N,N-Diethyl-meta-toluamide, also called diethyltoluamide or DEET (, from DET, the initials of di- + ethyl + toluamide), is the oldest, one of the most effective, and most common active ingredients in
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 0x6b374b3b1fa5dd065ec02c3a884668bc25f85369a243359c14294186ec4d91f5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9c03295-5a52-4c72-bc65-d3c21a9d4758.json and https://artists.proofprofile.net/proofs/artist/d9c03295-5a52-4c72-bc65-d3c21a9d4758.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 0xc121d2541f53b4caff905663c634d2256d320f898d25cf1e97dc703d1540abef. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:28Z), 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/QZK6J2200475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86524aef0a488e1d1aa4eec0c85f07986268c1dfd184825caa40eaafb69fee54. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZK6Q2332428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87350884d60ea9b36b3ff5fdf8d8f4eedf970a2f0369bb142fe947ae2e5caa15. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWY2333321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28aaeaf6a5218da1ec10cab738fcc1da5e7a1003e9a1d6ac7e94a3d76f57f79. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:45Z), 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/QZWFE2395928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6cc54909b60ecc45044542aae1d3b5d68d14f7fc91b5b6d8895eb75c28b001. 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/QZTAS2402479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3685aa2698fd5bd7c1ea74667fe19873c6eec70d3e2e01312d16901f4d7e04e5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:43:44Z), 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/QZWFW2432227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc8fc3be88ac531db3a5c0523eaeaefe90e5c06ad5c3df36718bc05baf3597a. 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/QZFZ42508968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb23a4000d3d03b9c4a45a085ed94d71f74d5d22a0131e342dba577cd5d52308. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:56:45Z), 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/QZES52585984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee13efc85b1983472c9cc31db4dcb3441da917dcd6adca247f51d7262a47205. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB92548514.
nico's nextbots vol. 3 (original soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1a03092d5158da7918eb49c6dcc636656cc7d1e29f7e265f9db9bb7bebf54b. 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/QZTB52334125.
nico's nextbots vol. 1 (original soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9809e15eeff2063b4dcaed123ced66040879a8e7b45bbcbecabc617f2072b4c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEN2278049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2958f44f870b5896f408e29e1ef8874db1a058f88f9d0e82e232d3b2c80f7d94. 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/QZFZ72424727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22fa3ee16dd1bc552a33a9ba3ea61c4f5868dbec0739daed6cc5a56a4e7c863. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6K2258412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b83664b859de89f159fa1382d69edfcdbcbeae5641f2a42c8e1e1cce354266. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWY2158632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbc1fda129a16dfee28115bc0f094d6c2462776fdc8fd3c626ba56266d40aba. 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/QZFYY2234168.