Jeremy Sparks (born May 31, 1977) is an American retired Rodeo Clown and Professional Rodeo Cowboy Association member, Cheyenne Frontier Days Rodeo Hall of Fame Bullfighter, and author of Go West - 10
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22494ec488bc94fbb9d3b1bc031d1fa780d9c6c15a795eb0fc241f277eadb675. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f93da818-c4ed-49c4-82a5-883941b543cb.json and https://artists.proofprofile.net/proofs/artist/f93da818-c4ed-49c4-82a5-883941b543cb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Best Of Los Angeles Guitar Quartet (The)
Rodeo - 4 Dance Episodes: IV. Hoe-Down (arr. for guitar quartet)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b406868b843e5140b0c1fdfe632bd4cb85b8dc8bd3c306854f6effe47883156. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660701 — a six-check JSON result.
Jumpin' at the Woodside (arr. for guitar quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17e36823a1299b1f08c25faf24601b679fb0798819159f9c8f620f2dcab0f18. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660702 — a six-check JSON result.
The Nutcracker Suite, Op. 71a: VIII. Waltz of the Flowers (arr. for guitar quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd623dd67d557f71c75bd9d9fab0a12ead0e596fc081ef7d5c2c7efc5bacd8c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660703 — a six-check JSON result.
El amor brujo (Love, the Magician): Danza del juego de amor (arr. for guitar quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ba0c8b5a7e771616f93b039ad961641e20241d63fc8cfe75dbed9ebe7c349a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660704 — a six-check JSON result.
The Black Horse Troop (arr. for guitar quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd478a6d05318c6d00fa95ad65f9d2e267c447a7535535533152d4bb7cec17c3c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660706 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f85b191f71266d409f37d1b0c1542016f3b78c0adda7e6603b2b85016b0925d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660709 — a six-check JSON result.
Appalachian Spring: Simple Gifts (arr. for guitar quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7d7d33213bcc45a27f14653204b4860842643cef55f9c1dcb909b289b3b4b3. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660710 — a six-check JSON result.
Guitar Quintet No. 4 in D Major, G. 448 (arr. J. Sparks): IV. Introduction -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d72a914926f0178bf6881b770f3dff9c236461dec94e634984e28c71c59785. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660712 — a six-check JSON result.
Guitar Quintet No. 4 in D Major, G. 448 (arr. J. Sparks): IV. Fandango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc365c4101ad2a04ffb31154487a5a95a4cf3f11802b5eb33a803b7749a88b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660713 — a six-check JSON result.
Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: III. Allegro (arr. for guitar quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf725152f0be842f8edad2a8e99e61f076ac029424137f597dfdd058eae78f05e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660718 — a six-check JSON result.
Baroque Hoedown (in the stlye of Vivaldi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57b03112b3eb7e19c760a8fed52ac4da11fe94aa5997ee44b4c8a92101f4454. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0660720 — a six-check JSON result.
Lute Partita in C Minor, BWV 997: II. Fugue (arr. for guitar quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005949065e159446c338c3910c3fb925ab7474f7eda25c420a9e53f905de0f90. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0625815 — a six-check JSON result.
Introducción y Fandango - Quinteto en Re Mayor, G.448
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe997905c74a9c9253a021aa838cd213a975a2056785bb9f8f59793ada70eab5c. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541769141 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe146ebeaf98d0d60d10cad6c9fe22099060f322dceeddac6d3bb2c0f29d68c14. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541769142 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e3c44d01d8be94ced50a251698baf09d7cf3fc739b2acda7672975e6421a13. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541769143 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd46f7a8eeb29f213e45248f2b24e4dee9e7cd36b560f8abb95852fed7dbc747. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541769144 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618e2eb9c09f8c204dd306f750038db0f92b49891d15484b35bebf11d19202c7. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541769147 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f4a81e8414a5adba0ac9a59de888af51a5ee89adc6f0e39e12babcc4f036cf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541769148 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892a5ba9e53b0aa0d627acfc108b563852316f3eb63179ee876211839d65278f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541769158 — a six-check JSON result.
Boccherini, L.: Guitar Quintet No. 4 / Falla, M.: El Amor Brujo / Rimsky-Korsakov, N.: Capriccio Espagnol (Evening in Granada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9051e4c3478d1271de57eb1859b0908071daeee7f33781c2b8fe533d72841c9c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0814401 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54696643c24d8fe58a6cafe3ca329bd544de8c0fe4903c4d96d9b40beded3744. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0814402 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a45bf174fc91471c032cc78bb2e9989402ffff0a86c6ce85852fd18b50e9fd9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0814403 — a six-check JSON result.
El amor brujo (Love, the Magician) (arr. W. Kanengiser, S. Tennant and I. Krouse): Cancion del amor dolido (arr. W. Kanengiser)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d92cd10e6bc1f58ec0c37ffa2d45695e559be8709ea54ace325f5520eed2d1f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0814406 — a six-check JSON result.
El amor brujo (Love, the Magician) (arr. W. Kanengiser, S. Tennant and I. Krouse): Cancion del fuego fatuo (arr. S. Tennant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650910f6b4e710130051b7446b5518639240b7d52ce14a6027de2a3460342712. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX0814413 — a six-check JSON result.
Guitar Quartet Arrangements - Byrd, W. / Praetorius, M. / Telemann, G.P. / Dowland, J. / Bull, J. (Gypsy's Round)
Colori e danze del Novecento (Musica per quattro chitarre)