Sikkil C. Gurucharan (born 21 June 1982) is an Indian Carnatic vocalist. He is the grandson of Sikkil Kunjumani, elder of the internationally acclaimed flautists the Sikkil Sisters. Gurucharan has bee
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 0x6356bed3fba868762cc151d30ad9d113bec14ede3734831ab0f38c81c53beb01. 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/b46b745f-9035-46d3-a906-8d8925c991ff.json and https://artists.proofprofile.net/proofs/artist/b46b745f-9035-46d3-a906-8d8925c991ff.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 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 0xa3025be1e3a7852ebfc772b36493035ee0f4f174c8abcc7be23e5c807624abf0. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/ING110424201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9dc4c27d2808ec35e115613934356c456a6d8ff529f8e3c30c80ddbbc20ad3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ING110424204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0f3462bfcc889f9f4e9e8b17a0d7ba4916b70d221a085e5da305ca2b389e8e. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/ING110424212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2287dc5082c9867d8a32bad4440e97a245c1e79516b104a38f12e7125615eaae. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/ING110334604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b312572664eb93bc2edb0fa5dd844a0e0c95a89ef19c47cc664f091b9542f4d. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ING110334605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd990ca1dd411788b5f248aa636d4b13562bfbd1361e7816a933e619100be6e8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ING110334606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f547a3def2820f216688c392a386856d50eb0dbc7bdc0d196746ce925f6d3e. 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/ING110334607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dcd75d1ddfa059ff86bc6114a2004aa6a1089ca271acc83f3606578e33f82e. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/ING110334609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae9a9caa8416ee7de3dbabb2d0e68c09a92157734f0ab1aa0c1bfcd643f585c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ING110334610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2dda33a2c4e5ddd78544f8bb8ead47cf25907855301ef85c60d576cbd8fc1e. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ING110334625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe249920b3f48737df0b11be0faa2c5f50e26a2c7609bcfa060ae3bbc87601819. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/ING110334626.
December Season 2004 - Sikkil Gurucharan
Sikkil Gurucharan - December Season 2004
The Divine Voice Of Jagadguru Sri Chandrasekharendra Saraswathi Mahaswamiga Vol - 5
December Season 2007: Sikkil C. Gurucharan
Chidanandam -Sikkil Gurucharan Live At Chidambaram
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e45531cf7969f8131d7d8d939d35ffbdefdae8ec666bc3ea46c7b9c0d85e8. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/INS450900474.
Naan Oru Vilayattu - Navarasa Kanada - Adi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c36e67ad9d68aee873e093f3df662e015166c28e79e325c9b89f43527043c4e. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/INS451000300.
Shrichakra Vaasini (Compositions of Smt. Kanthimathi Narayanan)
Chidanandam (Live at Chidambaram Shri Sabapathy Sangeetha Gana Sabha)
Sikkil Gurucharan Carnatic Music Concert
Sikkil Gurucharan | Anil Srinivasan Carnatic Music Concert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467ad058a9a183300084e48830c0d5533b6a54a5d1ecad1436585696e9788b47. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM81562907.