Nikhil Kalimireddy, known professionally as Kalmi, is an Indian music producer and DJ based in Hyderabad. He is perhaps best known for his song "Big Dawgs" with rapper Hanumankind. It entered the Bill
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 0xca9cb99a0d86a0f43f912d8c0574bbdc4881b78fe65aea9f37a5a849482163a6. 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/6c4b1f7e-d9c6-465b-ae79-aa36065ac95d.json and https://artists.proofprofile.net/proofs/artist/6c4b1f7e-d9c6-465b-ae79-aa36065ac95d.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 0xf4bc0314282db8acbbe8095e7cda12ed33c77df497f90e501fc021d6fbb07b22. 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/INUM72400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c9a983022bd304771d510e00362febcec308dcb47979a8d4aef5ea387721ae. 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/CA5KR2091904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddb3769be8437fbeb04da93afb9088fca8d347585394519c044e2ac3956960d. 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/CA5KR2091905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120f4b40c919aa176bcce2f76c38783f1f837769957b5ad201cdcd301a484c77. 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/CA5KR2091906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a490f4d9db828f1c9554b2966259257ecb7bdfc5dd112302f87428309f64ccf. 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/CA5KR2091907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdda06455da63ae0c4cab85795e6906e67794c2857174676489fe2f4a715e0b. 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/USUM72414036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bc0314282db8acbbe8095e7cda12ed33c77df497f90e501fc021d6fbb07b22. 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/INUM72400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bc0314282db8acbbe8095e7cda12ed33c77df497f90e501fc021d6fbb07b22. 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/INUM72400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bc0314282db8acbbe8095e7cda12ed33c77df497f90e501fc021d6fbb07b22. 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/INUM72400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c86cc73e61ca3ebaa3490a79d3c204d8cb9304b559e764d1f86d8ef24c8ee97. 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/INUM72401566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6895843414a2b87bd3a35c49eb8eea8cfaa3441ad691a30a01fdbcde698e3b. 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/CA5KR2203988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb87ffd548766e7ee59b9e61f606476db777dba5292c9e9bea112c25c42a3c11. 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/INUM72400934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bc0314282db8acbbe8095e7cda12ed33c77df497f90e501fc021d6fbb07b22. 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/INUM72400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bc0314282db8acbbe8095e7cda12ed33c77df497f90e501fc021d6fbb07b22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INUM72400563.
New Beginnings (From "the First Two Years")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6828253f3934a36f2ab4af969e8db18d8af303dd33af74a3490d9a56abe35a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USY242479689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc241beba979fedebc5d9086bf8785063485116156186e1aaec150b9b392055a1. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/FRX872318409.
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 0x220665a7306089126c824676238ded1d3a299096fa7555fc6c3e8e120157787a. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/FRX202032611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a64c24028ce1923c2010c26d47da6bca4223d9b6b0cbbf012df6d812588b0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBWUL2053316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd660988a7dee40b0f183c10016994b90118e06a88675e43e58dd72cba02ca0da. 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/USY242479690.