sad song 77

Recording identifiers

ISRC

USA2P2045294

CopyrightID (CopyrightChains transaction hash)

0xb6ff498ab79196b70d33d8011903cc607f440f6357fff06e53c65c3b28e63c00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T21:51:49Z

Bitcoin block

960150

Canonical record hash

sha256:4625abe3e2b08184ec5da01e56f1b28cba7904a97f237b056d4014961830013f

• 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.