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 0x9008ff6a55f853b12b8a4b37ab952ac5ece887966a4996133ab813df979ea761. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cee13243-f9e1-40e8-872b-deee3dfc4046.json and https://artists.proofprofile.net/proofs/artist/cee13243-f9e1-40e8-872b-deee3dfc4046.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jim Macleod & His Band Play Selected Scottish Country Dances
Jim Macleod's Hogmanay Party (Live from Dunblane Hydro)
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 0x5f05352f310833c25199662c77f91b337e962fc6cfe5d3fcf1e94d5563e6708b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:21:26Z), 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/GBBEX9300972.
Jim Macleod & His Band with Pipers of Her Majesty's Scots Guards
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc173bd33c6a164a241bc2aa894b8a472879c00ff554b87ce0c64c863c972adb3. 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/GB89R0610004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea133b5d5d4ea168b60bf53bf23907f6b3089dbced651cda83e90a0eaeb4ce. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:56Z), 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/GB89R0610006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5de160a1d2470305ac81d323ba0b053b6c31777dfc5c0e65eb23f3ad105bdc1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GB89R0610012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d9dae00ee2ae069fe70e1f56d5d047887e00e623385bd8c0b64bd1e67f4d0e. 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/GB89R0610018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01dc47bf5a169378a1ccad4222c21bd117ffdfea602cb452ae8e5b557046445. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GB89R0610021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd128ea00cd70398aa6a6059bdf264e41343c7fe66cc9b813738607c082bb8db4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:41Z), 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/GB89R0610022.