John or Johnny Cunningham may refer to: Military John Cunningham (officer) (fl. 1689), Anglo-Irish soldier at the Siege of Derry John Cunningham, 15th Earl of Glencairn (1749–1796), Scottish nobleman
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 0x6230d35f6cba13b7f222d85e26c40b4e1794bffd0dee05f07ef67a7832c51f43. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a0b2504-1d3a-4e2d-a0cc-cfa026aa29e4.json and https://artists.proofprofile.net/proofs/artist/6a0b2504-1d3a-4e2d-a0cc-cfa026aa29e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
John Cunningham 1998-2002 Homeless House/ Happy-Go-Unlucky
Company - Original Broadway Cast: Have I Got a Girl for You
Company (Original Broadway Cast Recording)
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 0xe66226b230f86131df3e9eb45686fe36cbf28f32ecc873abf1c7522092f735c5. 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/USSM10112734.
The Launching: There She Is / Loading Inventory / The Largest Moving Object
Original Broadway Cast of Titanic: The Musical
Titanic: The Musical (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8b6df7414b4cc7e217e5b3ed22757c630bbe3c09237e5c234c962cf963fed6. 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/USBC19704553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b085fee33b4ad501eda23b78e33a27e69f4b37d85c876fda013a8ef7d69b176. 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/USBC19704564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43586bcf7c9947b98a226809c9e2632e25891a224297e19fd94d543a5b3be28. 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/USBC19704567.