Sommerfuggel I Vinterland

Recording by Halvdan Sivertsen.

Recording identifiers

ISRC
NOGNA5807010
CopyrightID (CopyrightChains transaction hash)
0xd570d0675373f8347e7ec91709edf9d3be75a56f4f339688eff8bc00587e0b49
Copyright registration time
2026-07-31T14:12:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T15:20:15Z
Bitcoin block
960418
Canonical record hash
sha256:8090d5368ef4e035191be94db6caa25f550941ed5288d0a849e4eb525a340aa9

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.