Marcha 2

Recording identifiers

ISRC

BCZSF2100003

CopyrightID (CopyrightChains transaction hash)

0xd1d99f8e92ac7d97d0d297a8002cc62c295f9e79bf892e27d83e69cc137093f0

Copyright registration time

2026-06-22T02:01:14+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T11:38:34Z

Bitcoin block

956351

Canonical record hash

sha256:d9a7f13c5800e5668c995d4f4ce9cfa53b1ba8918c5961403d28efa2d40b35f5

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.