KD and variants may refer to: Businesses and organizations Transportation KD Avia, a former Russian airline (IATA code KD) KD Transportation Group, a South Korean bus company Kalstar Aviation (IAT
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 0xe42b21f2b2e410e88538d4fb0ce67269b6798f6d37361ff406a90abe293efead. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f3d41d4-cb61-4cf1-b4fe-ca8e28aa5f4a.json and https://artists.proofprofile.net/proofs/artist/0f3d41d4-cb61-4cf1-b4fe-ca8e28aa5f4a.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 0x3da8b2ada45a7d62973dd656d4fec04ecf7f58dd5c282664bd3b10bf8fa848c3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEQ121855744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7308e3b18527280cb4b403390e7cc820e3bf59f4d7a74213d8200761347fdb32. 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/DEQ121855746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eed4c939f7ca4c06fbc392fc0cb0a837364f342e75486ccf192ccb2b8c0a2d8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEQ121855750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0e30ccad074bd0113965f98127803e1c1bd9e3cf2c36fd5f72f97e4f6c4b0e. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/INM432100709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2457a520524bf765afc1ea610b425fbe0d2a7836a3186d65f981de84627839ca. 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/TCADP1834692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad3e05020753583553d173a2be0415c03b80569e129dd085c7aaace5646f200. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USQY51487981.
Give Your Life to God: The Best of David Bouknight and Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab28d60aff21b18250838d7640f6359d180b1a9f0315ec23fec8b38bb212f10. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM92208242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d71612188bfee508ab80d3bd88494673eb193076a8faa9e458f416b8c796389. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHM92208243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9341eb9b858b426826c9b9930cc002dae9fdc03a38942d0ded2b5fce99b1872. 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/USHM92208244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3bf52a5a95d5293eb9cffe99c588958a8cb5fdf3651817e35dd8468e618a15. 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/USHM92208245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc9104ab5145209affe71758de44d0692842b16162a6d4134b048a0a5b16292. 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/USHM92208246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad3a33426a0d7676a1984b686815709bfae9c3c4c0f122c4a2623a7ca9efef2. 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/USHM92208247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e973b05a77396bfef161542ace1b825d5d32d83feaa8e644d2dd35fdd87e889. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM92208248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a23f5c5f8878450894ade9218959b857fe20434af11330cda5818bb29be6a55. 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/USHM92208249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cd0b2aaaf0f4a6e197382247475453fa1c7b63c151c5013729a3ed619ef053. 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/GBY711200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fabaaef185cd4ff50c1f097e1438d3041795d5b33609922bcc5f9e5cfdcbf4. 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/GBY711200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5b99b73b9998ad6f4720bd64c41a5bee75b1c981c295e6c79001e034146678. 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/GBY711200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4933725bc6365ac869e279a776871bb283f3a09a94b2bb1dde02056b77faa70. 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/GBY711200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2a6fbba46ae97ed1f5772e03cb775f98a7d69ed9bac6acf325579a2a1eb91c. 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/GBY711200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf19c6aae1937b8f2fc5a864ec50f7e7db12192b82aa8ec4438ca629358ecf97. 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/GBY711200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932894d9d3772032371eff3dc7f0977b86edf3cf067f8798e1e1bf136881dd24. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBY711200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b4961e15705b6d94c630c47316291e0452dc07f97faf98f1391f55629b2f44. 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/GBY711200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0846d60a7705f69e29c64634721504eaf964ee82159cfe408d545b94470fbfe. 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/GBY711200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b0df2264aa4e5cb0e78bb6e5169accc76fda96b4658b46c97c8f32f87dab16. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBY711200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265477b073f751b89981ed2c04cd6fa22c51e8e5526b1c6ba3fc2094ec6a05c2. 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/GBY711200028.