Birsortzen

Recording by Fermin Muguruza.

Recording identifiers

ISRC
QM7281879755
CopyrightID (CopyrightChains transaction hash)
0x8316d51421681e20409c6f684d2c6c68da19afa6273ca42bab4e424e83fb66fd
Copyright registration time
2026-06-20T06:23:30+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:e8a6631c758e909865a22cbca179771cf5e6a2bc9e4d8575e75e5d43f159eb34

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.