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 0x44d31dd23a1caefe28641de41ffd4cce8dcb0facdbbef2687fde7061b9442cec. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e7000f1-98cb-45e6-bd45-3a403713761a.json and https://artists.proofprofile.net/proofs/artist/7e7000f1-98cb-45e6-bd45-3a403713761a.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 0x10142ee4a82a0fafacd7f5eebaa72f3d4625d2d8f48f51b45845dd61a499acf7. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX282194097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38019a2f507547dfff89cc491e8440e795506098c87cae1511476e9ccf1e8fd. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:20Z), 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/FRX452108232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101a89d1db61b55cfc9d63eb65a2844f9fa28fc8d5d4437383eb42e79f5ce548. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/FRX282185357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206b579a24bc9b206b5f7be3ddb42f397bff1f09eafb4cee7c2278bf870fd810. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:07Z), 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/FRX452108380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972c7565f4c5581814daa85521f1789fdf453d22f38505c10f026219bb036797. 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/FRX762192271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681382e3d13d72e28dca90085f281d58b0d006bfc087268359bb15c99334aa59. 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/FRS182147889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815f3b377cab2194d5be21718432b3d6f1fbf10f37a4c22f8eb87a5626543145. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:23Z), 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/FRS182141941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e91b73a6c38f261d95bc7d0040d9de5fa0bae19a9ba73d6b2021da38494a929. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:50:23Z), 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/FRS182142569.