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 0x994f3c2775dc777908a80c960302adcd244641a74b027fbb15fa7f38b4c33c75. 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/4b6fed90-2de1-480c-a497-282fb39db4fb.json and https://artists.proofprofile.net/proofs/artist/4b6fed90-2de1-480c-a497-282fb39db4fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5e856f1e4a05a19e97aa9235aeea87e53c4dc483588b8546c2eae76602e0ff8e. 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/SE6XW2278834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ae6491f7a230c0d8783187516b02be2eee49fe35f2b5f1029fa5dfb74a64eb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE62M2216429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55212113196a298c572c7bb0fe22e23027d053df21a194b7997e2734e2623268. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:46:40Z), 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/SE6QE2369815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9505e8e4ac5b069981539c0b1ea8ec686cc1ce624c8fddc5f9813a433afbc99. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6TI2353468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dd52f00e9ae63517d108572f50d36a475251e7d95a0f0cda0c658f436ebba9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE6TI2383824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a0d4076dd14367480f81b4c5f40990a065e86b4bddc3271847b1ed4474bbd0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6A92307222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6cb179ad25c79cd177b9492d6df5e96f1c8bcdedb321c6e498136668ab7a83. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SE5BU2453509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19cec44cf20d3e1fe21a123624be3d6e38da8e35e13d340ffeb8eef51343f0f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:57:31Z), 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/SE5752473697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601abf52a880b50642680ed8ecee9026d6a89aadeacaad126dd49a618ed6dd56. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE6HN2439750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c865817a8b17eaf9069b1d80431993476c9d6e8b69f35670122c1155c811235. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SE6SA2406966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06219231fab6c717aa4b994a1805de78e027f79cef4a21432649fb4c6949b324. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6SA2433788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a96afabca4d4d6268ba3a288a959a1e4341025e9cc84e33cd5c51b4e76cea1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE6XW2420002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aba403c795e913f4bc22395ce554fa3d2c1cbec006a0371594d731f84dc976c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE6XW2429643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cb3e3af1505a0a071344750c48e58971844e1f30a845fc0e4cd102128c7434. 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/SE5BU2581795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479d676f2199bd24d500bf1d7d238ff7c8c5722aba774e3491824e6beb7f55f0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SE6XX2553032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d154b81514ef232969d6755492f76af283254465cda6c8f51b795ce1aab9b4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:34Z), 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/SE6XW2538567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc0aae11f8be6c707f3c536ab5578c34f6f62661c538fce321e5b9a503e889c. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/SE6XW2591335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea774c1bf43d3cf8a273bcc59e575ff5c7d4bb26ff4b4b3782ad513f5dec071. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE6XW2593699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12b3d55d24f0278146989bb5093108164842ce6ef1f89ff7082cc42bf5a61ed. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6SA2532465.