Crux fidelis

Recording by João IV of Portugal.

Recording identifiers

ISRC
HKI199490711
CopyrightID (CopyrightChains transaction hash)
0xcd11a2f8cf71bc886c2a78025a9af8dfe871fd8c156b9dc55acbef3cb0a85713
Copyright registration time
2026-06-05T17:17:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:1d40a087053f2cdc1510f87c46c37b95e4a58fa45370129d4aab7fae078e7808

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.