La Primera Amistad

Recording identifiers

ISRC

ES5020200116

Release date of the album this recording appears on

1966

CopyrightID (CopyrightChains transaction hash)

0x20505d7cf0554427f931fa8c82c1bc96cd1e9f92d0ea3c5db5cdcfe056c63939

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T16:33:26Z

Bitcoin block

960435

Canonical record hash

sha256:f80523bd4014fd330b3447e8dce90210280674826bab302bd7b54c08eb0f76c8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC ES5020200116

What this proof establishes

This recording was released in 1966, 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.