Første Gang

Recording by Halvdan Sivertsen.

Recording identifiers

ISRC
NOFGG4092040
CopyrightID (CopyrightChains transaction hash)
0xcfcd0d60e27a28cfe81159f6aa263a8ca0cb2437ecff62ca78f74c80dd018421
Copyright registration time
2026-07-30T23:13:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T00:26:26Z
Bitcoin block
960327
Canonical record hash
sha256:5d91a2cc74a6a7a51a6a480cb0e162a3982184d54ca216810db4b4183e4a143d

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.