Opa + Opa

Recording by Fettes Brot.

Recording identifiers

ISRC
DEAH91900008
CopyrightID (CopyrightChains transaction hash)
0xf4ae9a9cb92690760815a6e11c8e8a838ed7b406dfdf015554a9a4b55ee94a07
Copyright registration time
2026-06-18T05:13:23+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:90abe27f335c7e3592ce1c44fc3cac07b88ab797235a8bc7bde3c5a936088b5a

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.