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 0x7f7db91a7e4da9f850099bfcf130f36211f5724613ed4cb67cb76ef7423728d6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b62baebf-d0c2-4b11-99a1-718c0124ff41.json and https://artists.proofprofile.net/proofs/artist/b62baebf-d0c2-4b11-99a1-718c0124ff41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x2919781d44a17c7fd90071ced6a7be09b783758e716d36fc01558daf58c0890a. 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/DESZ51400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17688e89e2e4714fd4c5290de1ad13d6984bf6208834f18f992d73145f4d77e8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:53Z), 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/DESZ51400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581fcf903c7d22bf0ad178a844611def5701bf71e09b39cf90aa80c168676601. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DESZ51400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7085628742cb0efcbf8f5e7e9d6eca99e81cf5ba62091359e5c360a16d84b17b. 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/DESZ51400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309b89bce399b8f80e5ef291cd26c88b7028a6d0b29062ab294194a0c1c3ccc4. 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/DESZ51400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ef73cc0e8a6f2bf784387d37844c2a23831554d0efcb45bcab6396b5adae5c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DESZ51500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6e36f47ba5cfab03328492c1d4e18d97ecff87541cac17250d2ed964cee088. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZDA42528314.