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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb5cb6760168a7cdbd969826cee9bddcd0f5e7ee73ca9a52cb34f7d6ff972cb. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c683a0bf-c67e-47cf-a0c7-a8707aae5e41.json and https://artists.proofprofile.net/proofs/artist/c683a0bf-c67e-47cf-a0c7-a8707aae5e41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Histoire du soldat Suite (The Soldier's Tale Suite): I. The Soldier's March
Stravinsky: Histoire Du Soldat Suite - Renard
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f65e9de608604390997a4b4a1d28a1cd4e3c14669a59cbff9a6b19aee88f29. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190620902.
Histoire du soldat Suite (The Soldier's Tale Suite): IV. The Royal March, "Pasadoble"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1257a6dd2c1ce1062edd178c2e98a701cef58c2af2dede9cf237783b7491db. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI190620905.
Histoire du soldat Suite (The Soldier's Tale Suite): V. Little March
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3241cf20ea44779d910989e1269c1bfadfb31c46a6c83d0c5b2189197f13ba. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190620906.
Histoire du soldat Suite (The Soldier's Tale Suite): VIII. Petit / Grand Chorale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda1c177d9ad6b928c6355a0493245ea6a27750883773e89503aea2aeb1fdc5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKI190620909.
Histoire du soldat Suite (The Soldier's Tale Suite): IX. Triumphal March of the Devil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2dec43a30520ef555c6372d2645064f0df76d103d277d5baa0046159d24687. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190620910.
Let the Bright Seraphim (From "Samson, HWV 57")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4672393041e159d375d99686954dc02d7974c9a173a76113f793c09a9b92b67f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSM19000446.
Eternal Source of Light Divine (From "Ode for the Birthday of Queen Anne, HWV 74")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ad20574da50fc052d5768848b9974a770ff69f31efe3e807daab815861784b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10013856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4672393041e159d375d99686954dc02d7974c9a173a76113f793c09a9b92b67f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM19000446.
7 Arie con Tromba Sola: No. 1, Si suoni la tromba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187ad685ebaf0667247af497ce8bf561249963f23534da77dd31308b3d015db9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10013844.
7 Arie con Tromba Sola: No. 4, Rompe sprezza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65fc9b1bc1bff868b6f62a02044a13213ca2f02856c93c5173c0a9ebb5c20a5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USSM10013846.
7 Arie con Tromba Sola: No. 3, Con voce festiva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793ef32373161fb1726a22f3dd3f5f4d9d0a1ba71d7cccf0cbe5ccf80ad3c0e5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USSM10013845.
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
7 Arie con Tromba Sola: No. 6. Mio tesoro per te moro (Aria in forma di Menuet alla Francese)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b5c80dd44dc23df8f6c4ea442998cd76bebeb354c7c31ff6a4d71bd16a606d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:27:23Z), 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/USSM10013847.
Su le sponde del Tebro - Cantata a voce sola con Violini e Tromba: 1. Sinfonia. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a61de5e2df1f633fd7a12575845483c40b9e7d69af546a3fb0c2c19022322ad. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:41:06Z), 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/USSM10013848.
Histoire du soldat Suite (The Soldier's Tale Suite): II. Music from Scene 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94c57499348b48779237eeed38fa976c3416f09745099248c9cce6876bae7f2. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/HKI190620903.
Histoire du soldat Suite (The Soldier's Tale Suite): III. Music from Scene 2, "Pastorale"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe348955d49b1b54a7f7efe5b9de06db36f8f695f5717577b3bc3bba82898bf52. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190620904.
Histoire du soldat Suite (The Soldier's Tale Suite): VI. 3 Dances: No. 1. Tango. No. 2. Waltz. No. 3. Ragtime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16731f96f2629c243833b8b58be8573aa8fb71729515dc136d79a9df827ece9. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/HKI190620907.
Histoire du soldat Suite (The Soldier's Tale Suite): VII. The Devil's Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8883fc8e102e06e12fc21af271a1ce7ede7cded273d8abe66a719b4e09fc29d. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/HKI190620908.