Cartas, Canções e Palavras

Recording by Sa & Guarabyra.

Recording identifiers

ISRC
BRBMG8700099
CopyrightID (CopyrightChains transaction hash)
0x132ecd8d280e9e1e8643c819d93a76b577e225ae1d29bb397fe346c9b95b5be0
Copyright registration time
2026-06-25T13:49:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:3a220fffccdcf021d968729d9899fd41d30f6204ac2da43baf50170aa250ff2a

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.