Marcas

Recording by Leif Bessa.

Recording identifiers

ISRC
BR4W12300009
CopyrightID (CopyrightChains transaction hash)
0xd5af1fec2d794bc5f249be4332acbb549d51b95cf6b4573db9420c30a353f38f
Copyright registration time
2026-07-30T15:13:17+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T15:42:38Z
Bitcoin block
960273
Canonical record hash
sha256:5d0b3b7fe33f841fdb39a18d0280a665e2c6b4bc966582db19ce609942d9fb19

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.