NKI can refer to: Nathan Kline Institute for Psychiatric Research Early name for Nash Metropolitan Nederlands Kanker Instituut, Dutch Cancer research institute The IATA code for Naukati Bay Seaplane B
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 0xcb9ac9b33158663c60a636f57d9c1545634cfe22422275ad73d4e48c942aabdc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/489db193-1cfe-45d1-a073-cf0331be75b2.json and https://artists.proofprofile.net/proofs/artist/489db193-1cfe-45d1-a073-cf0331be75b2.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 0x2340678bd739c6acdb3aea2b90f2f61eb207e0a738affd70c0cd6e3aa4cf15ef. 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/FRX282394218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f8d89228f3a74489c7f52c1ed04917cddb9ce5c737eba77ffaae4f43f3a34. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA082275361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7105323cd0fed1fb3914ce9673751944c1e0d06939e45beba6f6fa4a3f708850. 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/DGA052208870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259e8426b507c36678c4cc6d94177505216ef96203eb3e51c869c4f12273e073. 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/FR59R2206234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d394b0342d1072fa167993e16e4a92527e9a9194d36476881b43ebe448033b. 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/FR2X42298345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c5893a7cd8bc7e577624f0bcb20da29d139c60045348364f4b14dcf944db20. 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/FR10S2242377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2e0838f57616eb06cddaa16dc123a90a6909eed07caf24a244311f9726cd49. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX872165198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db62020de64e5a993c6da85c4d635ff5544031a4cefdbdffc1ab3033bd22b2. 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/FRX762132049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8292994c129a5b23dcce2e3bd297cbf107353165e79b612ea0f09ee391693ea2. 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/FR59R2150034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eb8f01523422efa599154c8076c073b146b176bd07f81fad8af6f9cc383f36. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R2112532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf506abb37124de49e64590e0c39595d9714ace8ec19c06e716439ef55815b85f. 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/FR59R2150037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eb8f01523422efa599154c8076c073b146b176bd07f81fad8af6f9cc383f36. 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/FR59R2112532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fe2174a7cdfb614b7c087855f6301c94dc30e63a67287e4b3ebd9f8fffe62d. 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/DGA072182898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fcabbc1f6da91a11ccd7ac76a30b06012c3343cc36446d032a0f3f51396b76. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA072174952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9e4f39be7ecd9b402d26fd15fd5b762243776127828bed0ef7d162335d0652. 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/FRS182097454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109bee1ecc140803f6ad6351a16884b29933ea5c03cdb5a32b8fdfe51fd373c4. 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/FRX872027506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6645940688e59559b083c1a42eb26794bc96a8f0e9acb69bd5222e8edcf6c9. 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/FRS182097456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fd4c86fb9339bc43b7c86c735db0816ab80f86c04f5000ad397b5b8e5d3361. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRS182097457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109bee1ecc140803f6ad6351a16884b29933ea5c03cdb5a32b8fdfe51fd373c4. 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/FRX872027506.