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 0x96e113a4c6cb1b674220ad05996b342c2cd60e46fe634e1e007c002ad8a849f5. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d190a541-11c1-426c-97cb-7e63319faae1.json and https://artists.proofprofile.net/proofs/artist/d190a541-11c1-426c-97cb-7e63319faae1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Massage Baroque Music for Lovers Heartbeat
Concerto for Oboe No. 2 in D Minor, Op. 9: II. Adagio
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 0xf157a5cf51894d71c21cb4a9e98523a54a65bb7a165db5a2e68492781c58e6c0. 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/ES7141500255.
Concerto for Two Violins in D Minor, BWV 1043: II. Largo, ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92385e1eae08aad7773e21008e21094fca2ce001cb2f9a5f4a7546b9af116a0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500256.
Concerto for Flautino in D Major, RV 444: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608dcd2ec29013be6d95a47a38038b78e63e1f450c409585efc700f4afedb6c4. 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/ES7141500257.
Concerto for Violoncello in D Minor: III. Amoroso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dab41f7c67baa149fb7322abb52c1156ae573ea96e02c799de15ebb4b16329. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500258.
Trio for Violin, Lute and Continuo in C Major, RV 82: II. Larghetto lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b4f0c2dd68c260f76b682953a8c558b5d81d19e65e56d2da0db537af08ca79. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ES7141500259.
Concerto Grosso No. 8 in C Minor, Op. 6, HWV 326: V. Siciliana. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8dc068ff8d283eeb49593ad571c09fd97637e287819ad9b068cfb212b601ea. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ES7141500260.
La Giuditta, parte II: Aria "Cara, non paventar"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d37c5dd544a4f29b2998d394b9b22b435f99fd39b15ecd4cfaedc668b3ba9f. 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/ES7141500261.
Concerto for Violin in G Minor, BWV 1056: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2ae5935d6ae4019d5974d2328ebe941671bfcb3fefe376744168a84d8b406a. 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/ES7141500262.
Concerto for Harp No. 6 in B-Flat Major, Op. 4: II. Larghetto-Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ab86db3b3e6c1239c7fb883538e00b81253dd2351379331bd4c17bbedfa9cf. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES7141500263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0fff02ca301c2a96db320356b058c886e27c9e91496446960976c024f2e846. 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/ES7141500264.
Concerto for Mandolin in C Major, RV 425: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c9b21ef354afa757add5b8dc0d334180a5ce5a592e80a922453c5d7b3cb615. 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/ES7141500265.
Orlando Furioso, Act I, Scene 11: Aria "Sol da te. Mio dolce amore"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cbcb64ee16eb1435fba60ab80050f09d543c9f0c396dbe9db4e717b4f935e7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES7141500267.
Concerto Grosso No. 10 in D Minor, Op. 6, HWV 328: II. Air (Lentement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25634783a8887a3de2c8a80d984c283d659677cb50bc2f626c5e04388f1415f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES7141500268.
Sonata for Violoncello in B-Flat Major, RV 46: I. Preludio (Largo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55deec68feb3009a4d0a1352869942d028695dbd12ea949de636f7a998a9cedc. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ES7141500269.
Concerto for Oboe d'Amore in A Major, Seibel 228: II. Affettuoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3d314ecd5b0bc01980040e74b1045a6f34c2a4187082dc2f3710d67b90ec4d. 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/ES7141500270.
Prélude, Fugue et Variation, Op. 18: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7cbe600f03c000ccad1be078dd4eee406d7ad3c772a5a756e5f3cc4b08ae7c. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ES7141500271.