Zwei in einem Boot

Recording by Peter Maffay.

Recording identifiers

ISRC
DEA619360040
CopyrightID (CopyrightChains transaction hash)
0xf9557f3c407c7917e0579c9dc46ff32d4bcb48f3ba5b713376b76d170b3f5ca4
Copyright registration time
2026-06-19T12:15:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:3f84dcbeeeee47bc1e67769e713266e2ab39267da99819875943ecd29d9ba1fd

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.