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 0xabc1f1c16e27703cb6e97ffbab4b5b6283a6196b519b8517f8529a11d876cc08. 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/69a4951c-84d5-4f3a-b9a8-a0f77751112e.json and https://artists.proofprofile.net/proofs/artist/69a4951c-84d5-4f3a-b9a8-a0f77751112e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cyrodiil and Chill (Original Score) [Remix]
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 0x81eb84f3222239aa0f245ced6061cc456250d7c494fd79bfa4c7ef2cc30a47d9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAFK2100619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc2ace098df224d05089a8964d3c9dad2fd386577bc8847a005ec9b345165bb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAFK2100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b16568e7711df6a6647e2e0b633fac9e8a34ee40a0e82ff08742a21e40bbd9. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAFK2100660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bb25e8bd13838c0b93d2719772e081a58afd243d2107cfd6b6901226bcf4ea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFK2100671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78247d01d45ae61ba7903b0821c37257a8517e9028fd6551526335171e53d4cf. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/TCAFK2100682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4496d8dac2876476b63a8f708bbf0cce8736873519b8128efda069d839ef0d2. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TCAHI2327092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d20dc72806baf727b14061924a6e8557ccb969dec08d3ffd8c99cb4a5dbde16. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHI2327107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1d14708911390a057a560916e8e41ceb855c37086cf990745ca6e525391b36. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAHI2327113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e4757e91b6ecbd1fb5c41935c503085cd1011144718c1830e6d8f0fce460de. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHI2327116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c0e497b1332e74b028ff9f51a4ff95a41f15b48e31f8f4c1a7c26561757552. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAHI2327368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b8f4f2cedbe3b841aa17be20472458a0e8f34dc24036401722e0186d1d6222. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHI2327122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd949627e75ea7dcfb61f59ab3ff7134c2587b7ad9bb1754956215967c12f9f24. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHI2327126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575c295924fa23b80566567e4ba10a0e7199d39a951c6609ec735a55a951c782. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAHI2327131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f37d1fb9e1daea1a6983d4ff42a54e6f46c5e1419c86491be9d19a28e9b0d1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHI2327135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2bacb2260bbf92a16be7a340022b94066e83eb34be98505aebfd3a07f4be81. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCAHI2327139.