KK, K.K., kK, k.k., or other sequences of two k's with or without punctuation may refer to: Arts and media KK, the production code for the 1967 Doctor Who serial The Faceless Ones "KK" (song), a 201
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 0xe9171fabd4c1eb07103ae1b0b0fc5023aa22ca85b3dca0021fe733cc73f4f5de. 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/a70254d7-442f-49e4-b594-5e07fb187196.json and https://artists.proofprofile.net/proofs/artist/a70254d7-442f-49e4-b594-5e07fb187196.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 0x97a460232988b8229ddf9b33cb95463658c6fe195a6f56978d361c1d6c2dcbd9. 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/INS179900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528e59bb4186d502f454d881340e92c8b77d3f6b43f1e3776f31209068fde1a. 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/INS181303036.
Jhankaar Beats (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc6f09f8920fc03c72c0773a6966d5a05a65a50026edbbbfa4291b575829ca3. 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/INS171600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf10e61202ebca7287b834ac491a3c0ec61b7c54cd289c85faee184647f966. 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/INA090710907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc8a2367b99298a7b6e7d40168de669d883bb40ddab7bb2d434f9252864f564. 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/INS180602909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78043308dca8d04bbb874c33fbca47141a18ae8c73a55a66bf9839c60d164e53. 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/INN130300024.
Zindagi Tere Naam (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce0c3dc7a69f4018a1d78d76455299208da097320147b2dad05db6b506a2a21. 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/INV110800268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ed4db4b68f96f24dd83f01764f1a942239046ff2e37f6a3f197be93ae907fb. 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/INY091400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353e01b751ed0b3d347fbc29769472296b5264d495e60740235510b034aaca2c. 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/INS180351251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4970bb06402e75dd16785f2ed21faa0bcb098efb883e74fe46b8782aeb4b143b. 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/INA090932131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb949b4b36e363e2f1098deda5a7f01909eaf1672b1e8f704642e72561cdfa3. 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/INS180500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b9b79b815e3bed443648792878ad6e81d8611cb44c810c84e80618d56bf4b0. 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/INS180351252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aad72b011bcd0cc4a915e0a33af973442c9893864aae0919dd10d9f410a2cbe. 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/INS180351254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0ec8004c7a3937d3a74e6930313bfe530ccf9565efacfdefc0fb33df97808f. 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/INY090800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7a5f482e7444f9999bd24c20589b1b5893f821e808973c29e1603da7a2c839. 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/INS182202775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc91c37b6d2cdcedc443ad09ebc232ec1cb3b60fa6f4e3ec56a0051743464302. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/INS180500179.