Thomas Henderson Docherty (24 April 1928 – 31 December 2020), commonly known as "The Doc", was a Scottish football player and manager. Docherty played for several clubs, most notably Preston North
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1ce1d58de1b4ddc088e533d039789e3bc1871842b649b32637e92e3b236659. 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/0fe28adb-1de5-4c21-badb-a8fa26913537.json and https://artists.proofprofile.net/proofs/artist/0fe28adb-1de5-4c21-badb-a8fa26913537.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35995147a7510276d72e0da98d7185317310927a0a988f672e77ef9ab8ced864. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA72402643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bcb89a41ea6ca082a2cb32b01051ece46ca454e8e1e50eca26e8e01860fd4f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDA52414944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb838d0f75c790ab742c5fcbfaddf6fa4035b598a5c7716635a4ec0b7b33437. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:54Z), 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/QZTB92394288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246d14c214c2ae8edc33b6a4a48285811dd438d32cafe2029cca2ef3ea358cc5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAW2388384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d92e7cc417f62bb7ae89557df65cba64f99c719313588abe3d552ea5a1de3e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWQ2300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe450b895e6196dd654f9087ebde266643c7c8e5c9c85eeb4ef9a6edb633a33f1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWY2336052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac6ccec6fdb15e265a8a298acd55bc99c7616cd43e8f9712cc12da809b8d637. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51e977806614422fde14edf0106615610a52bff8f9d440cec84add0a348bb3c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4110736560c5d5cf515d0406bcffeba81f168de9260703135ef4b83c0295723a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d90c30e6fd7e4c705e465dbaaa7284113ada80e0d3323a661d34e84ba9ffa6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLUM72200637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8399522d2ec1ebfab12b24ad9291a1e16e17cfab59861a331ff03073ad99510. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLUM72200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1164503fa799cf1b5bdce95f32bb70cae7933c37d93725e2af629117fd658e1f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLUM72200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17735d2c2c42dd753bc5db44fdf9f1fb78fac140a94b9faf79957746981f09b8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd835909e0e90143f0df9ca9f0b0e5bee71202f4b19eae2da887f4a6eb036dbcb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200628.