Kumaravadivel Natarajan (born 12 September 1960), known professionally as Vadivelu, is an Indian actor, comedian and occasional playback singer, having acted mainly in Tamil cinema. He has at least 29
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 0xb5a0ed545175f476b321800fe4dfd30918e39727c7a859a5babbcdfabc22d4a1. 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/f7a00051-1584-4fdb-98ab-ccd59ed5e7cc.json and https://artists.proofprofile.net/proofs/artist/f7a00051-1584-4fdb-98ab-ccd59ed5e7cc.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 0x5bbfe011e786f7a78ca8097521be9271fc511be6e983a8d1231d0023a8005ec1. 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/INF040110063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8074211a72880521294123e270fc4b27864c19cd3ae8d0814d3bfaf377f03a61. 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/INF040110064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66364cdc02c99726467386ae59ec1e54239de402eea6c4762134ba42ff638208. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:40:23Z), 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/INF040110065.
Vadivelu Vazhaipazham Thol & Snake Comedy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86ea9e8178addc16b645081c2370f17f54ed3967b6e92ab0166726dea54cf2a. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:59:15Z), 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/INF040110066.
Enna da Polappu Idhu (From "Madras Matinee")
Enna Da Polappu Idhu (From "Madras Matinee")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ce08b290d52165455286522f9bbc61323e40d1f1fe2767a165f22984f17917. 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/INH102502379.
Vel (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3959b91cc0a613cf63eda8c1d9e353d3043db1a3cc63a4d8728b300b613335. 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/INS171100404.
Maamannan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf012a013f5e104a58b40d86f79d4364380047c396ddd40fabf6a3d48d65db213. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/INS172306654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d0a5c0984bdd71ee6da1344e9b1b03295b87ab208f3bbad0086abef6a94507. 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/INF040300562.
Villu - Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe174e1ba58541fddc7d66db1757897a18202241ae2b7f9b427dcc294e0503713. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IND292205918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061a41d4e32df0a56d33167e17ccfa99c3c91c7a326d85b4a74dad09df441085. 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/INF040400605.
Kovil (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed99c6449fd2dc2c1f3f11b7569ee98047aa1b670ab4d61a35e2d7ebf4efdce7. 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/IND292206368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc014756e2e3ef63722e058a10022ea94efe9c57bbd93d4ebb438231ba2d7db1f. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/INF049600024.
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 0xdafb4987e15b3f1e6a1e5f533a158f9ff8af38e337b818e07084ed95d882e49b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/INF040000316.
Sarasijanabha - Kambhoji - Ata Tala Varnam - Live
Malladi Brothers at Mylapore Fine Arts: Margazhi 2019 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4849c5a300f75cdfe55d48facd332011b3921c21dfe4c2ab80d9490cd53968f7. 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/SEWQY2000601.
Ellame En Rasathan (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b411650443c3a6437c1fa48e70c2061c39da04854cec2975776391e30370bad. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/IND292204136.