JPB may refer to: Jan Peter Balkenende (born 1956), Dutch politician Jean-Paul Bourelly (born 1960), American guitarist John Perry Barlow (1947–2018), American poet and politician Jonathan P. Bow
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 0xae35796833b1e6d2f2e0b4acd5edc426f1702174a252ed7fa9a4b2d77e59db84. 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/aad0d682-8044-4a38-8463-cb251572cc43.json and https://artists.proofprofile.net/proofs/artist/aad0d682-8044-4a38-8463-cb251572cc43.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 0xa30e7eb3bd1c0a5ecac58a49e17673b16404b6258401500e1d8d37ad477241ac. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLMA21100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ccbd4d4518831d8bdcbd8bc5afb3a26a620c745128ce47e9c4425b565afa3e. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:34:35Z), 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/NLMA21600100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cf916605cd93e06a3bd0450465ba7fcadd2a295bd90cbf2b37bb8bb95cc1c4. 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/NLMA21300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0302e8e8f07132780cf2501ab9f099e5973dfa3f367f1c4613f2ef660e4b355. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLMA21500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1595ea8cdbf69233ad1ea94114b3e08cbc15500009b4b8526680222b078024b7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NLG661800471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be5b7af943402d60a0c9727b79697c6a967ad7fc532905f541a2f4afe603bf2. 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/NLL6R2100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4179907289be72d798227b5b91910997c52a4820f8c6f618bf247d90af3cadec. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:35:16Z), 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/NLL6R2101035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61488ea6901c4f23cb89dbc301657dd34e12b70068fa9db3e877d7ddb3c6685a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:51Z), 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/NLL6R2201486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27418592ab48b327203b6629246ed1e951b0b66b79af6d7a628c78be5de7c94. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTBB2575303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23835cc0fa9740f436b6473a840eabc2ee5bbaa67e9a20a6f7d771dca083acb. 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/QZTB92304154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ebb0863fc08896d815fed20059030845e605fb6d5fd1314cf303f4bcf6a508. 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/QM4TW2199542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8321cb4fb0b03dd1f696e50cd15f802f58e4c057c3033b8346df2518496e47. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES72066823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f27152406d6ba3817684e46a40b8328dc45566f84a30ed8a3d89f1bee3f3ce1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEJ1919316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec78a84474d14b1c154bd354b2ffeeda8594c07328bef5627dcf5fe1bd1a4f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZRP52458351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2dcab8142c5b16248f34a073569c8c58808eb015be03c17045e46ffa573dc0. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/TCAFL2151466.
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