ISRC NLK4J2000011
Verified recording
NLK4J2000011 is “Concerto for 2 Pianos / III. Quattro variazioni: Var. 2” by Igor Stravinsky,
registered on the CopyrightChains blockchain with CopyrightID
0x00c055a620874b7aff2f2bee748b015823e12f6dc1b32cebbdd1cf26da9ccfa3 and independently timestamped
in Bitcoin block 957124 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK4J2000011.
Recording identifiers
- ISRC
- NLK4J2000011
- Title
- Concerto for 2 Pianos / III. Quattro variazioni: Var. 2
- Artist
- Igor Stravinsky
- CopyrightID (CopyrightChains transaction hash)
0x00c055a620874b7aff2f2bee748b015823e12f6dc1b32cebbdd1cf26da9ccfa3
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:53:27+00:00
- Bitcoin block
- 957124
- Canonical record hash
sha256:71018a30f6a68e8195183448839c777ad1c2772b1af86a47d9de1655e83c4a92- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLK4J2000011
- Bitcoin block existence check
- https://blockstream.info/api/block/957124
Full record
Track page: Concerto for 2 Pianos / III. Quattro variazioni: Var. 2 · Machine-readable JSON-LD