Vidyasagar or Vidya Sagar may refer to: People Acharya Vidyasagar (born 1946), prominent Digambar Jain Acharya (1946-) Ishwar Chandra Vidyasagar (1820–1891), Bengali scholar Vidyasagar (composer) (
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 0x896224be9c0d654de5659c5a66ff7976d74876b71e26f70aa98d49d33f38e3c3. 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/04f82def-27de-4a5b-a865-4fea28a51a5b.json and https://artists.proofprofile.net/proofs/artist/04f82def-27de-4a5b-a865-4fea28a51a5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Varnappakittu (Original Motion Picture Soundtrack)
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 0xdec20d702f70b6625130af7709b0c7a25bc6fe20758c64951116070fd7a3fe14. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INS172202192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b861a1949f8b8217e5a04381cad1eb6dd35b7398da40c0b321f2c7abed1818f. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/INF040200462.
Kanaa Kandenadi (From "Parthipan Kanavu")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2ceeeb6bbee3afeeb3681e67fc381e2b5a05680eaa0c56d3298f1d5457ca07. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INF040300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33b5510eb574abdd2653f9032dc39c1e8856dad3b98c8d4918dc464bd403140. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/INF040100366.
Sinthamani Sinthamani (From "Aahaa Yenna Porutham")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e13e78f50759fdfd4f6a3ec167f7b9e59cc2bfd5251d5cf4eb532b70526c0d. 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/INF049700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6345f918dcc9c1922bfe66a2c5c58e33651fa4e37b4bbdc23e124f4b35fbd03c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INF040200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49617a8dfa3ba024cf4179a80708f8e7e0aff415afc85ee605ae25888bfd2f45. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/INF040300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cebc7d1963d766de3f7b161f569a33394f0a52c36f7f32794af87eeb31d3b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INF040200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa795073c5ffe5e5d8ee490713a3b3431d050df79127d08636ea4ebecb2cc3b68. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INF040200464.
Buck Buck Buck (From "Parthipan Kanavu")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa110e1021ddcd76863c2a577ce6ac80efd1a127f743ef9201de193cfc2f88a85. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INF040300505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe530553d859f2694058795024a5001e94f3982897a14689e74bfc984fcc81499. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INF040200463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64360635a1775228fc8efa7c0fe9ef0679fbcb47e075c3f171a53e7f8c487936. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INF040200461.
Mozhi (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ab8fe1d65f399e7883d5ca082352ffcd653f4cdf05d472a4375438197cb66a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INH100700790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603b09461ef0c1b00597abe4da303d616f438453554ba90a2f4e5fb0e85eb021. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INH100700792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6064219d40197ecb84fc49fcad4f6b09cc4daeebed0042f783a1ed8244a7f795. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INH100700794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc548cd1b2bde35e9825a3d9e7c8912580b7a91bbb65cf7b4e2568085b835c02e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INH100700797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d73584cfb7e71291344385cc6f4bd02321e7325a423e6972ef672a978646820. 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/INH100705322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee0d18e14f27f4378b8905c8fcda5f213db7436bedb6034910f58d5a53fb8e2. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/INH100705323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28b3136dad9d97e26c43b090a449ff60a0875d1e2b3a841f44a7d939250921f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INH100705324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08769faa76bd0af6c88a7519e5bda708e27c935929291f8f145a0b0faffa1821. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INH100705325.
Em Magan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13a39ff61e2684e9f362f7553e4c3b28658233a4f5e1df8f436beaed74f2f9f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INH100625703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979b214393298b83257f8170b469998c3e60591877725fe907c37e289ca92bfa. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/INH100625704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668731be734358adc3a6a0017793e7f7051f6bed0e561b4b3b0c7b1720991aad. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/INH100625705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ee875abaecf54cebba964c060d723bfc692bcb931a2cd85120644bc0fe020f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INH100625706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe87ebf00f4b6216a3170ed7e437987b0a5ed110728e325159e8bfbc76556a1f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INH100625707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b10319b2b86cf9ac7a13c903e18ed5ee1377d03b7fd4a9dad6391d25f6afd4a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INH100625708.
Suthudhu Suthudhu (From "Kanden Kadhalai")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3904609be394217afbd47783227fe5ad33e47abbfee331724e1e1a06d27593b7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INS171100576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391b90300c5c21086ee5e18cc0ddaeed3dc439c218f8e41eb3a63b155ff71968. 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/IND292206600.
Devadoothan - Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b68f32dfc47e939e03a75a371049c8da847e4738ef3b926023d62e3f6842072. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IND292204396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f5996fd3e750ed7c09cb827530770997f87574dfd51443e5de5f4c9b9dbfb0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/IND292204397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8754a20ab390b0a334220006ef261c9c2f5f38058639097e3c2a881bba4ab292. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IND292204398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97583b6900c6eec1a22b804435f1d67e6da017b325cd1b13f028e2fdfad788b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IND292204399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d5dc0505a7c314340d37cf6f667720da919e8b0d2c459137a33a3f1818e0cc. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/IND292204400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1787847214ce930e5d634b0d062007673b92962565a42014abb231d4909b5d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IND292204401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b1d34dfac9a018113b397ad9452ac13325122190a6fa1977b1aa21cfd8ad16. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IND292204402.
Devadoothan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe108f6f71574b83e308a452d37c34cfb18d78d4e5e10c2db54b7db2ffa30217d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/IND292213031.