Cafe 1930

Recording by Astor Piazzolla.

Recording identifiers

ISRC
USSM19702283
CopyrightID (CopyrightChains transaction hash)
0x8179501924acaff8cd92e25da9833f0bb4306577f76e8399aa5a360883b36fc6
Copyright registration time
2026-06-25T04:03:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:2c49c70f5195f4e85573571121905d5d4baedc28bb11e9fcaec1cc6d92958100

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.