Dois Filhos

Recording identifiers

ISRC

QZNJX2000182

Release date of the album this recording appears on

2020-11-22

CopyrightID (CopyrightChains transaction hash)

0x8b2c44e59437d784bdb4f01e03c92acfa29e0829e8eb74c6ab4bb68f9583ca8e

Copyright registration time

2026-07-29T15:14:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T15:38:18Z

Bitcoin block

960125

Canonical record hash

sha256:760b2a303e4da51720739aa1a7349c12dab6dcb3635118908a686a3854ba9280

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC QZNJX2000182

What this proof establishes

This recording was released in 2020, 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.