ISRC CALC42514917
Verified recording
CALC42514917 is “Waltzes, Op. 64: No. 1 in D-Flat Major. Molto vivace” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x8b0405a001bd60c2c2939654948335919d003adde1b4db60b219a578a4310ead and independently timestamped
in Bitcoin block 960410 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42514917.
Recording identifiers
- ISRC
- CALC42514917
- Title
- Waltzes, Op. 64: No. 1 in D-Flat Major. Molto vivace
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x8b0405a001bd60c2c2939654948335919d003adde1b4db60b219a578a4310ead
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T13:50:38+00:00
- Bitcoin block
- 960410
- Canonical record hash
sha256:d5677f462b218b9ba26c3c98be4c8714af0cd91bf06ba982ed6f7ad03b8e5d3b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42514917
- Bitcoin block existence check
- https://blockstream.info/api/block/960410
Full record
Track page: Waltzes, Op. 64: No. 1 in D-Flat Major. Molto vivace · Machine-readable JSON-LD