ISRC CALC42021117
Verified recording
CALC42021117 is “24 Préludes, Op. 28, No. 17 in A-Flat Major - Allegretto” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x7085d8c686223755f974b57bd1196674712b0c895ce963bab94d00b5ded94be2 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42021117.
Recording identifiers
- ISRC
- CALC42021117
- Title
- 24 Préludes, Op. 28, No. 17 in A-Flat Major - Allegretto
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x7085d8c686223755f974b57bd1196674712b0c895ce963bab94d00b5ded94be2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:5fe5226ae78f14c39d78f75a32f4304f196e33553dfc56b57b6f32181adfcd00- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CALC42021117
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: 24 Préludes, Op. 28, No. 17 in A-Flat Major - Allegretto · Machine-readable JSON-LD