Doull is a surname that is sourced mainly to Scotland, England, and Ireland. Doull is a variant of the Gaelic name MacDomhnall which means 'son of Donald'. Variants included Donnell, Donaldson and Doo
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 0xf52e431274895fb3def1af0a34c422f152232ca469c09fec5479e471b0eb9799. 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/81898663-480a-4969-ac73-eda925b40b74.json and https://artists.proofprofile.net/proofs/artist/81898663-480a-4969-ac73-eda925b40b74.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 0x096e68b7033a0b5902926c9aac4f4e1126e775231eb450e90b41f8117d51dc23. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:15:01Z), 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/FR10S2586603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b080d2440c261b87e6ada9ccda1da51c71389bcb37622185f6c9d3aef34a50. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR10S2586604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfde5bac572f5237638ef23142bf94120b62ade825dbe26b2f4416941a85143e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:05:36Z), 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/FR10S2586605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d0c20fe6067d77f09c1765bae7dfccb4c85c7cd49f84f66060d4bb43a81c34. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJX2548300.