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 0xdc506f12542b1cc1fa1cd6736dd58d36f369cd649517b68d825207048ea15ee2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/190045c7-d5db-402b-8647-422169cd63bd.json and https://artists.proofprofile.net/proofs/artist/190045c7-d5db-402b-8647-422169cd63bd.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 0xec6192dd215670ccd79919a9e4ed7f37061306d2169e09f40cf48542e7983339. 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/DEUM71602443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f01c108e8917db2dbe76202ec4a23c7f57c2e625b5909a5ad0db8b13ef04559. 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/DEUM71604953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8315e2dec8042dd9ffbd9f724259eb3ceb195135278ca123b33c80770591de. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:33Z), 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/DEUM71602440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6192dd215670ccd79919a9e4ed7f37061306d2169e09f40cf48542e7983339. 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/DEUM71602443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f66c35a7dd5128f120e8a3025d9960b47763668eddcd9bfe9529ebce14af15d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEUM71800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a065a2cfde0d8e8e45f84baba4b2cc53c4b71a8ee7c6700a5d0414bfc255c1f. 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/DEBL61800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a065a2cfde0d8e8e45f84baba4b2cc53c4b71a8ee7c6700a5d0414bfc255c1f. 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/DEBL61800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59858544a5f9cf059cfaf22ecfb6b49d325a4c85777c654bec5bfee541812389. 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/DEBL61800766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f4a4210bd1bf6b434481009f53c17fad2f2ed7bf06de4e8ebe36085c0f907e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR96X2098185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2230203bd471729491766fbcc3a1ccfb643832883dfa9c974671be5264847c28. 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/FRS182050423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8da865a94c7481239aefd429bf80958e8d33678c69e97c25c0efea23e9113af. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR10S2384710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f3c5fec7ce8519743bf5acca3830c55bf79f14d52a56e7a086ccba57def005. 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/DGA0P2382134.