O Sim e o Não

Recording by Serginho Madureira.

Recording identifiers

ISRC
BR7SG1100009
CopyrightID (CopyrightChains transaction hash)
0x56671fb1fcd6ecc9515b03814a16d9d7b266fbd5007086c7056b4247ffdd5771
Copyright registration time
2026-07-30T03:42:11+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T04:47:22Z
Bitcoin block
960207
Canonical record hash
sha256:434f9c996c4ae08be461db453a859b5bb54e268d6fc0285f8c9e12535d4697bb

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.