Prelude No. 1

Recording by Heitor Villa-Lobos.

Recording identifiers

ISRC
US4R31237694
CopyrightID (CopyrightChains transaction hash)
0x2bb9dcdee2aea0e6ba4b055af09ebc9b5b2fee292f4c4f4e857f7c10fba1b9a8
Copyright registration time
2026-07-07T11:39:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:b8cb36a29a8db0611b0f34e00ac868f878c5bfd35d09518b5f4c39438c9ec433

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.