Troika

Recording by Sergei Prokofiev.

Recording identifiers

ISRC
GBGCS0500643
CopyrightID (CopyrightChains transaction hash)
0x508685c32096d06a31b2d84c5dedc02bc25982979d244c1c674ee33d4a25e049
Copyright registration time
2026-06-24T13:04:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:6b9a671bb691d37140ec29462a42073849b7c1b592e46863a6f2bf9a90c594df

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.