Onde quando como porquê cantamos pessoas vivas (1ª parte)

Recording by Quarteto 1111.

Recording identifiers

ISRC
PTVC17500047
CopyrightID (CopyrightChains transaction hash)
0x041a4c53f02d6e8fe8606d6fed9e129076985a6d7682af89df1dd981eda8d2e0
Copyright registration time
2026-07-06T22:03:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:00f21ff53d6f321f4a7612032c90c326a03e9f6d9cf0327abf5e1835dacf40ce

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.