I 60-årslag

Recording by Oddvar Nygaards Kvartett.

Recording identifiers

ISRC
NOAGW1500587
CopyrightID (CopyrightChains transaction hash)
0x04a67c82115211d9741e9d083cdbacad5879691d4dfcc5034bce042ffe9caedf
Copyright registration time
2026-07-30T22:51:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T00:26:26Z
Bitcoin block
960327
Canonical record hash
sha256:9bc5e45b4fb101058b783d9ce08254cb4e35ea7176b02f60adf0e5b05ceebda7

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.