DK (or variants) may refer to: In arts and entertainment Film and television DK (film), a 2015 Indian film Derek "DK" Kitson, a character in the television series Third Watch, played by Derek Kelly
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 0x5b04d0f240dd0081c18d9dca4395e6166e8dfa069c5bdd95350bb5e1be3fa5ec. 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/9b8fa20d-4006-4d4a-af6f-76f960840f3f.json and https://artists.proofprofile.net/proofs/artist/9b8fa20d-4006-4d4a-af6f-76f960840f3f.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 0x08dbde659e8788b709d88b1a9490fd0b5aacded3fbe791df383ceb0de8714694. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/KRA340928249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c5180517666c16d5e33ecf9c1e87e366c8d605f9b748ad3660f809b7d12053. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/KRZ291804738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe0ead545bacf8d6e8c8f8e2d2211c2c14a44538e6d6f4ba94e38ece6b0c6a5. 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/KRZ291804742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83a1290b22943e774bfff716c7c6ff9e98b98af23a37e25f69d68abf3076202. 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/KRA381702905.
Suits, Pt. 1 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362ec5e2bae90279a95fa2a9c73ec6dbb0708e1257bd07ce2e60eb320dec0c86. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/KRA491800354.
Love Interference Season2 (Original Television Soundtrack), Pt. 8
하이에나 (Original Television Soundtrack), Pt. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e55f00e3d06e16b6041e56dfd3b869c047fc2ffb17a74f0aa65b5aca61750c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZEKE1932675.
HYENA (Original Television Soundtrack) Pt. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e55f00e3d06e16b6041e56dfd3b869c047fc2ffb17a74f0aa65b5aca61750c3. 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/QZEKE1932675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccc39de96d4c0ad32c3e1bf94ffb4967d97f5054b586196cc461c84bc428e45. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:38:59Z), 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/KRA382005355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a946d6a2c1084c7d5f45d820b7399c6c45d4b7114f41dd7db4d09c65dd4e498. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:57Z), 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/KRMIM2217188.
His Man (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01744fa47e22d1926bee91ef6dd9841bbd2fdc031b786fdfbe02e5c33b83170f. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/KRMIM2330517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1958196b9cc03b6bf528d21a3423a657b2d6bc46ff4f0a7135fcc489cc940ca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KRB472301012.
Live your own life OST Part. 4 (Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bcb18530fede7155bcf5b177503bb75265f317718ee08c6a9783b538f258ee. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/KSB012301016.
Eternity (The Last 10 Years X DK(DECEMBER))
Hug Me (Original Soundtrack from the Webtoon The Siren : Becoming the Villain's Family)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e2d8f475308eb0a887c2b703c1283cf4e112e69edcfabea15e958fd397aebf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRMIM2441803.
So you (DK(DECEMBER) X Busking Traveler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b58e3acd20ca2d1649301dc5a1481bb4360da84c4fba345a2fde9949f70bfa6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/KRB472502562.