Carta para un Amigo

Recording by El Turco Oliva.

Recording identifiers

ISRC
ARG991022083
CopyrightID (CopyrightChains transaction hash)
0x2e381df4c8e2c8e073122857e3c656abc50bb29d8a441b6915631bc5197237ae
Copyright registration time
2026-07-07T04:31:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d6ce61629ad1f5df86c5d0c5f4e435e882f7fe527560fbe0afcfd61dbf5b179f

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.