John Sheppard may refer to: Law and politics John Calhoun Sheppard (1850–1931), American politician, Governor of South Carolina John Levi Sheppard (1852–1902), American lawyer, judge, and legislato
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 0x391f75f0abeee3eadc4b566cdc5ce054e72149f29ebcbc15a01fd3656fefbba5. 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/03f7066d-013a-4a2d-8a99-e4a8fcdd8c13.json and https://artists.proofprofile.net/proofs/artist/03f7066d-013a-4a2d-8a99-e4a8fcdd8c13.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 0x2e28fe336e2cbd3db7d7945fc1f5873c2feda78766a39058e8fb0aadd331d42c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBAJY0548301.
Praise the Lord, O My Soul: Semi-Chorus. O Pray for the Peace of Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccac3a90f63018d5b2f80064041df8eaeea71e95579bf88470206ac2f3c1a23. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBAJY0548307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf5ed96b50d62c94102f11866c9c8f5cfb467824fba028683e65ef00eaa4d93. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY0548309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838229a3f037133c1ae70d5cd187832386c0f1386059c2996b3809fbe8944c4a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY0548310.
Psalm 12: Help, Lord, for Good and Godly men
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cccddb49614c5e32a7efaeaa5a091535117994de5227f8822eab6374db4b14f. 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/GBF071404220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7a86afbe75fac6680877b7dfc5563e19cc9f8183a9e74d55d715a7d2cfe2f7. 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/GBF071404210.
Music for Compline: Tallis, Byrd, Sheppard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb74d57f0c312b8d4f2be2589488c40579f518630f5d6e41db1198b08b2ef678. 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/USHM10641901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487b681269d8154afdcc60341be050e5edc789db06a97293fcf675e8c207f2b6. 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/USHM10641904.
Jesu, salvator saeculi, verbum: Jesu, salvator saeculi, verbum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e83ec6a5a6451330773d9081d17922e0daa6cd1c53afb08e4a861a62532f10. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM10641906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf003846f813f3a09e4d4033dbe43f884f1ee4588810d3b0c3c7c9cd435e5565. 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/USHM10641907.
In manus tuas II & III: In manus tuas II & III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d20af0d38157d2d9a90d132f49674f53a698f94f1fba30017c267ca85c057c9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM10641908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719eec1e69bc07d37bd3a2647b99cfd02d1cd52be15d32a496e578577c59fa02. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM11257910.