ISRC ITP901100007
Verified recording
ITP901100007 is “West Side Story - Arr. for two pianos and percussions by Irwin Kostal: Cha Cha” by Leonard Bernstein,
registered on the CopyrightChains blockchain with CopyrightID
0x4083bd81e37f99008f0d41ebbd6041c37fe79fe7979d47ef57b9746b855a486c and independently timestamped
in Bitcoin block 960348 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITP901100007.
Recording identifiers
- ISRC
- ITP901100007
- Title
- West Side Story - Arr. for two pianos and percussions by Irwin Kostal: Cha Cha
- Artist
- Leonard Bernstein
- CopyrightID (CopyrightChains transaction hash)
0x4083bd81e37f99008f0d41ebbd6041c37fe79fe7979d47ef57b9746b855a486c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T05:17:02+00:00
- Bitcoin block
- 960348
- Canonical record hash
sha256:e50954a153ea796e684693cc519e3c8f2b4748243dac837bfb6466e2eba10f3b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITP901100007
- Bitcoin block existence check
- https://blockstream.info/api/block/960348
Full record
Track page: West Side Story - Arr. for two pianos and percussions by Irwin Kostal: Cha Cha · Machine-readable JSON-LD