Prince Igor (Knyaz Igor), Act II: Merknet svet dnevnoy (Daylight fades)

Recording identifiers

ISRC

DET901537810

Release date of the album this recording appears on

2015-10-02

CopyrightID (CopyrightChains transaction hash)

0x89900426a8bde8de1a6c98aad384adc9a86fd8818d255b4bed59e8c98afca4ac

Copyright registration time

2026-07-30T09:21:14+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T09:57:33Z

Bitcoin block

960240

Canonical record hash

sha256:a876e69799da3bb81cab4ae381cc16a11185df129cedcd9b1d729f372c47c6a5

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DET901537810

What this proof establishes

This recording was released in 2015, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.