Hridoy Khan (born 3 January 1991) is a Bangladeshi singer, music composer, musical artist, and actor. Khan comes from a musical background. His grandfather is a music teacher, and his father composes
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 0x15817a9546872948c81f394d4f72d0290f31f5c93f347dcb1fd8340c3d4ba812. 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/2c09b6ee-c7a8-4b29-bd6c-84787b70ac98.json and https://artists.proofprofile.net/proofs/artist/2c09b6ee-c7a8-4b29-bd6c-84787b70ac98.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 0x011ca1856dda7d5bde6c429c1116a0a7468211cf91a42ab390d4d97c5fcbd85b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX202545151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e69baced8b24ccd9e85eae5dbfeb8ff97cb01d936edb67a155256d937972ad9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX201633903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e9427724bfb0a2055996228c55e0b0915d756c53711e8a5da13a1319e504c3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FRX201633905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664640e6aaa2cf5cdc6069812cc29611a30a3889c7ad4e521ea7116ac45d3447. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX201633906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a337bc86fbed5832458495992c853e6f605bc33d22e877eeb0118d8dd02ef0. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FRX201633908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39049f5589a46b7b403514e2df5b23980762f8ebc90c7a3e8149b7b9eac0406. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX762334899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa756604533c64c5b2e28b58e76a28fb4b4428e7fe9496e7085f705281532f4eb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX762334902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056af02969864668336332f1e5d95ac21be62c327e91e907d911c6b3d2acd831. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRX762334903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b8e7e22db5f589580a1cbb3449f2c362ca6128ce9b1d41f85ae2ed1b84ef3e. 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/QM4TW1820439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3828f37513ce34241e291c24809cdb20eba4965f0c385ed7bd5bd55f0c18f71b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QM4TX1830395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798ff95b7cf53dc7e25bd40c5e548010a108155964ea96eeb838f700d3b33b13. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TX1830397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1184525a9a39c6e1cba197957512f888eab2fd5045896405ab036e50d2499cc. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:48:17Z), 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/QM4TX1830401.
Hridoy Mix, Vol. 2 (feat. Sami, Sandipon, Nirjhor, Arif & Rintu)
Ek Polok (feat. Sami, Sandipon, Nirjhor, Arif & Rintu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a33f6e948bbd82b5e47c9b2ea8ee7cfcd8757c781ca2096c52e0a1db0b7d85. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US3DF1545585.
Obujh Mon (feat. Sami, Sandipon, Nirjhor, Arif & Rintu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cb5380d6a651e8ea08a039ac8601d1973a7657df6a99e2968230a52b822168. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF1545589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906b5ea741a88dd8307e1b64546092cbf78555ecfc52b6fdc2b926cb36ae8295. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4TX1874080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76665aa26030d76b5e320b3438eb3207689ee03a14bcf0d5494dc2ddf606a31e. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QMFMF2118675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9c38617db45435ce915a384088702e59222ae52e91c3ec12c2ad1419d80c4b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BDA172300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc058a52b1101c34f0baa41644519b018271ef0efba2a28fe9fa57622bc87f1c6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZS8H2107740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dcf1ba2a3cffbb323f3cd3d970333312bb95e395621ee9d825244b92bced84. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BDA172300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c58fbc0fd6f1b207a6806f2db9f540a2ec3b69079a5fefc32a9db3c37a8021. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BDA172400003.
Mone Thake Moner Manush (From "Raat Jaga Phool")
Ki Jala Diya Gela More Lofi Song ( Slow & Reverb Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31cadfb1fefbf237eb606cca3913c0269e1e8dd4535c6e1cba82b8f72cffd06. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:59:53Z), 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/QZWDW2492700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d72a834f595ef85c24848bce3a1bfd0cbad35604f5510108e55f62397279f3. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BDA172401118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2a2be275ae003581e9c52f148b70e2baa7f220d02d24121dc00445a46f1df5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/INS181502057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718a9ac2ea1f43a72c417f03fd20fc1de24ef20813514afc47330f79cbf53497. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR96X1801017.
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