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 0x1ca922911905d61676011cb5ac7e540a73932e1dd14a2706ffb51bb930d75839. 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/b4e0ebef-d18f-4ff9-b83f-b25d5851c4d8.json and https://artists.proofprofile.net/proofs/artist/b4e0ebef-d18f-4ff9-b83f-b25d5851c4d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Twisted (Original StarKid Cast Recording)
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 0xff157b409d1b93d9cdb06f7bebbc6ecd23e1e3c7db0eaa3b322c4a8f93b84e1e. 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/TCABS1301614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf09101895ccb1a1edbdd6fdb70ac0c547b8143d5e9497f004b1a785fd12575b. 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/TCABS1301615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb580277c97997121553d7b1a1e42cd6ce62b5e4a1e2d2d3f151a3ffc58c80a8a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCABS1301616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2a1a452559e52b3c5a780c030da51d76194ba3e502fe9834807525e87d338f. 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/TCABS1301617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c5c4d442762b0aafaea544a5e9944067ec3375f8c07b2e8759cb2ff2e030a0. 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/TCABS1301618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bb29374dad5fd0b00e9f5530d2d7481f896a229bbb6fcc19a6966a8654a344. 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/TCABS1301620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21edb65fb00e9790cdf5968059b5ca5997616448e88bde73191f05a5704dee48. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCABS1301624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b317e3b104161510314f85fffda1fa01bcea42e05a5dcf069560e67add57f9. 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/TCABS1301627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc71e819d4da01ada38b1c38a9fbc1ce806a4f9c35113bea58be43e9a86d15b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCABS1301628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078288e4a8a34d68e1f771efcb149a708a4e36ed8918724cb8c415fd35b7c0dc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABS1301637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6a2d27bac4f42cef33aa169ea7d7932c267ec04f812f3dc2089e27a2c1f69e. 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/TCABS1301638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcb0d0227a655109d2fe56b76c894e84b28d65701d9cd6a4a58346bdf5a3a6f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCABS1301639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7a1708830096df47a8b31e0ad31fa9f069c2ad28912defc75bbf7627139bb4. 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/TCABS1301640.
Finale (A Thousand and One Nights Reprise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c116d049f38f4a7bc0964031bd8d4e621e7687f2119c2a71d2129f8619088e. 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/TCABS1301642.