Jack Broadbent may refer to: Jack Broadbent (rugby league) Jack Broadbent (musician)
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 0x39ca6f7b472c275dffadff03873a50d831d66b8091a9fb08b2912f712e5bf852. 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/3427a6d7-a92d-481b-9249-7b4219b80c12.json and https://artists.proofprofile.net/proofs/artist/3427a6d7-a92d-481b-9249-7b4219b80c12.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 0x2f694826b4dc58f8a0209e5d47016fdf0001fbc6b055ca42740acacce04e545f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UST8K1545904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2acb40bfbc1f65d1b0b495cd4c5f4bebb30808af531970418aa16945d12a61. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UST8K1545905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908554f3de9fe83395b84e3cda15139269a5341171a622a6927907cf5919380e. 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/UST8K1545908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d1ab5baed672ffb57942c3fc3e11d038a711871232b3cb84057fd909292e68. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/UST8K1545910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449098dcaacb060b9297a60a5a7564d51f67076d6ecf95fcc269cfb05e6fce3b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UST8K1545913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce1cfa2088255a710832a04ed6a984c0cc9e5613a99fcfdba66ea3748851c5f. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/UST8K1545914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6c6d0b12ce0a0578ffd2764164c15584f67f095e5cbcef128568ff02512866. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM4DW1683044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc16b9cf18314849c29353a772a2b7401a5776a013dd2ac1d26644131becd952. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4DW1683046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b506147f4c915d04f722fdaa193e1b892a1417c6caf5d266f1a8097f3d41bd. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZAPG1889017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1df2ddc601c594a8ae912768b485d5b45b10563d89ae8b2c1f664d1de9b0c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZAPG1889035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a7404927039c6600614ad0ec5d00b6df2c80717b581eeeb05bc2b7f55d03b0. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZBJJ1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5531ad91697f6887c3efe0e77ec12d14c52bde86c5c1d74877859e7280f0acd. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZBJJ1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e2242e4fb1dd9d4a19e0cdd6a5ca58615bb00153adff6e99f56014f079b0e6. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZBJJ1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226ebf7cfeb748a890c60884145f405839f0b13efb3763b4ab9fe397f2fe93cd. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZBJJ1900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2900292ce903f5f24212a0c7e554eba510d8833ab8ca1be77491fc7ca060621f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ4DX2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb240b988f0858a350f91a9488e8563c09da62ee3079dbfac6ce5bc00d91e785. 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/QZ4DX2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c8a16f155207fa9e4d6360feb8316e4af28126d56de38fa973d9604e1f0803. 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/QZ4DX2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d0bde22ecdf15154a0a9973342ac0d9e665f3e154798c4f0a2130f5de804e3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZ4DX2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041b6d2fcdffa90ac086e37193778b916b926e2ccbe386c66fe99c0a99006d27. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZ4DX2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d723fcc9f894f40075c03d33f53320330464cbf80b0e486a1d9a8002fbd847. 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/QZ4DX2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4660d62dbf7701134ee3b6a7bb64c145f1b3c29b1060aba43fc9d35e5addbf77. 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/QZ4DX2100029.