Kuldeep Singh Kang (10 December 1940 – 22 October 2020), better known as K. Deep, was an Indian singer of Punjabi-language folk songs and duets. He sang most of the duets with his wife, singer Jagmoha
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 0xa9d99c4070b4ab5db32efca6c02870d60e177a860130fbad029e8cdffa0ba822. 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/7b3c04d8-62b5-4ec5-9ac0-8d622f980e94.json and https://artists.proofprofile.net/proofs/artist/7b3c04d8-62b5-4ec5-9ac0-8d622f980e94.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 0x6419b8fe68d263f1c17f42d2ed69b97203772cb6a3c356f51a705e4da5c70539. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/INS188711258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5bfa45e1d4d074de1ef21e130650f19ca4cdf6e4d6594b26541e0ab4b708dc. 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/INS188711262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65445624a674403f0210290c8dd82f1ea5885b6dce4b7a8852b81a81101550de. 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/INH100394880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e84643b36d708464d90fdab11542dac0513d13d567bc0fa015b772e3f6d1f9. 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/INH100394970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcb23230d09a6f66bb3eb6f3438b2dbfc601554a61e3d5400cf308649119e34. 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/INH100495020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28d2b3e649013ca1f2854b2c035842ff1ac79652b72cd35346b1a918a47d7b2. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/INH100495060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3542a46d1f64e09f5648160c81fa261e32cf1781ebeabdba1f56f62b00b599b6. 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/INH100495110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa991e4abe228fc5d44c37e352bac303638f2f927d589fa2251c428f6e6f235da. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/INH100510279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68ffea9e38ad541255bcc7754a2f1aff5681778d18c8ed92ce9782289653642. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/INH100800490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2199a653a28a8815e8b362b6314091d5e2dd6764db8119603654af50f8c326a2. 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/INS189824569.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28d2b3e649013ca1f2854b2c035842ff1ac79652b72cd35346b1a918a47d7b2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/INH100495060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e84643b36d708464d90fdab11542dac0513d13d567bc0fa015b772e3f6d1f9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INH100394970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68ffea9e38ad541255bcc7754a2f1aff5681778d18c8ed92ce9782289653642. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/INH100800490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba7a79ea62733a0b9c66eedfad46da712e2505ff300fffe00b015800aa3c47f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/INH100394820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478e71553bbfd0ca16a1618b31519c5b56b36575b53e8e211dc061cd34271fd4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/INH100394840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2b056487cdf67790fb0bb1be1b10fd9ef0eb73cc70d95e0e34e8cfe2b616c5. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/INH100395070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730d61e5e2b802350d2a6a8545322b18540cfa117784882498dbc6f58c792075. 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/INH100431900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d2e0e197766fc2d9b04c66f842effcd196bcf2e7c17b5c17e6695b1df2b892. 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/INH100431920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b835ff9155c3fefbe067d956efdcf3bd0b574c8f9c59937f213004a638e1f27. 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/INH100495050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880d1f1ae3b07c0d57f71981e8efb3cfde8d146bdce08098125bded16734f2ad. 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/INH100495140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478e71553bbfd0ca16a1618b31519c5b56b36575b53e8e211dc061cd34271fd4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/INH100394840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2b056487cdf67790fb0bb1be1b10fd9ef0eb73cc70d95e0e34e8cfe2b616c5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/INH100395070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f04f5c4400ea3efde94ef7d816c5333b3eaf806809c4aaedebba890415126a. 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/GB3SA1000227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaba21c6a24e4091df059707e845304ba385df292d27d06264a6aa08947be1aa. 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/INH100399380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8825c980b90c118f017677d6ca2cd4f361320fab734116ceceb5f361d2baec21. 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/INH100495030.