O Concavo E O Convexo

Recording by Danilo Caymmi.

Recording identifiers

ISRC
BREMI9700074
CopyrightID (CopyrightChains transaction hash)
0xd644de6ca49515d42c0f1954b56e6f7957f93bb95e1d417bf549d473cb3605b5
Copyright registration time
2026-06-18T03:11:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:dd197cd5a57b0aeed53f5859e64ddd19c778c78ede18eb6767910ceec2a4b37a

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.