Marcha 2

Recording identifiers

ISRC

BCZSF2100003

Release date of the album this recording appears on

2021-11-12

CopyrightID (CopyrightChains transaction hash)

0xd1d99f8e92ac7d97d0d297a8002cc62c295f9e79bf892e27d83e69cc137093f0

Copyright registration time

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

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:d9a7f13c5800e5668c995d4f4ce9cfa53b1ba8918c5961403d28efa2d40b35f5

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC BCZSF2100003

What this proof establishes

This recording was released in 2021, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.