Dueto - Ao Vivo

Recording by Chico Buarque.

Recording identifiers

ISRC
BRPUI1800355
CopyrightID (CopyrightChains transaction hash)
0x218abed74bca78ca68f89e3a30db585ad4b2110f2a4b650e1f9a848e1ad1b05f
Copyright registration time
2026-06-18T17:12:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:2e386ffa710e665db6a4d15317764a8cce5fd7af82b6e01becbee5fe6057b882

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.