I Bakvendtland

Recording by Alf Prøysen.

Recording identifiers

ISRC
NOFKF9307180
CopyrightID (CopyrightChains transaction hash)
0x609196109746823b391d9c903438c97b063ed453901ecd0c419431517971fe12
Copyright registration time
2026-06-21T14:05:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:bd58f4d4f4e9fac57c2872fe61ae9a8c3b2d33ef86c3875a1a4777df1639c5c4

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.