Valsinha
Recording by Chico Buarque.
Recording identifiers
- ISRC
- BRPGD7100040
- CopyrightID (CopyrightChains transaction hash)
- 0x84cfda24ea5f44de4406355151922d6d98d2a80226a70b40e87af1c6d01ed1ce
- Copyright registration time
- 2026-06-11T11:35:48+00:00
OpenTimestamps proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09Z
- Bitcoin block
- 953520
- Canonical record hash
- sha256:7fd87d2b90951d43e5f74542574e5bd2f124b3aadb9e0a8fc95b5c0cea1dba10
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.