O fondo do Mar

Recording by Alfonso X El Sabio.

Recording identifiers

ISRC
ESA082050621
CopyrightID (CopyrightChains transaction hash)
0xc1c9e30f85b5c1a0aa8c5df8e4ebba1aeb14e171546e1e0e33fbc09801799cf3
Copyright registration time
2026-07-07T21:09:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:b87e58e582958292187c9135d445a948ebb7114c278117df06049731ea810786

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.