Robert "Bobby" C. Sanchez (born February 15, 1961) is an American politician serving as the 41st Mayor of New Britain, Connecticut. Previously a member of the Connecticut House of Representatives from
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 0xe4d5ecca43903e10b430530cd4b49488a1ba72eabc7c53ffa9e6459903d831e7. 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/2198056f-1379-47fa-9a37-1c2ba8a7da18.json and https://artists.proofprofile.net/proofs/artist/2198056f-1379-47fa-9a37-1c2ba8a7da18.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 0x42cab5f261447513b2873f33dd5c021f54af800897a85d485bf4a5b1d3d7bed2. 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/QZES52118043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc842663455351904971e839afc38fa2de02b8a868b7c8b82577c0c011852631f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZHN32164687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b7fe6c664d063c46811cf03ae6e5b3a18a0cc9fe808f1e34e25e988b83084c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZMEN2168207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fdc3d40da39f73761ebdd85442f11ab1354c1193bcd44788942f1c319bc24d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZRP42175630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3f6bdf6e93a2505037ad6bfad836df03f65f49fb39925376487e587e331bce. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP42175631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4be1e1a667e6a522335c183ecc26ac154a8e61f530bc3a02fbd4ca81ed5642f. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZK6K2257562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe496b97a08984bae2705fa28e53f60ad871fc41d78ed9cd1ffe20609c680bcc9. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZK6K2257563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463fe128cf34100b379cb0fc14779499e7f931a6ad1375ee2e6241256b5aea1d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZTBB2262367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf98596491215b84d9396b7eaf6fb6417d4590d44dd2960945080c5aeed7fbb. 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/QZDA72474390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0c2cbe39426568d41048d7e67c39c9388ff35e1e5d32184b44e6a3f46d795. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZDA72474391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd759129ade99bb9fa8b6f1b31969abef6d4e392bd61ec22ef7a25671152fa939. 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/QZNWR2497546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ab0ee63b688b375ad26a9ed58f86ce093630a7cda365c42318fea4831da8b2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZTB52490255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf2fa915248351bde7be3e35bc97ab1381a921a64091522d3159039ac3b04d4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB52490256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6481f283461c47fedfa66f4f7f9adaabe9734fd15efaab08b38799a2944f65f5. 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/QZTB52490257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f28041781a71856f282ca53750a4a7dcbd6f4663939c248c7a6a81599bddcd. 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/QZWFP2469647.