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 0x4828724e467dcbb9ae1a155409df93fa0eeb1d82b03010794426468e6cc3ef90. Chain 2 (Bitcoin): anchored in block 953991 (2026-06-16T18:47:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f664fa1-791e-4560-bc0d-447fc77f7e5f.json and https://artists.proofprofile.net/proofs/artist/2f664fa1-791e-4560-bc0d-447fc77f7e5f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Khat Fatima Sughra Ne Ye Baba Ko Likha Hai
Mera Hussain Bagh E Nabuwat Ka Phool Hai
Roz e Ashura Subah Ko Dee Jo Akbar Ne Azan
Ro Rahi Hai Aaj Tak Shabbir Khak e Karbala
Vichora Bibi Sughra Kyun Mere Veer Nahi Aye
Yeh Musalmano Rasool e Pak ka Farmaan Hai
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 0xdb3cc463fc4a4e7bccba520e0e85cd24fc7cd7ae7c4387c6af25d182298fe733. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2497866 — a six-check JSON result.
Hamain Panjtan Ki Vila Dene Wale Tera Shukriya
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6737f1ff106ae392e0b09820f16451a166492b530888dd3b2b05a81edcbc43. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDW2568292 — a six-check JSON result.