Prince Igor - Mariinsky Theatre Edition - Act 2: No. 13b Recitative and Song: "Natesilsja li Knaz'?"

Recording identifiers

ISRC

NLA509312225

Release date of the album this recording appears on

1995-01-01

CopyrightID (CopyrightChains transaction hash)

0xf055277909bb1fefcb5b0473e96c0f38b622b11ecf8f21131999de8e0325aeff

Copyright registration time

2026-07-31T07:30:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T08:26:41Z

Bitcoin block

960368

Canonical record hash

sha256:0d8044d1164adf9c3b4dc186ef0949c2e2c6bf9ee643a715cf8410232abc356d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA509312225

What this proof establishes

This recording was released in 1995, 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.