Morro Dois Irmãos

Recording by Quarteto Em Cy.

Recording identifiers

ISRC
BRCID9100009
CopyrightID (CopyrightChains transaction hash)
0xdd257702c761b67c8166a1912c9b20807aad8e06eb2834227b2913d8bbedec7a
Copyright registration time
2026-07-06T09:17:30+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T14:18:56Z
Bitcoin block
957048
Canonical record hash
sha256:468c17d2c305e588a72e3b4ba0802be24538c83363e9fcf0e33888bb84ccd839

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.