Morro Dois Irmãos

Recording by Chico Buarque.

Recording identifiers

ISRC
BRBMG8900043
CopyrightID (CopyrightChains transaction hash)
0xbcc5d3fdc6f5b43f93e6d0c0e2c5c25763518b59471afa914594e77b15507435
Copyright registration time
2026-06-23T07:45:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:944ba0942510099a5ac3106e8aa26613d9e6b2e8383f76a70e3ad79303c6bd0c

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.