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 0x1e32e9228976b5ae1de0f6ad70bfc00aaac491083fffeaf4f7f64d7508647c64. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/634e71e2-b2e2-4152-831e-2ff6fbb70b00.json and https://artists.proofprofile.net/proofs/artist/634e71e2-b2e2-4152-831e-2ff6fbb70b00.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 0xd224aa42bce6f4a31e2fa45b737ad8a89604c1f64ddd969bdc1f0400dfbc36a5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:00:52Z), 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/GBSMU9774897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5ecf30f49e079869e00efde210d6a973a7cf86de8ec14baad4cd49a49bf89b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBSMU9774898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575a6bf571c22405482e10ec04e5471b2ffef110b9704dd56561ebb2971a15b2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBSMU9774899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf3a360d241274bc8bf49c97aaf8cc8711316f67c4c45e3003ffe33c03005d9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:34Z), 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/GBSMU9774900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a7dcd579044bf8aea52107bd05f425c800eb462726aa42aceb50ceb1b6ad26. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:48Z), 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/GBSMU9774901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503cc900d733ceac797b750a531243d616f5c2a3dcff89bd78fde4d8480684dd. 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/GBSMU9774902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75a9d169dc2f47c0cefdf38c8f9311cb3d9c8a17fda5a245faf19ad42a49482. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBSMU9774903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081767bcfa5ea1663c2c89a31275810d45fd601033ce5b57ffc974bbb4bc5020. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:54:25Z), 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/GBSMU9774905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816d971f0abc888bceabde3259adcd805fc2ddf0e55e292c0ce1062da29417d2. 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/GX5MX2367528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea28a7c848976791674933127530cd40bf0fcdf3e2893e9a36a012c274ee689. 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/GX5MX2396414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d5360aac7a9a35672c85000d8c1b14772755122d05d49240663169a35ebb5b. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GX5MX2341819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2576517a9b33a3be7ae4ca0eff5d4b80ebe106a83a190e1a1352a326541150. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GX5MX2385934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba949b06f3ef1a94cde5707385dad935ec44fde0ffc1660efd7ac51edfd70af9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GX5MX2384061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fcc2c463f288019a7b01d4e78f82ac2be880e9b3dd5d964e67ab2a43430c4f. 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/GX5MX2347747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d555d72f88bd7e5ddd188cfd05cd793a84aca5f1ee80b833cab9b96e4f4303. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/GX5MX2364405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47de6f065baab81ba3587bacb5cf85b33ad69d418cafceaa844817a41385e697. 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/GX5MX2307430.