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 0x8027922e4c9061689050a2a7d762647b825f445aec4a0aa3a4ecc619eac4c50a. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9de925d6-6de6-4d5b-b4a1-0cd092d8f952.json and https://artists.proofprofile.net/proofs/artist/9de925d6-6de6-4d5b-b4a1-0cd092d8f952.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Keurspel:- Daar Kom Die Alabama / Boegoe Berg Se Dam / Januarie, Februarie
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 0xc2d5fe20007712e7ac6ae0bbcdcef8bea39538f0f96e1645bc0d3328ecdd2688. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ZAC039501490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9812394a5c5372bbc7eec9e83e8eca4276354ff6c00cf0fc9200317c243792c9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZAC039501491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb43d8f57ffd51bbc958793b31eb1dd9459fc89c84778c542e78d4c8ce2bfef3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ZAC039501493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618edf6bdf9df377066196ec1df8adde5c78ff069b89110d2193a4928e4e199d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:08:39Z), 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/ZAC031911295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce37c01206b57146e4c78b36c3b2f72c5f1fec4a618daa319b5a96b61c7b3269. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZAC031911311.