thumb|Jaime Laredo in 2014 Jaime Laredo (born June 7, 1941, in Cochabamba, Bolivia) is an American violinist, violist, conductor, and music educator of Bolivian heritage. Laredo burst upon the interna
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 0xe45f830d45e845b28331ee6d43d1c4eae839d3ba9b0e5ae5ed5fc8baaceb2128. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de667578-cd10-4696-8572-320fbfed0880.json and https://artists.proofprofile.net/proofs/artist/de667578-cd10-4696-8572-320fbfed0880.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bruch: Violin Concerto in G Minor, Op. 26 - Mozart: Violin Concerto No. 3 in G Major, K. 216
Mendelssohn: Violin Concerto in E Minor, Op. 64 - Bach: Violin Concerto in A Minor, BWV 1041
Mendelssohn: Octet in E-Flat for Strings - Mozart: Concertone for 2 Violins and Orchestra (Remastered)
Violin Recital: Laredo, Jaime - Kreisler, F. / Faure, G. / Massenet, J. / Dvorak, A. / Sarasate, P. (Virtuoso - A Treasury of Favorite Violin Encores)
8 Humoresques, Op. 101, B. 187: No. 7. Poco lento e grazioso in G-Flat Major (arr. G. Saenger)
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 0x1a4e068b48288beb3ee89e2696ec59bfa0d21320966ef9c649fe07e1b6931e94. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60710913.
Harbison: Viola Concerto/Laderman: Concerto for Double Orchestra
Kirchner, Copland & Ives: Music for Violin & Piano
Handel/halvorsen: Passacaglia In G Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890beb298d8bb7ed74a53af169237b03936cc18f02a478b17ccc598a713a04e6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO10701074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5361a11dcf74b61b1c17d44b852abcbae43cb12e88abeb74b517ad186f4aea6. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO10701077.
Ott: Conversations: Chat At The Fireplace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6c4e08dc2f4636d9dbe6629e0b74c561652b4a03b87bc12a7bd204deab65e7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO10701079.
Gliere: Duets For Violin And Cello: Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e87643a5512f1e8846b3155bf3fe888d5e3af5ffb69aa36c420f2a363acb87. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO10701081.
Gliere: Duets For Violin And Cello: Gavotte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42183e9cfd9a70371558945fa02fbc65c97313dad051e944bbe43302adbd0272. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO10701082.
Gliere: Duets For Violin And Cello: Cradle Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fbbe0b162eb1159db105206faf6df4f9404e705d7076708015aa1b540d5858. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO10701083.
Gliere: Duets For Violin And Cello: Scherzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74791c72b0e807300ee35fc5e173e5dbd590b3a64d3651b0aac482fbfb07c46f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKO10701084.
Jaime Laredo: Mozart & Bruch... Violin Concertos
Vivaldi: The Four Seasons & Baroque Favourites
Violin Concerto No. 1 in E Major, Op. 8 RV 269 “Spring”: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00fbc841c6991476a9e26ee2bee3eff718d582d65886d31da49138395fbec6b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761938301.
Violin Concerto No. 2 in G Minor, Op. 8 RV 315 “Summer”: I. Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116cfd74422f68d1340b7cdaf934b65a04e89f1374ef7ec4e9ec9516563427ce. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761938304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2370f016e3e37d438f289e3b3cdb50796b15081956277233bc7749baf53d289. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761938313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81321f92541089c5fea459981f2bffdb2d290f3c87683a74b5477f027c2a650. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761938317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfac61569ba6b9bc84625c783fab7be74bb44abc9cda67b901669f1e5e6f38b4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1075128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdd616fb5e1d370eb1b866da625d8515340513bca6369c14d21a73b0fe836fb. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1075127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca68bc2adc200bcf0f6564cbf4ade2cda508b1fb3ea004e353644bc79ff997a8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1075129.