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 0x050a251dd91664bcb99c278402999c8f89b67a720b2a64ee184ed9941d00c6f5. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5af7e1d7-4106-4ebf-80ef-3bbf28b5575f.json and https://artists.proofprofile.net/proofs/artist/5af7e1d7-4106-4ebf-80ef-3bbf28b5575f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ekta Chilo Sonar Konna - একটা ছিল সোনার কন্যা
তুমি কার পোষা পাখি - Tumi kar posha pakhi
Tomar Ei Cinta Sompurno Vul - Nikosh Kalo
Sumaiya Rehman Saju - সুমাইয়া রেহমান সাজু
Amake Amar Moto Thakte Dao - আমাকে আমার মতো থাকতে দাও
তার মায়াবী চোখ আমাকে তিলে তিলে শেষ করে দিচ্ছে
Ami Megh Chure Dey X Ei Bristy Veja rate
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 0x5efa73362a6f6ab3811de57be2470d800d47af6d0d5c00c62b8eea4fbf059b5c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDFP2122374.
Hasi Ban Gaye - Ek Tarfa Ashiq Tera (Mashfi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589f8f1da13fc596a1f52ed7aadabc70db6b9643e851e37bc9882d5e1175d11b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:39:35Z), 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/QZLQR2187011.
আমি স্মৃতিগুলোকেই জড়িয়ে শুধু - Obosthan
ও আমায় ভালোবাসেনি অতল - এ ভালোবাসা তলিয়ে দেখেনি
স্রোতস্বিনীর হাওয়ায় পাড়ি দাও সমুদ্দুর (Srotoshini)
Tu Jaane Na - Kaise Bataye Kyun Tujhko Chahe
কত রক্তে কী মিশে যায় কী - সেই নির্মম আঘাতে (Sakkhi)