Ad Calendae

Recording by Guilherme de Sá.

Recording identifiers

ISRC
BR9462100009
CopyrightID (CopyrightChains transaction hash)
0x7d300f622361c3597f3f736cb4fdaf3b7467aa20c305ad7643446627a98d4487
Copyright registration time
2026-06-22T11:42:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:c02c5aec2bd480769ed821012b7df84e2a6cfc1ca2b12c0b30111634519a30a6

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.