Mamta Chandrakar (born 3 December 1958) is a Padma Shri Awarded folk singer of Chhattisgarh. She is referred to as the Nightingale of Chhattisgarh. Mamta Chandrakar has her post graduation degree in s
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 0x4cbece28a89ffa0ae75610bbfc71ccf879fb0dc57d3f648c6e8889ea6a00ee8f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2726d4dd-ebc4-4889-99ab-b77443ee2e51.json and https://artists.proofprofile.net/proofs/artist/2726d4dd-ebc4-4889-99ab-b77443ee2e51.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 0xeab148b2101b21deee9310deb1e4a4035580d61747feac42f86542ef3fcd6912. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDCH1045130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d068ed81b9ec51f4b797c495907e432177d10f562849e21ac5653fbc69093d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDCH1042288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe06c85a17f7469ce2a592e6c4f756d1caad4eef1e7044dc848b15c49be31c22. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USDCH1042294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10c74e39de90a3c46c91c58dddebadea14bf9a94570ce76db76dbf08418f7a5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDCH1042293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb410fcfcf5ebaf994ba486cb28bea06b73b2707258afb5e033871e9e42a5a23. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:23Z), 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/INA5F2303759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f52ac4d17121e6f31418a30e4c0f2ea8fdef5f7c4b922f838d2a6e574d10521. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USDCH1045212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb1c3be42fbbb759f8ae0f2f6d73eb27dfe5693778b4d498cc2cf6f070b7cd1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDCH1045120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30c09cfbb490d572f94043eea88c7e80ee79de37b013bc532400b772f3ad1ae. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:45Z), 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/USDCH1045125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac3e9f50f9bb9141168905803a2c0976d200abe0803912a8a71edc3a199f3c4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/INV440900343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24e9e3fd33156d2f0ed8877b1006e115e33d03ed1f84ab0d094fe34b8a1c96d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/INA5F2201846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110a21d9d330cfb8132150443ed999382aa365bad2c189e0223236ad577a6a71. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:17:42Z), 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/INA5F2201848.
Sach Kahe Ma Karu Lagthe (Chhattisgarhi Suwa Geet)
Bidhina Ke Kaise Rachna (Chhattisgarhi Suwa Geet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84410f5d2f928c4ab15694bb379223eab024f20dcb97baac0f81cb7921456460. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/INH412106196.
Sita Lanka Me Ho (Chhattisgarhi Jas Geet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71013c93752deb4c46fa3daba7a318ef0a2c354432263c4691c3f9fff5eef74d. 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/FR96X2184735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca897f820bb909ae77fa9a2931970ab2b66422e012afb0a0b392f05ea2248c9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDCH1045282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e64e6508a6066de35487b7009c2331e60ca51d99405dfd891c67d71efe455a2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDCH1045283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48bd7d63dc48bdbb1a2df37c4aaafc34bdebe247c9cfc3352e913133de6c9da. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USDCH1045285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa356090788cf64bb1c599d449cab83cb0e6a7deaae14529c34a3378aaaf31d55. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USDCH1045287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573d58edf730e29c5980ac890390a41c84f2f0b5d56da1c22ff809f0efd87f33. 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/USDCH1045288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4119cbbc87391ebcee55e663cbc75c196c26c5886cf9141ce46beef4601795. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:45Z), 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/USDCH1045273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1047c01b16d8e7dcebaa9484dbc5ef5cfdcdbaf9009919dae64742775cb5fe3. 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/USDCH1045274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97972f4cbddbacea463cd30ec1377c1adde0bbf1edcbd2191ce4340f4d09045b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDCH1045204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92194d1262fcf75d09a29366a9b42354067e34e7a12727966ee7be5a80a84cc3. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:42:05Z), 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/USDCH1045205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4e1bdc8eb43be196bfb5d85aa55e88ef252ffc3b165f59d5725fe474e4006b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:43:14Z), 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/USDCH1045202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa664479c1793b21006ff50b20824e6846ad0fd93333a16a6d858ac79b90cad. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDCH1045203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78d870e340c6964138fe65b93d3d217d4be401097b7df67c2371a1817289b1f. 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/USDCH1045201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3a6ce6e66101a150af7e99d168958f255f1b284a546f565069abdee037b4d6. 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/USDCH1045198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83090b274575ceae30c0a0cbd0fb9ce77d5937f169238c976b5f2adf8994b8b7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USDCH1045206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebdfae2a86b37bcab5795f58b75527b1a4fa08d54b2079c658196eb8d0b2890. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:06:32Z), 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/USDCH1045200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2974f686d0c24b837301821e2e4ddb8dc70a389cf4a76fce691da6cdf94e22. 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/USDCH1045199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d068ed81b9ec51f4b797c495907e432177d10f562849e21ac5653fbc69093d. 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/USDCH1042288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10c74e39de90a3c46c91c58dddebadea14bf9a94570ce76db76dbf08418f7a5. 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/USDCH1042293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48bd7d63dc48bdbb1a2df37c4aaafc34bdebe247c9cfc3352e913133de6c9da. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USDCH1045285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca897f820bb909ae77fa9a2931970ab2b66422e012afb0a0b392f05ea2248c9. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USDCH1045282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573d58edf730e29c5980ac890390a41c84f2f0b5d56da1c22ff809f0efd87f33. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USDCH1045288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa356090788cf64bb1c599d449cab83cb0e6a7deaae14529c34a3378aaaf31d55. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:16:48Z), 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/USDCH1045287.