Um a Zero

Recording by Pixinguinha.

Recording identifiers

ISRC
GBAYC9902435
CopyrightID (CopyrightChains transaction hash)
0x0a2156b5ea7ef4c88464f774a1efa33d461a398dd00f4b0a98aad1aeebcf17bd
Copyright registration time
2026-07-06T18:07:47+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-14T18:13:17Z
Bitcoin block
958041
Canonical record hash
sha256:be6ceac88328b5d68fc57d5698517fa8a5c76df36a0af3f45cea0fd34e4c268a

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.