K, or k, is the eleventh letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is kay (pronounc
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 0xf32d0ab31fc560c1ff166a3be326a2e4c87e0dd8929ccf73680a06b18fe3a5e8. 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/a507eb71-aa3e-42b1-92a2-d3b15491a7f2.json and https://artists.proofprofile.net/proofs/artist/a507eb71-aa3e-42b1-92a2-d3b15491a7f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yuddham Sei (Original Motion Picture Soundtrack)
Mask (Original Motion Picture Soundtrack)
Aarohanam (Original Motion Picture Soundtrack)
Annayum Rasoolum (Original Motion Picture Soundtrack)
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 0x97dfc21f43c9487daae3f10056548c2aa90552d6ae513e7529ba5b83a2372cb5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INM201202164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adc5372d36882075e1c2a6eb84634e75343da6a927fcc470502bd51845a3898. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/INM201202165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e27e48748509411e190255394cda4890c5b62be46b1e612c6ac17d0b735fbfe. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/INA091213532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6105fb147d1d69e7f80c99f7f1ccd2303e561176dd8ae067b31291215691f4e8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/INA091213534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f256b9a59b6243e067d284583e36add7daf027d000b6a1ef29a298eceeda3cd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INA091213535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d6f8fb30110f4107918ae76bdb270c526812a50baf230dd629daf522e5ce5. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/INA091213539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247160c9ac9043edfb21e383437a916ac51c40d965e1eb3ec207f37c9c25b720. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/INA091213542.
49-O (Original Motion Picture Soundtrack)
Mahabalipuram (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460452b701a3d763dcb72ab528a834681243234c1d62b33a51ae71569840182f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/INH101401548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460452b701a3d763dcb72ab528a834681243234c1d62b33a51ae71569840182f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INH101401548.
Kaadu (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fe9b11fbf8114316238250e86ffd59e4a6f4eae9738681520bcf2115ca42d0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IND291400129.
Kallappadam (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfce649c7dc8abe6a4b0179164ba01dd078060db93a5caa33c26cf90283ed144. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IND291703396.
Kirumi (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dce995e704ba5b2add0ecffe3251be60c3ef200241400790367c5a5c0ea86f. 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/INT201500875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2167a1a7c1ba9ae12ea98302212ca2b5d54d4536f1070fea09daffdfc2447df2. 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/INT201500876.
Aandavan Kattalai (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875c038ab87cb9d72739ace8c640348195a727bd1f17d6088e4f0fd2229ebdc0. 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/INS171602118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871e58feb91d0bb002598712b8bc09efd8fe186c87f3e310dd4234d532d40652. 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/INS171602122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5253b1f0883b1740c1afaf44affa01caa1af413b227a737fe0f705b164e46b32. 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/INS171602125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fe102edd72621c9bcd4716f0ee7e6f72af6bce0a622164bdef5a07c4bae403. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INS171602137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30e96e9ad42ae9ab90c4e3b9ed512fecbf07e89002c62646f810a78dabb4816. 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/INS171602132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb912b1b51635b88938ae800bac3fa204314f8cee586db0dd44ada284642cea05. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/INS171602133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178a094346ac664818e365f5104f91a10a28e95ca081db3cf535f1bcaccf29d9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/INS171602134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb897e08e6cce72509e461bae96eb2d9f2606dde029edf4c5fb0b568d84b387c2. 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/INS171602135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb84df23c81420bd95ade926525c52773f74077e2111c06ca78f18d51cbe6e2. 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/INS171602136.
Ammani (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa30feabded409e2f3621901085a0b8aa0069607dfe92f9a50e5789650ee92dc. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/INS231657819.
London Babulu (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba60cd4af727e9de03cdd0a9ab420f60301713716bfea055cfcad6eaf4a7ea9. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/INH102202641.
Samara Shankham - Nee Kanulalo Kolimai Ragile Kaledoo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2051cb975def92e5e2b0fd8c46622e371c3a65acff710e036f0ad5a97ef1a324. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/INH102202645.
Panni Kutty (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf28cd102aee4d1d2d250aebf97bbf3ffc773f40b8d357e805544270f6e64a4b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IND292203574.
Karakkenne Thanichakkeettu (From "Thuramukham")
Thuramukham (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329ea6980ea7322839b04ed949d8ba1ead84683d239becd1011e27db5b95f3e9. 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/IND292215685.
Paar Illadha Vaanathil (From "Bayamariya Brammai")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25af96908a7221ddc606ceb5b2e136556729881ed58ee225b3765737de3d555. 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/INM811457884.