Songfest: No. 3 A Julia de Burgos

Recording by Leonard Bernstein.

Recording identifiers

ISRC
DEN961701600
CopyrightID (CopyrightChains transaction hash)
0xc96a99e28428d9f737b7c65e6e201c7cf2d0e222fe839fb58457e60f354f654e
Copyright registration time
2026-07-07T14:13:07+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:cce6fe15a93453c51ceb5bfb70d25e78840e41ca004195e423dd9e1dfb0708ce

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.