NKS may refer to: US Spirit Airlines, ICAO code Norwegian Women's Public Health Association (Norske Kvinners Sanitetsforening) NKS Nysa, later Stal Nysa, a Polish volleyball team A New Kind of Sci
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 0xd59320121c3732795656c0bda36d72d459e9800c9618e77db8dd11bf4e1f6c7c. 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/a89e1287-0c99-4b7c-a743-2976f583096b.json and https://artists.proofprofile.net/proofs/artist/a89e1287-0c99-4b7c-a743-2976f583096b.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 0x1a5d152574f328f021ec2934bee0ffe53e8af8b0fb7f838af35ce63bd796de1d. 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/HUA611501805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bbbda21a2278d194c9a617ef41e1086adcf79138ae12ae9212fe3af25ea4ed. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/HUA611501808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7facde1cc5490453977895ceda71d6e325ddbacd1e55ab8a4b86942c8611038. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/HUA611501809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b89437a0739a74556b78efd8f8e1b18118c33bbbf72f291c9b9f8a3990ebfbe. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUA611501810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cde853bab871ec6bc30b669ddf6865abe9d530c2a2afe372a991c8ccc06988. 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/HUA611501816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa016b8b8f26df11fa49ae616d823e88da2cabf4f9b971e2015429518fec1dc23. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/HUA611501820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c438e95264b8357ba47a8ea40d40177b01fd09dc36906c6026c9db613ed1d9. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/HUA831000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff895a82c6794c2ddbec5f17ce9686ba36720858ca43faf9901a0c0e7de916c2. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/HUA831000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87dc56303a03ef374a50dd5c4d844704df5ae36103e9c07fbd115bd3489122d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HUA831000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6a9af3b6237499fb879588876a9cce2ed6b03650ad8fd5474614796def1e92. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/HUA831000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8606fa879a58c24876124b35a0ca4b28e56b141f33776fe961cfea43d3f620e6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/HUA831000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2a6e0ddc3d117eaa96b806a80be5ff56a4fef44bcd4ed84df0fb8ee5a983e6. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/HUA831000318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ea15681243fea55101416e52b869ff5256d906399ca60d535b7f4a3c574da6. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T05:21:06Z), 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/HUA831000319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36017bfa0eccc2996ccbc16210b0a9f4f3f68b88aeb972c76733614b60fc10a. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/HUA611903027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5783cd0f299b891847bdb7c55560f713692891416b7e716ba87855a2983345. 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/HUA611903031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d22761847155d4ea0ad21b7ec4e7a21e996189632a8d6cf2fa7c4dc47cbf071. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HUA611903032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefd0552f2bb582586950d4cf8c0aa6ff0461ee73501a0ffb9a2e7fa6d9498fc. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/HUA611903034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9314c045aeb91f9d1d14a84a512da134dcdac11ae5b43ff2dd1bf3354fd77a6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/HUA611903038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e42c854c0eccfe4949cec30d5f178d891f221db0ff0947582785deff7000ec. 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/HUA611903040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99747f802164567465a5b40650ed8bf0550090d1d8ac4e2e241fdf852afb3a04. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HUA611903042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756a9f7fd77baa9464aef08db45029a5d6ea7edd9b4c0eb787e7faebea60e168. 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/HUA611903043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e487eac72aa228fc4fddb495847b80b8898ff270ed76cf32fec7c4c0e02786e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HUA612201433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210b92fd1dd8838b7fbdef6b4251fd80b256db803d62b0a96f8a77189fe3fad2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/HUA612304088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ecff8342ae13653fdd0372f30582fb613b96ea6cd73ae17c0de1f71464dbe8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/HUA612401557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c745f801c9b6cb266b1870fcb07fe716be3754917babddba458a839056ae21. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/HUB161113105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf9a1325d2caa7d2ac094b3f072b697a29bba11d33bc462f93ae77db003144e. 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/FRX201834489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b64cc5a75b621ea41ad2d6cbedc3bf89cac076f53e9ab378e8579166175e7d5. 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/FRX201834493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d5437278e6b093574c71b0f3680537deb814c0c93cb84c26e1b30924f469e. 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/HUA612401754.