Klockan slår sju i Sofia

Recording by Staffan Hellstrand.

Recording identifiers

ISRC
SEBFO9210110
CopyrightID (CopyrightChains transaction hash)
0x656f36149ac86cb5e9bffde2d55e4d7c807207e9f60b71a083867dab335b1689
Copyright registration time
2026-06-26T13:15:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:18b55bf0f7b91994174d5f02b57e1193e75fc438531158bad7e852c25e9563b2

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.