09122408011220ea41700f950f7c87d52c0dd5f4c3834bf914c22cca8ed993005da8ce4cd21f09226708021214c65fc2116c2484ffebd74e55f22d6c93ff666ae41a0b08fb8189bc061094f1987e2240a1065c1cd4ffd51f04b1699a3bce0209d9e196e4ab89410a8a1568dd85929dfd0f245737e9886c0e1279bf20d5ab3b927c2219aca64a7c6d423675eee00ad10f127c0a3c0a14c65fc2116c2484ffebd74e55f22d6c93ff666ae412220a20a94630eae67a76730fba749bff2e3f4228973ada64118bc17cab6c9fb3efd37a1801123c0a14c65fc2116c2484ffebd74e55f22d6c93ff666ae412220a20a94630eae67a76730fba749bff2e3f4228973ada64118bc17cab6c9fb3efd37a18011a06080110c5fc02227c0a3c0a14c65fc2116c2484ffebd74e55f22d6c93ff666ae412220a20a94630eae67a76730fba749bff2e3f4228973ada64118bc17cab6c9fb3efd37a1801123c0a14c65fc2116c2484ffebd74e55f22d6c93ff666ae412220a20a94630eae67a76730fba749bff2e3f4228973ada64118bc17cab6c9fb3efd37a1801

ibc_client

0.0

IBC Acknowledgement (seq_no 4614) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	98E59B3D7E4F9A5AE4CB69E6F359CEC684E3DE2A3E32E66919B3DE901BBEFEFD
to odysphere_654689-1
v
Acknowledgement	601AF63580361D9E6A215364131CEB2CD8B25CD6CBB1E7CEA12550D823E9304B

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "4614", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736590100000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "CtUGCtIGCjVhY2tzL3BvcnRzL3RyYW5zZmVyL2NoYW5uZWxzL2NoYW5uZWwtMC9zZXF1ZW5jZXMvNDYxNBIgCPdVftUYJv4Y2EUSvyTsdQAe268hI6R333KgqfNkCnwaDQgBGAEgASoFAAKQ+QUiKwgBEicCBJD5BSDDWymBPzy0H81CJzonCVXz8CXlYkR/0PIV1ZdSuMQxCyAiLQgBEgYECJD5BSAaISBuVrmuX4xH3TlXrzYjokXtdy6LgexIsd/B1ITpdiuHQiIrCAESJwYQkPkFILMRZP3o0JbkPj2MBdY2O1zVDsNybrZXVXAv6OhoNA2nICItCAESBggYkPkFIBohIPFoqJZQu1Cy2lwisns/l77iebF1LrSTK6I8U7udvJirIi0IARIGCiSQ+QUgGiEgQ4nAWFF/VphcHSaZG/w3etFb5rYikf6VF/VM3tNh65oiKwgBEicMTJD5BSBFbMTDliF43VnYXWv0seOfdF2wYzJdFdF+HDozRKttkCAiLAgBEigOlAGQ+QUgePxmv5FwNzHhJEm54yBTThRUGf57GyiZ0lEYW5BfMz8gIiwIARIoEIACkPkFILoPog0ZTh8ftBuvOxV9M1a4Fjncbxy5sKsc0PgJYq7RICIsCAESKBL4A5D5BSAFbwS/Fvchb38Lmb2qip2qZ3jb2Qd8SRo5+DbLi0pdOCAiLggBEgcUlAaQ+QUgGiEg1h9orx3a8VUbYomS5V5Hs6nUl7VJ6ghsWtkNQJJCbvQiLAgBEigWgg+Q+QUgxTcfiJDKrqdeB/ZLj3uxbg8DQKJwdLN5CXtwh/Kl4hkgIiwIARIoGLwekPkFINNBh4Mu3+vd0PI208ki/hTEyMi/d7e/njnHpWS+2U0YICIuCAESBxqiKJD5BSAaISCkza7fBDJ+s72X229jdLkHIT16LIwJkQeXL2S6fv7ByiIsCAESKBz+SpD5BSA1SLG3vYoZ3dR7Av9BsBwOHIdx43rTujRTWe/N0XZjTiAiLwgBEgge/oECkPkFIBohIPH99M5mHMFGXvLvPT/UgLH/Z1ZsKBc3Hai5i+2Hj/qgIi8IARIIIIqNA5D5BSAaISA7S2u3jWABJmiuL5BoPS21WOcs9LbFdVzuCzgnCdapDAr8AQr5AQoDaWJjEiBBPJhJ2feGCWtwp32FXHfkaNAHF+86khw1JeVAspjL6RoJCAEYASABKgEAIiUIARIhAZnC1ka2Pi/cthEtCZ01SxElC+Wc9YUQp5NIauRi82uSIicIARIBARoghz7/xjJmNxy+w0jYR3+x14ZDwBEg0pXkqGx1PlXwWW4iJQgBEiEBxUVLVz/5fIfR1o84qUy7EEoaixmfl3HSDgyba9TlMKUiJQgBEiEBpH/glmL/OK3V1EXmM8LcyMPcn+6uaNC1rldnUBTz6v8iJwgBEgEBGiAUI5LI/ltTsHHaucBuOplyW1db0iQsoB9WCMYFrmJkYQ==", "proof_height": {"revision_height": "48714", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"10000000000000000000","sender":"dym1w3ntrayq3czr2ldkcss232atg83ce5elacwm6a","receiver":"ody1w3ntrayq3czr2ldkcss232atg83ce5elvfaudr","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

