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 0xd470848c5ea946b10213002432c9b4d445052d75606235493bfbe8e9334e344e. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d6be09d-9b6e-4ad1-90a0-f0ada7fb6467.json and https://artists.proofprofile.net/proofs/artist/1d6be09d-9b6e-4ad1-90a0-f0ada7fb6467.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ابصالية الجمعة_ابونا مينا رمزي (Coptic Hymn)
في كواكب الفردوس (تمجيد البابا كيرلس السادس)
طوبى للرحماء على المساكين (مديح الصوم الكبير)
لك القوة والمجد ثوك تي تي جوم [تسبحة البصخة المقدسة (أسبوع الآلام)]
لك القوة والمجد ثوك تي تي جوم - تسبحة البصخة المقدسة (أسبوع الآلام)
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 0x7580476e0cb16509a883e856a439c16275bc874102c901b9c953e97c43095fc5. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:15:33Z), 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/FRX452491617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb53c19243b78a7f66e63817febc0af0e1ee3060abdfd7459789e2e72817d0cb. 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/DGA092410811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb97feeafa9695b274b511717d3a7205591bf85c185c61d273db5045b2995853. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR96X2575763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f99bbe254aab4b06ef8fb2390f1eb544d56241bd0f8749f22f821451f2a16e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QT62U2551989.