Olá, Então Como Vais?

Recording by Paulo de Carvalho.

Recording identifiers

ISRC
PTUM19900100
CopyrightID (CopyrightChains transaction hash)
0x99c60a94053c7ef17219d02e40617fefbda65ac210614afe9391bc3542aa3bca
Copyright registration time
2026-06-18T03:02:26+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:c9355cf924205a9a83522e73f0326c5beb541f096a599e73ef961ea016bf8946

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.