Matthew or Matt Nolan may refer to: Matt Nolan, English drummer and artist M. J. Nolan (Matthew J. Nolan, born 1951), Irish Fianna Fáil politician Matthew Nolan (musician, born 1973), co-founder of
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 0x614366ea289e4aad7f7d472c5fa68bc86289416b234e0f5f4c4c6a3774acc086. 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/292ce49c-e032-4a48-9f0e-260d7295bb78.json and https://artists.proofprofile.net/proofs/artist/292ce49c-e032-4a48-9f0e-260d7295bb78.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 0xe97280ca97eb36ef1ed028fa380f7ef56602bfd474c0a965dec2ab6f0bdc7f48. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBMA21829630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb227e7e65ac5a305e5a070653be160dec05e22da8f336541b5907cb0940896. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBMA21931724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee4a821901d1c9d12ffc3acf18250caa4ad4a81c225251c4d7e7fb4addef1e2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GBMA21967376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f15ee13a437e209f0f5a3d8bf807e332712b0fc8528b8e122b95365550ae5. 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/UK6KW2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af597677cab5e37c34c92ddc73937f7d989915e06d8a2d4801bd2e15b9a5baa. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/GBLFP1906901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f60f12471f4eacc4358174107015469513f36bf0646f72214f202df333eb618. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GBLFP1956428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17834e19d41dc66279ed9a6720767182ac81a28b2bb0da78bfd7175ef43f41db. 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/QZTB82328836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9947c1465851082b6f5a76f51de93e421c351bd92a24cc5db99928e56da77ac1. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZWFR2354343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06911bec9daaf47ab16e5a346a420335decda0d24ff5ac3b5c097a9327584279. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZHN82432734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60123266ff4dd5ce24b0b0c772c3004e05f01c63e38d339c10c292a968553a6. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZHNC2406252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4f37515620cdae640e1bbccb75f3a8215813961709f34b3709ed20b7c4f952. 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/SE6HN2414734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa905cbac0ca4963b4dbfdaa9b57e59f0f4e03a2059d9dd0197349b2b7bcf5e04. 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/SE6HN2414733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af9ce6b610dafe5bcc1d9a1f3e8a55667293e34fceef829ddd38fcaa8ced47e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6HN2446913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a71a14d7509b0bb8ec51c290b9b0bb8eab11e083b6dc795dcb6af68ac0d17a5. 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/DGA0M2423279.