Matthew V. "Matt" Hansen (born February 11, 1988) is a politician from the state of Nebraska in the Midwestern United States. In 2014, he was elected to the Nebraska Legislature, representing a Linco
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 0xccbc460ca4b756765e280fca17349fe059ff43910f65b024cb04a44d4baec41f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aab29e13-a29e-4558-b2a3-efe67f9acf6b.json and https://artists.proofprofile.net/proofs/artist/aab29e13-a29e-4558-b2a3-efe67f9acf6b.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 0x33af6383ce0a71079dd6d9e5669400db815087cef895ee37c7760d51d702da1f. 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/USRC12401749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b6ed4451d5b4dfbe8acf0800737898d5bc4a550a5457fc0eb8e6cfac108ade. 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/USRC12401249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0729bc02e3583f297feab506dabef558bdbe6816d5c5ed203b475bb68bacad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12302637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7348673cb0aa08b7e1186ed74f0b8d0124d686237da1a0959f43efa916fd32b8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12401256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d0abaa28c9052b16744161dc3cd0d15c186f20e255a6fb4da6bdd5206a1031. 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/USRC12401750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb116cfd77721c72075b4ad4cf948d8e0809c4bd11ce30a0150be41b3fb86654a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12401751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1503bc8be83bef5821029016c1dc3012d00737fe30a942b9e75b3e0d1195628a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12401024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7e0ec0caa5512ddde45e51e61a9bfeb68c509f8eee535270f3a815e332b124. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USRC12401253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376891fe24bcfd98200d5e195872bfb302ccb23b46275ea45c103595b42eced3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12401259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a99a02af8a516f1ad053aa81226fd1410f94d7e6500bda6504e6963123ae6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6085ba31382d2b472f4eb8600a06a12aa6eafaefa47ff68f7741ead0e9eb2522. 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/USRC12401258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e5c3fb4a56dea9a1405b7ea6e51e584ec37e92fef41dcae1f9f7ce216e6bca. 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/USRC12401252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc575aca314324683305d3c67e7e4bcc0e059fafaac957f4ba70d403ac12ab15a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USRC12401254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00550c9bf77d33ef1628b8d1859873b183f86b2c605eb926c8c8f890b5f7af4f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12400376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918ef1be47830f0c07a61ad553720c70297c75831b3f3754ad343b2c902d9cd3. 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/USRC12400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a5e4998800bae91a7738f097a48fe6ff7b3d772dc7f42913c616f18e6b7c20. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12401260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb707423d2691081a7fa7f2fa72b9003d1d2b7b0e66e310aba0eb1add834a29cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC12401255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aca3768db888fd9206cb7c23b01c96dca74e3c2a3d654225584537aef72715. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USRC12401257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82d11b1e69356f41a03ad4557e76c8587495c9dce22fbfb25b66cbe60a372fb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2528364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9919b35808a5dfce449ce63883afa7f701d9abc87940606de41337b1b54c488. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2444415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4f2e7208d419b52dd941ca7fb0729a9df97c898450a63b92118934886c343c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2416503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aca3768db888fd9206cb7c23b01c96dca74e3c2a3d654225584537aef72715. 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/USRC12401257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae71248e674e94eb091c4ca48ee40e9b7ee85f98e5c9fc27b9ab04f771cd5e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2481029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48d3db74b830092b36df920783e050ea0aa3196f1ce3f98002f7f4d3477d12d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2433074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f8f8ef26386e317b943b651f10d869b151b99aefc2872f8023c4f86334f72b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2414515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1259f17c7221afeaa404320731ee6ca3eb9c57ac7450479ae361b14c5eb945b3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMANG2202847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a891ad7a1774deb97ae7d95b688c22cd80fbaf71aa7d3ef85107e8b0688cd2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZRP52370997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e952aba4f3cde037be6e1f0d81f19ffc478dbc3547dca38881981bc46a1d33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWY2356814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b55c6789bbdd82970cb75c0ec51b95cf985d7c9903189ac160aa82c2d300d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6N2368785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7897497e84485a3df06c45eb2914593a2084b7a561c34e09d54d828a36296708. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES52372516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa09759cae07d581e1fd1218ce771552114bdfeb2a6e5817abc381d1179a7cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYX2367839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e09ecf5c12bc0bf206a5ba56948a8d69c05978aee0a78cb5158a30c031ccb2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAU2275976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92eed9979c4152dbea1eabfd2ebdf6cff1484967f8aa95acf5d53e2e12b9fed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SGB502250087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79985b33e96c9916a4c47857ddce9186867951b859c9b4caf15ea3687087d1c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA62265273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c37f187365a069d13e5219a18aa1f456c1f70c0569f03872d1df0aacae84a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEN2115937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1581b8f7c3d6a4f1723b8075202a174938d36105d085d6c382472181cdb27a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRIDO2012185.