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 0xc43cfbf9a2c8426e3e5a0a43be840d3694af6fc135221ab8c675318d40943445. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d07cc0e-660b-4b26-bbf0-ff6535a324b1.json and https://artists.proofprofile.net/proofs/artist/6d07cc0e-660b-4b26-bbf0-ff6535a324b1.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 0xabb50ff839382620901a11f8a55ee550edca6380ffce5a7dddf3534908c39ea8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2318822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997439fc08b6a4218bcbac98628853053102925f2cb06844c0ac7548a3a62837. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLFP2318823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7046ea1438996de704c0e20938df015be8308f4008b2cfceae35007ea8aab19d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GBLFP2318825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508d54adc8b04d49d8badbe481056149cbef0c4e7b160b587bffbae7bf63cc7a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:19:31Z), 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/GBLFP2318826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb093579968c60e3a0526a80db0af2ea2823545d0ceeb4affb4fcab0da00dd9ff. 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/GBLFP2318827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7002604f31ea05f0dcb422f444bf5effcea240a0832863bcef43c4e747cf92. 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/GBLFP2318831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac3970db489c952f915b7a4e518209166f4d676b0e5b7848cb6c60232cf3abd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:16Z), 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/GBLFP2318849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5d69f7ea992057230540c3f138de0d0b5d9983a46ca3a8325bbb247d8db68d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:55:34Z), 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/GBLFP2318850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b5b37e0de74485bf63630dae9b4e854ab5df586de2ee3d049c4afb8359808c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBLFP2318851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52e4dccfb7cf7bd399918f6ff9a8d0ede3f32760d486a665aa760345cdaa083. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:34:42Z), 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/GBLFP2318853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50807d4f2a151358f027166dc33586ff3ff055a7103d5ee25e27ec230931775. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:40:05Z), 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/GBLFP2318854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c0797599b22940531817dcda4710c21ae17659a71e74ef32e51dbb0386fc32. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBLFP2318855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bb7e90900ae8e1b7c7adb77c8eadb804584c44653754f920b068655175b2fa. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:50:42Z), 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/GBLFP2318856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf093fecc4bbb46aaf46a6dff13c960c785ef0ba0eb1ab1aa08215752a3c9d0ca. 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/GBLFP2318857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4e0967b0bffa829ece431ad0642eb47fa60e8577ed7b5fb2391ff6ca5bb736. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:34:14Z), 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/GBLFP2318867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e75f0364869e4d40c104340797ff0674194edb3daf8587635504b20bd903ae4. 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/GBLFP2318869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078e1704e81c689ec791996fa63ffa1cab0869e7703bf4d16b226804c719bedc. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBLFP2318870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a1148ddb17e9ee0282c3a93c746af161d6d1ad2246e522dc303899f9fb6d0f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBLFP2318874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281869548ee4ff7b47f5f860933e5f3c362392604d939e4b7afa2a3f867c4c82. 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/GBLFP2318837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc81fb3c26773de5820437f06c5f6ce3e5b7cd8d9cb3879c57ffd11c35d516a7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBLFP2318839.