Madrid

Recording by Nat King Cole.

Recording identifiers

ISRC
USCA29101224
CopyrightID (CopyrightChains transaction hash)
0x1536884326b41862addf90e14e68216fc60374f8bb1a70f1dc5c724c1abdfdbe
Copyright registration time
2026-06-22T16:23:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:3ce3a2ea03d9ac95d9b4ff401ad71a10ae8c0bd3792b7358be4c6d8bf8e537ca

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.