O Pinguim

Recording by Chico Buarque.

Recording identifiers

ISRC
BRSME1300790
CopyrightID (CopyrightChains transaction hash)
0xd93ba75b7250ed50144fe344926706731ee32ba62c85a4f80683762951702c90
Copyright registration time
2026-06-09T14:38:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:f9ff1b2c110fe3a3eb42a3fa9e9f7036299368744f92c1db9e59374258687ec6

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.