Blumbus Testnet Transaction Hash (Txhash) Details

This is Testnet block explorer of Blumbus Testnet

Transaction Details

Overview State

Transaction Hash: 48ECFE4D1A32C2A2CD448D8501B3374A501B8FC6CE4C80F5387AED21AB115959

Status:

Success

Block:

5648958 16,127 Blocks Confirmations

Time:

1 days ago (2025-01-12 16:41:51 UTC)

Action:

Value:

0 DYM (0 USD)

You are viewing a Testnet transaction

DYM price:

0 USD / DYM

Gas limit & Usage by Txn:

748,150 | 463,872 (62%)

Fee:

0.014963 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": "83235", "block_id": {"hash": "Vof8q6bk4qmA3n0N9ti3CkA+ZWBSLOQlVzhlaJ9oMJc=", "part_set_header": {"hash": "Vof8q6bk4qmA3n0N9ti3CkA+ZWBSLOQlVzhlaJ9oMJc=", "total": 1}}, "signatures": [{"signature": "u2V7I19kst93hod+jHdV7XC9x5456YEfdfBGcd0Mq6HRwnap4H+AVcnMMf5gC0DQCwpTwCEuJPk7sI8NMG2YBQ==", "timestamp": "2025-01-12T16:41:53.264205624Z", "block_id_flag": "BLOCK_ID_FLAG_COMMIT", "validator_address": "xl/CEWwkhP/r105V8i1sk/9mauQ="}]}, "header": {"time": "2025-01-12T16:41:53.264172191Z", "height": "83235", "version": {"app": "0", "block": "11"}, "app_hash": "Zhrw3SVn98dYLsjJbWVszpREgbWze7HhOa+i9AJaV5c=", "chain_id": "odysphere_654689-1", "data_hash": "ATiRqKKitx3rjgeB00ht3nA1fPZhk3dni1UKe+WQYRk=", "evidence_hash": "Tlm/JzcrEwS8CxN9G+nVZq1YsVS2prV3ivf0FLHUuEw=", "last_block_id": {"hash": "eQiSGHaTc3wW9ozaSzErub2KFeNhBLGXVqbaZ7eEz8o=", "part_set_header": {"hash": "eQiSGHaTc3wW9ozaSzErub2KFeNhBLGXVqbaZ7eEz8o=", "total": 1}}, "consensus_hash": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=", "validators_hash": "T0B3v7NyM4SUK8QZ+H/2sJdgJk4UHXDWlcQ4kNZ43us=", "last_commit_hash": "xFVI+aZHGKgUxq0ArZgyVj5NIq53Uo8occui/3DSmqg=", "proposer_address": "xl/CEWwkhP/r105V8i1sk/9mauQ=", "last_results_hash": "zmx+84SuorjX2o/nukaNKEbLQzU3OT+k0WZUsHVwShc=", "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": "83226", "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

1-83235

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

ibc_client

0.0

IBC Acknowledgement (seq_no 9131) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	51FB1377926E1BB6AA9A462FCB180D127F1CD6129C075A63836D25F5A1A3BA3D
to odysphere_654689-1
v
Acknowledgement	48ECFE4D1A32C2A2CD448D8501B3374A501B8FC6CE4C80F5387AED21AB115959

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "9131", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736700600000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "83235", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"480000000000000000","sender":"dym1zef06w4atq7rflgxf22ghgxa3yjek340k94jk9","receiver":"ody1zef06w4atq7rflgxf22ghgxa3yjek34085x4pm","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

1736700600000000000

9131

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

9131

83235

ON_ACK

success

adym

480000000000000000

dym1zef06w4atq7rflgxf22ghgxa3yjek340k94jk9

ody1zef06w4atq7rflgxf22ghgxa3yjek34085x4pm

{"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 9130) ibc.core.channel.v1.MsgAcknowledgement

👉 Explain here

Transfer	888C3B197460DF06F723324CB9727C293FF625D480D9DE2BBFAA63D8FA1D365B
to odysphere_654689-1
v
Acknowledgement	48ECFE4D1A32C2A2CD448D8501B3374A501B8FC6CE4C80F5387AED21AB115959

{"@type": "/ibc.core.channel.v1.MsgAcknowledgement", "packet": {"data": "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", "sequence": "9130", "source_port": "transfer", "source_channel": "channel-54", "timeout_height": {"revision_height": "1", "revision_number": "9999"}, "destination_port": "transfer", "timeout_timestamp": "1736700600000000000", "destination_channel": "channel-0"}, "signer": "dym1nztjrfpna020deyac9585vck729khgznek4pvc", "proof_acked": "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", "proof_height": {"revision_height": "83235", "revision_number": "1"}, "acknowledgement": "eyJyZXN1bHQiOiJBUT09In0="}

{"denom":"adym","amount":"4000000000000000000","sender":"dym1k5tf92uknjzf5uy54qx64phtmn96h0x20g8fnj","receiver":"ody1k5tf92uknjzf5uy54qx64phtmn96h0x27e5wyv","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

1736700600000000000

9130

transfer

channel-54

transfer

channel-0

ORDER_UNORDERED

connection-66

ibc_channel

odysphere_654689-1

PENDING

transfer

channel-54

transfer

channel-0

9130

83235

ON_ACK

success

adym

4000000000000000000

dym1k5tf92uknjzf5uy54qx64phtmn96h0x20g8fnj

ody1k5tf92uknjzf5uy54qx64phtmn96h0x27e5wyv

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	79,045,717.601488760388351071	79,045,731.261061336362402717
0x989721a433ebd4f6e49dc1687a3316f28b6ba053 0x989721a433ebd4f6e49dc1687a3316f28b6ba053	DYM	900.66186364	900.64690064
0xb2608b81341d3089944478062a4174a7f51429af 0xb2608b81341d3089944478062a4174a7f51429af	DYM	10.0	2.99536602
0xcee039a8249db1ed8574e6fb19582bb066240a88 0xcee039a8249db1ed8574e6fb19582bb066240a88	DYM	1,061,976.143797743473561746	1,061,983.143797743473561746
0xdc6f17bbec824fff8f86587966b2047db6ab7367 0xdc6f17bbec824fff8f86587966b2047db6ab7367	DYM	0	0
0xf1829676db577682e944fc3493d451b67ff3e29f 0xf1829676db577682e944fc3493d451b67ff3e29f	DYM	0	0.01959698

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