Gummadi Vittal Rao (31 January 1949 – 6 August 2023), known as Gaddar, was an Indian poet, singer, and communist revolutionary. Gaddar was active in the Naxalite–Maoist insurgency, as well as the move
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 0x1cfd3aab0cd4b8b465494ddc35cf1b235dd0616227b0882147c4d63019a6f896. 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/6ff82a79-0ab6-423e-a0f1-7fedd8156ae7.json and https://artists.proofprofile.net/proofs/artist/6ff82a79-0ab6-423e-a0f1-7fedd8156ae7.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 0xf6875687b47072129c84519162debd763ba42d817aab3a5675fb9634238f3b6d. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/INS182402131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6879b38973a7f8a156999053c82a7ef39ad63f3becca326380d1240953a1caba. 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/INA091012720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4825782802b5d0fe48ed33fb9b7d79ac34abf3598c9f8dea8832fc2cc3c1494a. 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/INA091012721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8e8f6756331deff9c22c4086d9040ae4f8a2615a6d3e50b6a7e18f67971d5c. 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/INA091012722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d956b5f2bdd7c32d080cb935020def47323a3c967351eaab25c6d29aaa3fea5. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/INA091012723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0dad3a5382a0046fb80a3ffc9b17c2c942461706c1e31174ddd025cc270cfb. 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/INA091012724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1effdb4294c572116c09c07bc6a8686387bc22c1d527f32b9852ca9ffeedffcb. 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/INA091012725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b8d86899b08519a17dc03b9fd1cd3769e3da68c4dfcdfefaf11d37c48d8b1b. 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/INA091012726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35233f8049b7df39c76a11137ad0b043870f5ccac0e776ea81da83a7a1943123. 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/INA091615074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e0e2cf9ea97097aff867544a82494ca903738ecb279fd5ea46b8b85bf3fe3e. 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/INA091615075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16b396a18b431eb6537f2f2b337929428c44081b0f9ebdcc1372385a91fa93d. 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/INA091615077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4c9ab5778ac13ce85d61ff17120399bb9775774bea3aaa261c49cc4dd40a9a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/INA091615079.
Maa Bhoomi (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5485e6aef7821105fae5666a27be3d63cd25bb5bce1cad92017e084393d19ad. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/INA090930633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7469f1d8ca5190845db8d15c2c1a07437ce5230497dba4e5c921f5fcaf7d37cd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/INM5B2208585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26caf7533632708a48f618085efd3e1603ddfa04f4e38d79d85c0f8a85a33855. 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/INM5B2208586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1410c6239ba757825127b19807a556685b65f3bb47c13281db153f84f4387f. 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/INM5B2208591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafdf93aaf102e67dd823f378e383ee7ec0beecf485a6c552aaf27d41499dcd9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/INM5B2208604.
Rangula Kala (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39415c3b32b9738b290ec85d167bcd5d41a7a9079704a5ba6fcfbb0731c1735d. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/INA091815773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2836a66cf69d21f57a05c6d56f4831986e677c968d1234b938ed95c236de60b. 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/INA091815776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75f135f31e55d389ea4deb44b0919b48c47220576cac79efde2190c94bc5d91. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/INM5B2208939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce130510472a8c051bb867166c23ba8abb4a1c3b6f37b6646d5a16557e197797. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/INS231476347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e363ef82ab6269020ad9ee85ee4dff6e49a3c8d75c16ecc034544c82479eb88. 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/INO412500001.