No. 4, Lento. Meditativo

Recording by Astor Piazzolla.

Recording identifiers

ISRC
HKI192102208
CopyrightID (CopyrightChains transaction hash)
0xc99ee2e276c9a5e409f97192257934c08483cbf7422a779a10f36d2515847231
Copyright registration time
2026-07-06T21:25:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:9d17da9d0fff722d4b5aebc8025b1ae521f0ef69b81c91115d5d258823919f77

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.