Yesterday

Recording by Dave Koz.

Recording identifiers

ISRC
TCAEZ2084897
CopyrightID (CopyrightChains transaction hash)
0x58cc88ada1920d8be453955a47084e2621479c7b1967fd52dc962cdc307d09d2
Copyright registration time
2026-06-10T16:51:00+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T08:56:20Z
Bitcoin block
957145
Canonical record hash
sha256:83657f0b54609a1ecf7e1b2d441664a5e9b142aa779813e4abfcab1db3bb4198

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.