練習

Recording identifiers

ISRC

HKD450200002

Release date of the album this recording appears on

2024-07-05

CopyrightID (CopyrightChains transaction hash)

0xc89c491c5138b9168cf28fbb6470ff354bc35d2dcc69e1381901aa166def81a3

Copyright registration time

2026-06-04T07:32:43+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T11:43:09Z

Bitcoin block

957032

Canonical record hash

sha256:6d13a1c85691a8c822fe1329ab07ffd7b4c45e2968f756da6b32458cf3c16e22

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKD450200002

What this proof establishes

This recording was released in 2024. ProofProfile's artist catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and this recording entered the record through cc-db-prod's ISRC-linked registration. Its provenance rests on the dates stated above rather than on the era of that source corpus.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.