John Ward may refer to: Academia John Ward (academic) (1679–1758), English Gresham Professor of Rhetoric John Ward (geologist) (1837–1906), British palaeontologist and icthycologist John Clive Ward
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 0x5964a5ba8888ac2ca168e0dab6beb6e2853dbe08f00686c562e8861ab6be636e. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a56c5ffe-8e88-46cc-b2ca-eef90c84735e.json and https://artists.proofprofile.net/proofs/artist/a56c5ffe-8e88-46cc-b2ca-eef90c84735e.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 0xc0f2ab45b480a8240dba2ed02916e2c733fdaf1a5142749159d9290c2d2aefaa. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:27Z), 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/CAENV2078470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f550f33c8f021c42f2bb428bce91a039492874d2b6ef1de55a796590c33091. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAENV2141993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc408b32e9e96395c3c7ddc0e15e130b9b3d0d8f806ac2b7a4e65204db3b26f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:43Z), 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/CAGOO2345008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24e575cf942adbf15b2210930d6a018a686b173a3eafc664c652821fbd7c38d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:38:10Z), 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/CALVP2419804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78df9ed0ba2f76ef0d0810c8f63d6edf7b2a5e760746ee40672dc31c6b7aa55b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CACWV2525401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea3710d207b0d7345102f163d04eb7756f6faf1596626d6e37f2c7d48b5b71. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CBEYJ2525320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f550f33c8f021c42f2bb428bce91a039492874d2b6ef1de55a796590c33091. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAENV2141993.