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 0x7fc5b19e1dfeef51bd6a78ca0d1e2a317b7b0c9bb90f0f6c83b5c3119fb19b38. 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/96f0098a-cbc4-4384-a89b-6846a0cbe581.json and https://artists.proofprofile.net/proofs/artist/96f0098a-cbc4-4384-a89b-6846a0cbe581.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 0x398c5ee5e297c65779d84abee092091375a94bc3970b9d1db49d5cfa972cffd3. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/GBRKQ2175126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f6e959b18457a213905c01f5463c937a53ff271b9ad68369a97dd5d9afb20e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ZZA0G2201285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6087ca878ab2ee393056254302366902a73596e3acac3ee7ab7120fc4caa331f. 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/ZZA0G2201247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad7cc501138bd4bb63318e7a32e8aa8824c88caf54a7a6a37931ff496e329e5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTRX2125873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7016cffac77b633442dc2d822c9e6fb443370d97e470eba49c481aa95b1bfce. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:00Z), 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/GBWUL2130183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2ad978baa5a77de675caa96219827651238d7f2d51a4b5e69c3df7294d4d09. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:50:07Z), 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/GBRKQ2175531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2536cf41a2bf0ccc7933e3214558bd2069309369f2d1fa0b22267427b657b5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ZZA0G2201290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eca097806ca0b3cb028e2f7662e45a6233c1cf06c2b9a5ca0a43c2e5e5a777b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZZA0G2201294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409984dfcaf7b51a5bcb3173b1d2e6dd43aa2aa928958e09a20cef6305d6efa6. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:42:28Z), 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/ZZA0G2301447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73193a38d15cb1f943ebd6b10b04ba4d2494cd0d31c54ec2a695eccc41ad8324. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:48Z), 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/QZNJY2329546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed7468a78e60c8a6ff9887d1b1b80a2bb92da11924aef31d37e0439b0828b1c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ZZA0G2303878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2139357123be785036455737ba4e6896e9b8c0175d7601c66e61c4cd492ea1d1. 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/ZZA0G2401918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d056ae7d2b21b620e629e05242b14d7aaf06d34ce9cb4a28dac076e789d3d6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ZZA0G2402952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96309fcf253dea2815339f0bc56942479de731c6c0f4507e11748a443b370b6d. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/IND832403009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e640765b257342c28c7bc54eb62fb91ca66bdc511853f890817d0b003d43f67. 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/ING212484283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6039c9a81845b93af7012a2115eb89452a8326d48a8b48dbd32a25cc515c289a. 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/ING212484285.