Cavaquinho

Recording identifiers

ISRC

DEB338020308

Release date of the album this recording appears on

1981-10-26

CopyrightID (CopyrightChains transaction hash)

0xb90483a2038971048b26eb377212636d568f5b29723e5168396ece303b516998

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T15:42:38Z

Bitcoin block

960273

Canonical record hash

sha256:46b5ba2b08d873d66ca6217f0345d5dbb079319e6c7727441467588ffe95b3e7

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEB338020308

What this proof establishes

This recording was released in 1981, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.