Sommerfuggel I Vinterland

Recording by Halvdan Sivertsen.

Recording identifiers

ISRC
NOBBZ0501090
CopyrightID (CopyrightChains transaction hash)
0x2e612a077160f2eff09a18291aedd13d2f00a74d57f8235271be2e5e63af84f1
Copyright registration time
2026-06-26T01:52:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:9834cdb9365db8cfd0cbca5733438dabb31ef7c626244cf43e4d44329a4fe0a8

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.