Sirkazhi Govindarajan (19 January 1933 – 24 March 1988) was a Carnatic vocalist and a playback singer of Indian cinema, predominantly in Tamil cinema. He was conferred the Padma Shri award by the Gov
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 0x0220dd8236a42fa9c38794648c0deda8320d3a8a881287922d6941069e2f57e7. 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/9f7ac7a7-bf4f-4201-9086-b4641119c177.json and https://artists.proofprofile.net/proofs/artist/9f7ac7a7-bf4f-4201-9086-b4641119c177.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thirupurasundari Thenisai | திரிபுரசுந்தரி தேனிசை
Kaviya Ganangal | Sirkazhi Govindarajan Hits
தமிழ் இஸ்லாமிய பாடல்கள் | Tamil Islam Songs
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 0x5921e0b1291e4291541152bedcd0cc4505d2d3a7bc57be66490eff610351da93. 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/INH100117650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb609cda6311645165546bbfb2a014ba2fbeb68f159aa74c83d31797d0ef54c. 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/INH100507990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f2426091f40bc0fd0a773a669b183288755ba6640256fbbe816341ab8ffac6. 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/INH100507991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccd1213fbb862837ce25fbd32c6ced92b605af3542a4b4cc12c4f70e3842699. 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/INH100507996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027fd0756abebf14ce891f0ca78155dc8b62f9178abebf27220942e206ac65de. 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/INH100507999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821bda204d57b628c7326681b0e6728b58c9c9b18550309654e8221c5432433b. 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/INH100605759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16201f389be7cb34dd1aa242ecae4a69517d47231ce8dd0fcb489550d5ecf673. 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/INM6G2110665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8e78deb984a4fb702dd35063c90ae053f675dcc79601cb47c27cde3f2c3d89. 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/INH100311140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aea69dcab8db46eaecbe0985d50fdafa448ff17b1e1eab7fd7193de7326cec. 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/INH100311160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264b4a8d93a12bf0463d10557f1a0a71fc573ffb78b6cfe13dd13046c07674f. 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/INH100311230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f7d57d68d4c6596e6a170ecfdfe9485ae7dd10619cc4b9fd5943ce6eb56850. 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/INH100311240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c5af37e273e12614381111fbbf6197d58c33e6568218ea68a5dc18624c6f2. 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/INH100611966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bfe4052309279f1cf64456e0d16c3fca3c14c7fc954a2700530870a019cf3d. 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/QZK6H2494951.
Seethakalapa Senthamarai | Vinayagar Agaval
Sanjalam Theerkum Marundhu | சஞ்சலம் தீர்க்கும் மருந்து
Thirukanyaana Sambandhar Aruliya Kolaaru Padhigam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe231360b6b41de4db54df2d78a92db969ae0dec7356f24f3fed20265d01e7780. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/IND291816797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e42cdbeb6ebbc21a611178004bd3128c2f5034a5bb9fcb6bded11605df617a. 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/IND291816801.
Kandhan Karunai (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eefd7642311351bf42defa1addb634eee59baed3ce4c6f5c301e5d31d1edf8. 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/INH100308440.