ISRC USASX0623517
Verified recording
USASX0623517 is “Duet No. 4 for 2 Flutes in F Major, Fk. 57 (arr. for flute and oboe): II. Lamentabile” by Wilhelm Friedemann Bach,
registered on the CopyrightChains blockchain with CopyrightID
0x52ca3ebb1d711c2db1f05b1328c158c5a9f6195a67ed7ad7bd4920955f138249 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/USASX0623517.
Recording identifiers
- ISRC
- USASX0623517
- Title
- Duet No. 4 for 2 Flutes in F Major, Fk. 57 (arr. for flute and oboe): II. Lamentabile
- Artist
- Wilhelm Friedemann Bach
- CopyrightID (CopyrightChains transaction hash)
0x52ca3ebb1d711c2db1f05b1328c158c5a9f6195a67ed7ad7bd4920955f138249
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:0ca6c06d8c22c928ae048277df00d6f4ebc07cc4a33359fa02a2549e2dc55d6f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0623517
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Duet No. 4 for 2 Flutes in F Major, Fk. 57 (arr. for flute and oboe): II. Lamentabile · Machine-readable JSON-LD