Yesterday

Recording by Vince Guaraldi.

Recording identifiers

ISRC
USWB10402457
CopyrightID (CopyrightChains transaction hash)
0x901c288e301cb947be37adfccdbec5c84668a4f574250562fbd049762b432171
Copyright registration time
2026-06-20T06:23:34+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T08:56:20Z
Bitcoin block
957145
Canonical record hash
sha256:f4427e7bda800ae92ebccbe1b9198d127cc4e2ea4702c3f8772a0f0f29fc7f5b

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.