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 0xe6a5457daa226a7d3600ca8b05af7058d49865315db6441005b24d71bbdf717b. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7e5d054-8dec-499c-afe4-c26523e51229.json and https://artists.proofprofile.net/proofs/artist/f7e5d054-8dec-499c-afe4-c26523e51229.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pa Sparli Ke Lewantob (Pa Khata Hm Che Za Sta Pa Lara Teer Sham)
Pashto Song Intezar (Za Laka Bulbul Deedan da Gul Ghwaram)
Pashto Poem Meena Ao Husan (Raza Che Yao Ghalti Sangeena Okro)
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 0xd328dbbfce91fb532c16b55d9a00308a1aedbbf70817fcafe031481f126f6962. 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/TCAHT2301902.
Pashto Ghazal da Sabir Junoon (Da Wakhtuno Ayiney Ba Safa Na V)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0daf8c0f0f40ebef1d0706407cea5c85ae02f5aa0e98d70493f690b6a504fb. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/TCAIL2480461.