Mark Pritchard may refer to: Mark Pritchard (footballer) (born 1985), Welsh footballer Mark Pritchard (musician), British electronic music producer Mark Pritchard (politician) (born 1966), British
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 0x6219f8461506144d3155f214d895c36be90ed7dc711b97ae7b981d3345b2308a. 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/d0210481-4177-4672-9e2c-76e51414e68f.json and https://artists.proofprofile.net/proofs/artist/d0210481-4177-4672-9e2c-76e51414e68f.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 0x78b412f7fe8a4a19179cf3bc1613a888c8c763f413cba9995a7323321cf43237. 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/GBBPW2401029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7530590c80ed76df5ce87b9a4ef78485dfa1582438810790fa69c8bcc3441b5. 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/GBBPW2401025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7530590c80ed76df5ce87b9a4ef78485dfa1582438810790fa69c8bcc3441b5. 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/GBBPW2401025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7901c9ed2403050e3037352aa81e6dfc6144194719c1e7551cf7cd6f33972d35. 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/GBARL0300487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf683b75ced422674f3c5d6d6c08e9a9795ce993a2b6759854667e01d3fc2943e. 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/GBAAN0300475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf683b75ced422674f3c5d6d6c08e9a9795ce993a2b6759854667e01d3fc2943e. 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/GBAAN0300475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bb7d03c7fe7427494f9ce0918ac5f32d1331b442628447a7f428cef04eb4a8. 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/GB4YG1900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c4449e76a8e9682b8323e90cfc55d78336633d20bd2a89c781cf5762967794. 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/DEP960700005.
Ancestors (Dreamtime) - Mark Pritchard Rmx
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5757feec8e624905e7fd422db9eee2023a3c621e6b6db750cf3ea1bbb6ac7ef. 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/GBBPW1000183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4460509442409f8c7146adcac57d8d0e9c464e4bded26165bd4a6a9daaaca19. 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/GBBPW1500240.
3/4 Heart [Original by Balil – Black Dog Productions]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9827d592ba4e66fb2069ee5b6288412917d3e9857c869e5882213087e363610. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBBPW0900141.
The Orb - History Of The Future (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b40196c2cdfd25feb97c8a030d35e8e970f13b2d6f6b16f8b857396bdc8aee4. 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/GBAAN0000241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdd6ba44b6b71b93f1a830f992c35e12699e90a2aa7642ed0ad5c8a68fb4c82. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBU4B1100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947435ce114d21467bbb34f9c19b64e11a22108904403b1fb1f3e818a36b2461. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEG932300833.