Grameenphone Limited, widely abbreviated as (d/b/a) GP, is a telecommunications service provider in Bangladesh. As of 2026, its subscribers span over 84.33 million, making it Bangladesh's largest tele
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 0x52972443ae8947851a47cddfcfd5a1405164ca804b3e64f6ee3f55c3216d968e. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09f3388d-05d4-4e88-a4c0-244699af13f2.json and https://artists.proofprofile.net/proofs/artist/09f3388d-05d4-4e88-a4c0-244699af13f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x8772739681a0ee01d32d1d3a4af0281a21f1ce46c8658dde7e0ab7de85795b1c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES72316396.
চলো বাংলাদেশ - ২০১৯ | Cholo Bangladesh - 2019
স্বপ্ন যাবে বাড়ি - ২০২০ | Shopno Jabe Bari - 2020
চলো বাংলাদেশ -২০২৩ | Cholo Bangladesh - 2023
১ নম্বর নেটওয়ার্কের টাওয়ার | 1 Number Network Er Tower
ইন্টারনেটের দুনিয়া সবার | Interneter Duniya Shobar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe905b3f7faf2ce4cfd031f1b6127a0cf2c356bbe2255ff4877f1669890408fa4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES62569399.
স্বপ্ন যাবে বাড়ি | Shopno Jabe Bari (Female Version)