St. Mark Coptic Orthodox Church of Houston
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 0x2214dad539bfb8fc24b1bd1a6db03d06fbb6f052ed106fd894a1b5ffe6956516. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7d17ba9-3c67-4c41-b6b5-036e1113b9d2.json and https://artists.proofprofile.net/proofs/artist/a7d17ba9-3c67-4c41-b6b5-036e1113b9d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Coptic Hymns of the Great Fast & Holy Week
An Introduction & Prayer by H.G. Bishop Youssef
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 0x7c6b07217a58df50b149d9beb3b84595e6cfccd6910902d471574ed4e615d496. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/USDHM1613017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d1b537b19021cc7b25e9b5a132a7cba72aa88ddb53f56c1ded35e9b7ee410d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:24:32Z), 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/USDHM1613019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5176d684a0314002560161de522462b25ed16a06e98dc98bb41c156f5d9ea4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:40:53Z), 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/USDHM1613021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291b9d511323401ca673a15f6a8b9c4e728ccb0d1aacd4d0b9301db45ecaeffd. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:12Z), 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/USDHM1613023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894b5bc3597708e76fad46a70a28b45250734adf9e88ddee2b6cdfafa07f6be3. 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/USDHM1613024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24c0c235909e6ddec189003770138be63d60ed1c2627bc355b215b484fb5c22. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USDHM1613025.