El Sofá

Recording identifiers

ISRC

USSD11700405

CopyrightID (CopyrightChains transaction hash)

0x1c03e536ed5b24f5729f2d55fe43b1d428466d3db901fa2d21128d47de03037b

Copyright registration time

2026-06-08T10:19:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T15:41:10Z

Bitcoin block

953528

Canonical record hash

sha256:30e20c2741795c729cf277cd8b19f3dcf6ac15c16f784467ac4250b8be844361

• 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.