1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3d5ad20ea0c70dfb03fa08e4641c9589da071ab8779dbbd2730b09e5d16f596e. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c573313-43d4-4aad-a7e5-92dca8a6e7ff.json and https://artists.proofprofile.net/proofs/artist/4c573313-43d4-4aad-a7e5-92dca8a6e7ff.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 → block OTSBitcoinBlock must exist at that height 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 0x5c49f40e730baf6094803a71e78d38e125448b6eb090e21888cfac2dea18a49d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/INB311313129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bd814a333be0d8622b4c5ec6d6070ee836ddb524c48811117ab19bcc8c4127. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/INB311306519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd4dc7409218e852f4c1cbede6b5a9aec01952980507ccda1a08020f8ad5c9c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/INB311306520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fd63a0985fb2287c75ac832b0758c882ec9ee92b41af7a63ba07bef8e81b62. 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/INB311306521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd31f1a0b95a9b8ae91bbfd97cfef2a46078a78c78abdb4e1421d0905a29795. 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/INB311306522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa062596c2c9dd08784e6b69fd6e65d41903629e549f438c997224bb0a6104205. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:09:38Z), 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/INB311306523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa039e5c2c64334a636cfd6bd3e7fd9ea8b26f2ca9837f188f371310c1342614a. 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/INB311306806.