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 0xb5b1831b892c791c460778be689de7b14e02ce57c38bbef51e4f0c4603731cda. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2212109-575c-4bc3-8445-ac34e40dd62e.json and https://artists.proofprofile.net/proofs/artist/b2212109-575c-4bc3-8445-ac34e40dd62e.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 0x227c6345b7cb6761b6ab08505b833cbbac4fc84f5544733ec20662ab9c86df8a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:12:00Z), 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/USHM82010814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98240b9b3ca2b85055dbdcded375fe3ca10cf8811f8efe1543152aa155ba0db5. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:03:34Z), 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/USHM92217958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165799d7c89d03146f9e88ba19bf2efb682760a44e45d75b170ce2469aa67a90. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USHM92217959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25435754243cba0c434198e65e6f23732bff2359dc090afccb4cadb6fea0e2f1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:20Z), 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/USHM92217960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dce89a7ba43dcdc6613c43b9748fdd6aef278fab7b7cfcc656c10e2f1520f8. 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/USHM92217961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8ecd6756e84f714392aacccc38b25db3bd98fc87a415c9dee37881718cbdaf. 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/USHM92217962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c17d58fa10de2528552abeaebf5772fed0d82a1df0ecf34641e641fa3784f6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:51:31Z), 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/USHM92217963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3478ad80d718948195f31a40607a340b34defc91a579b8cccfe93c19c7446644. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM92217965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c66c7c4724bc2bec7bd46bb588be83814ad6381fd16808b230bb3b7bec5e4ab. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM92217966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31e1942edb8ee73a280e999d663a7b1c991b470e3a09f3f2356643d3b4be422. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNJZ2354368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9405ff271a79f2ad6aab6c7978fef6581ad2b4d9c31fae6da5fc233a43840d89. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:33Z), 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/QZNJZ2354370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4ef42fb8228b217a9e0a65d4ffc2afcab75184d3457fc546518798533b2446. 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/QZNJZ2354371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cf22f2b5a7727d211a6bbbfbbe235fd0adeae12c2ad12892920b523494ce7b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNJZ2354372.