Silver End is a village and civil parish between Witham and Braintree, in Essex, England. It was conceived in the 1920s as a model village by the industrialist Francis Henry Crittall, whose works at B
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 0x98dcdaa5cb8c906ef273fb0816bd8f96c72ec948a29df7c9fd5d2039e509506e. 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/9d5b1321-5c70-4c5a-9cac-b7dc2362bb1b.json and https://artists.proofprofile.net/proofs/artist/9d5b1321-5c70-4c5a-9cac-b7dc2362bb1b.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 0x40f89d403ae8a8591e995618d8025ba97d82d5fe747e55a138f4b7985ed518a1. 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/NOGBV1801032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92a9568478c0a95e1aab90ba93d5976eb944bc66bc3ba8a960d40392b37952f. 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/NOGBV1901043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44279d612d5b1848433375eda1cce905941a36daad6ceb87df3f388c0624bc1f. 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/NOK9L1602020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d246d78eef0aa3c20befc3b126e5f14af7ebee69b32866c1dca29c9b1eda54. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOK9L1602040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6981887398605c5410997f783a414051bb39cc9a447c5d8638e472f2c3d193fb. 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/NOK9L1602050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bba30efcafe8b8d985550622c63b950b0babc32615737136d4744716712ccd. 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/NOK9L1602070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c4d0e79f49c0299d26d50642d769eec376f0e649742253f376e2e581e35123. 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/NOK9L1602080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e175ad39104be45c376b21f25607ef0a7ee893417289580168c6e3dad75f759. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOK9L1602090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcf67f20cc235d2792f013e813fad5a82b3e480a219e2304aaf465dd2e842f9. 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/NOK9L1602110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd129bc89424ed8f4091ca76c9952f6d38f0c2ba7a4bc7d8d7b5f40f2423ac2ae. 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/NOK9L1602130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db3429c2c2ba5954df203d601ca32dcda6d0133a296132a667673874bb52298. 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/TCABN1384714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d87235042f903d9b552b601a452df0a14a840552963d4a3115b21b08ba2e361. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCABN1384716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82196f766a591a239ab91d6b8690e2cd65d2386979e920bca049bfbdc00636aa. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCABN1384717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0e24d8effa8f6642257e7a70337b9a6829e7361cc6a72aad760f61545aa20c. 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/TCABN1384723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc2c7060c69b399cb841b607d08123a593bfb7d830f84255ec1351fd96b284a. 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/TCABN1384731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc547a9e7a075433e3d8781a4e5dbc2892671383e09d10676cd78b715df9c9e83. 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/TCABN1384738.