ISRC FRZ209503904
Verified recording
FRZ209503904 is “Piano Sonata No. 2 "Concord, Mass., 1840-60": IV. Thoreau” by Charles Ives,
registered on the CopyrightChains blockchain with CopyrightID
0x43dda96d6016d2dd0df7f45b42757d8abc83a08150a5bc5d02456250ef0f2fb7 and independently timestamped
in Bitcoin block 957120 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ209503904.
Recording identifiers
- ISRC
- FRZ209503904
- Title
- Piano Sonata No. 2 "Concord, Mass., 1840-60": IV. Thoreau
- Artist
- Charles Ives
- CopyrightID (CopyrightChains transaction hash)
0x43dda96d6016d2dd0df7f45b42757d8abc83a08150a5bc5d02456250ef0f2fb7
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:22:41+00:00
- Bitcoin block
- 957120
- Canonical record hash
sha256:a57ea1846d1690b6e2de6d643739610307aa6071111d099a8cef0a9bc1be7a18- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ209503904
- Bitcoin block existence check
- https://blockstream.info/api/block/957120
Full record
Track page: Piano Sonata No. 2 "Concord, Mass., 1840-60": IV. Thoreau · Machine-readable JSON-LD