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 0x41b3d3a21b650d14c9cdab5c9370801dc74aeee60f31283d5d88c05fc5b04865. 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/ddaa414f-5ba4-4a83-bc6a-09b1f30eccdc.json and https://artists.proofprofile.net/proofs/artist/ddaa414f-5ba4-4a83-bc6a-09b1f30eccdc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
انا شارب 3 ستيلا (من فيلم محترم الا ربع)
انا شارب 3 ستيلا - من فيلم محترم الا ربع
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 0xb0cb915df2eb04c5933b3409d5f9ebc0b46242844ce064f65382059d2ffe0cd0. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DGA082205920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f430c8b0d0e3a2ee07d22b59f46d464b729f77d3be8d8e0de137ce2c24d9b73. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR6V82041867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4749dfb1e86e464d13c1f85c0d4ccafc02fcc4ac7538f5d51b00b59ef457d6b0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:07:02Z), 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/DGA092331745.