1736590100000000000

4614

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

4614

48714

ON_ACK

success

adym

10000000000000000000

dym1w3ntrayq3czr2ldkcss232atg83ce5elacwm6a

ody1w3ntrayq3czr2ldkcss232atg83ce5elvfaudr

{"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 4615) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	7F531B444DEF8C1DF7C5B35A979BD20C497328B9F923028E3471507F604F0E68
to odysphere_654689-1
v
Acknowledgement	601AF63580361D9E6A215364131CEB2CD8B25CD6CBB1E7CEA12550D823E9304B

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "4615", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736590100000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "48714", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"5000000000000000000","sender":"dym16k0lht7zyvl09gg9ax94n4acls5h8gvkrwrsp3","receiver":"ody16k0lht7zyvl09gg9ax94n4acls5h8gvkjlshk0","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

1736590100000000000

4615

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

4615

48714

ON_ACK

success

adym

5000000000000000000

dym16k0lht7zyvl09gg9ax94n4acls5h8gvkrwrsp3

ody16k0lht7zyvl09gg9ax94n4acls5h8gvkjlshk0

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
0x4b856b8e5eefc0c4057187f8fd2ef5a8d39b7b56 0x4b856b8e5eefc0c4057187f8fd2ef5a8d39b7b56	DYM	9.98678872	0.98241148
0x93354845030274cd4bf1686abd60ab28ec52e1a7 0x93354845030274cd4bf1686abd60ab28ec52e1a7	DYM	78,772,028.379322916122611665	78,772,042.039808044844795565
0x989721a433ebd4f6e49dc1687a3316f28b6ba053 0x989721a433ebd4f6e49dc1687a3316f28b6ba053	DYM	950.18461504	950.1700385
0xcee039a8249db1ed8574e6fb19582bb066240a88 0xcee039a8249db1ed8574e6fb19582bb066240a88	DYM	1,033,031.789597146023430149	1,033,040.789597146023430149
0xdc6f17bbec824fff8f86587966b2047db6ab7367 0xdc6f17bbec824fff8f86587966b2047db6ab7367	DYM	0	0
0xf1829676db577682e944fc3493d451b67ff3e29f 0xf1829676db577682e944fc3493d451b67ff3e29f	DYM	0.00437708	0.01895378

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