ISRC HKI190719807
Verified recording
HKI190719807 is “Knickerbocker Holiday: September Song” by Kurt Weill,
registered on the CopyrightChains blockchain with CopyrightID
0x63560d8ace8d7f7443dce76bf444075869386a034e0bdcaa66f86398b24a8628 and independently timestamped
in Bitcoin block 960478 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190719807.
Recording identifiers
- ISRC
- HKI190719807
- Title
- Knickerbocker Holiday: September Song
- Artist
- Kurt Weill
- CopyrightID (CopyrightChains transaction hash)
0x63560d8ace8d7f7443dce76bf444075869386a034e0bdcaa66f86398b24a8628
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T23:30:38+00:00
- Bitcoin block
- 960478
- Canonical record hash
sha256:89d0df375406026f43d43c3dc4029be3bcc1acb5d154a40d8b6f5b6599f6d27a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190719807
- Bitcoin block existence check
- https://blockstream.info/api/block/960478
Full record
Track page: Knickerbocker Holiday: September Song · Machine-readable JSON-LD