JPD may refer to: People John Dwyer (musician), American musician Police departments Jackson Police Department (Mississippi) Juneau Police Department Other Joint Planning Document Judges for Dem
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 0x9aa81fc321d24514f6a13d694bb803178d31f06bae30a4ab7cc2d86955614e3c. 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/f62face4-8ba0-482e-904b-0fb5459ecb15.json and https://artists.proofprofile.net/proofs/artist/f62face4-8ba0-482e-904b-0fb5459ecb15.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 0x1269ba6fc03368eaa0172fc233250eff3511918511dc06c287d96bd8a4071fd8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEUM71603289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d786e594169ece84fc5271a02cd6cc4bf3b3a3569a0386a1462ed529b5e45c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEUM71700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b7343c1ef1c7f8727e3b6a760c9ed84bd879299b9fff687820e12eced4f458. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DELJ81960764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ae11d8e4ed1023e2933c013142a41b1dbb609a0ffb376548db0ba2da0307a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DELJ81960766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac060b910351e67f8f47707160c6a1839c6dacb78037c073a59f3ee78d8317c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DELJ81960768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaebccacb860ad326b187f57718416068dcb0e8e6e9f93befc3ef1a488ed66b7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMDA62118119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a39b056968ac2849f65abac89b1469c7e8c8c176f931eb2d73992b4982538. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMBZ92249574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd94bfa780f1127044ef59e95d8aef3bb8804f1120d4d5383f490632c08f664. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:44:38Z), 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/QMDA62200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee388b35366fb66b6fde57e5b4f8852206fef32d78e4f98b86a63993b8f16a8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA62289747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4221ac11cab973756aca9796fdb16c8c21e0656a7e50c3aee7c8f560443535. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QM4TX2419238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb342bcfd9f318eabece971f9b4d7ba350b5136231d20e7c7423b6b5722336e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6MZ2441420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee388b35366fb66b6fde57e5b4f8852206fef32d78e4f98b86a63993b8f16a8. 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/QMDA62289747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4424592826864dc2807ad33189f7e2a00b10f6bf3e7451605a83fe09e858dea. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM6MZ2441434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf0cac743ce9aa73dd2547b2310bb585795f55e861043a6c6e2b1b2d87c4c42. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6MZ2441480.