Yesterday

Recording by Judy Collins.

Recording identifiers

ISRC
US54W0700079
CopyrightID (CopyrightChains transaction hash)
0x0e57e72dbbdb8b78e3a7a97d87a1dacbca90be3eb8a210329f57747a423fd0ee
Copyright registration time
2026-07-07T17:43:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T08:56:20Z
Bitcoin block
957145
Canonical record hash
sha256:981c8759bc9ccbcdbed5beed2bd4bde21bcc22460c40336224a352db67240672

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.