El Viejo

Recording by Calibre 50.

Recording identifiers

ISRC
USUM71216351
CopyrightID (CopyrightChains transaction hash)
0x33c5d00350c6bad06afeb1c1ceab4f5d7d9fa0ab86aba2ae70f614ee76385446
Copyright registration time
2026-06-01T22:39:34+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:812881d82b172ef9b142d5c4232d96512fe914d16cf69bd02836175f8cc0faf6

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.