外白渡桥上的男子

Recording identifiers

ISRC

QZHN72336534

CopyrightID (CopyrightChains transaction hash)

0x644b72ea2bdbbc0b520c1b3ccd44903c57c7eb58e0ff0340abf4181450d44319

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T17:29:52Z

Bitcoin block

960441

Canonical record hash

sha256:c91ae71f19dd167cd5fd2e33af56133dafbc5fd79d6f8ae5acc805269640c837

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

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.