20 let

Recording by Honza Nedved.

Recording identifiers

ISRC
CZUM70700675
CopyrightID (CopyrightChains transaction hash)
0xc15fd7e5760e4e25023ca9619f1d1c7b64709dd3fa44b6f0d20bb225230c057b
Copyright registration time
2026-06-25T03:24:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:918b4c7aec6772912d8e30d21da0b4df77c5a10661ead0aa6d8306f4dcdc333a

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.