Onde quando como porquê cantamos pessoas vivas (2ª parte)

Recording by Quarteto 1111.

Recording identifiers

ISRC
PTVC17500048
CopyrightID (CopyrightChains transaction hash)
0x262a70df91b8a76e6efb3cd579d4a9e8bc153ab79567c2af06212d1942d2c788
Copyright registration time
2026-07-07T12:57:56+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:fe999281bdf5a4136e74d85f5975dc005f189b3c7468461802feca78b0162a10

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.