George Hart may refer to: George Hart (cricketer) (1902–1987), English cricketer George Hart (Egyptologist) (1945–2021), British Egyptologist George Hart (physicist) (fl. late 20th century), Americ
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 0x86a6ce4d411d87524d2b891aa4d5de0d5e2881911298bab958842a4f8042284a. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c24a415-0742-4fb0-a802-50ad411a6372.json and https://artists.proofprofile.net/proofs/artist/0c24a415-0742-4fb0-a802-50ad411a6372.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 0x071d758168f2f4cbe58a422f8cfc346ae7bb8d68f57c25b7c95741bc0f35df8a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US23A1554506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6fbf2066f72903f30199dd9a47220394f595db586eb7ee76fca66b5e675e6a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/US23A1554683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc875d865e2c3f9f3767a530f2ffd9c586c68187627585423703eec8bdf7acf. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US23A1554685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779fbaad45044c4e9bc1a5dc269f6c774944c0f3f2681fe9ff6e1ca29308e53. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US23A1554686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67966f697c93ad5d33e13f2adec945783eb9ea04d00d00c8180abc60cce081f1. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/US23A1551184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb36d9de35d5cd159257ce072e9dc7ea071c85a5322a44bc90bb93cf4e2d3b0. 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/US23A1551299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fde6318776d6bd67858e7900d1eb5f1d7e63f36edb70c67a5d854dca866c7c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US23A1551439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1324e5adfae3c9f07cb1958d5f7c4947698c89e3fbdb15355385c92b75ae83d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US23A1551803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c1eb8c39bd92a655950d196ac1288b106767b7377b8770aaee8b57c1db95f3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US23A1554508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe5a495b87c61c669c55d24ff2b6b9c8c30efcc34f052dce760c27144bb5f4d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US23A1554509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886628be5c45b060b8a4fe7b61314c7764ba583d88598e85d7837351adeba9cd. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/US23A1546660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45229f3cd2a3e40bc43538dbbca70c6f9cd3bf07832e698152e4b278e164f29c. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/US23A1546661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59034f6ac56714c3eed5e35ef319665999fafea984e9540620c7f3ece844526d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US23A1546662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee588a3e89310d6d57501662af672098d3d9c486996242da66c573fb3c9ed624. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US23A1548620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7048efa02df037ab70ba9ed2591ae2108c6d3821ee937e0d3f5edff4e80f9a71. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US23A1561920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6fbf2066f72903f30199dd9a47220394f595db586eb7ee76fca66b5e675e6a. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/US23A1554683.