Tobii Agustin (formerly known as Tobii Technology AB) is a Swedish technology company that develops and sells products for eye tracking and attention computing. History Founded in 2001, Tobii is a
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 0xe3c51302c1f40d222817a037203c35b05e21871b509ce7e2d94a2e433ec5132c. 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/971c84f0-5aca-4a0e-b531-bf555940dd82.json and https://artists.proofprofile.net/proofs/artist/971c84f0-5aca-4a0e-b531-bf555940dd82.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 0x91a774426f8cce1bfbbdf5fea0b3cfa9f414425eced6e488867fd8324193be4d. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNWS2047163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee0272fad948398c0829e3d844f8cfed4665cc07552b0db112c67d8f2ab4b22. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNWV2055542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62732ca9b2ba0339353315173ef52c7f7aea6e22660843357dea2254705d2955. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR96X2113108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ad3418a9ad23a8e2667f2571deca699b8fe5de94ae411265ad8dd3e6d80881. 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/FRX762116919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702933d8ab310aa7b2487d1780ac5bb5ce486de4d425e2ca449eda6bcbd573d5. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/FRX872190685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc649f5414b293f4b84b10f393e414593ade409cdc6b4d3b916c3eb881e233d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FRX872190914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d62914ab1d0be780f94c48e64e90f28d87d5fbc485c1c4dce55802c610a9eb. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR2X42218719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7b1faeb45c2ef56c49fe8b4b385159a1f82fd04a80684561a3e8d7d5ecbdd8. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR59R2237458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb7cd554a60d57a31552e7cfb3ce83c0bb317aff87a6b81ecb054a8bb776b32. 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/FR59R2281057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c8b8b09ee4d6e3a2e3fc7fadf765a0a1e055d40fa541825559c22f707fe83f. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FR59R2281058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe47ac0577dfcfc01c604dc473545f836dca8c1863e1a42e4ec6f76087e2bf3. 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/FR59R2281059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93dd6cb10f8f0df2ebc274f1e852f6c06726876713e590dedd68bec6ece09e7. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FRX282230366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b33b99c7027d06207cf7adbfa9056da2474459d7693bb41b74e13d13997fc1. 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/FRX282234066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89600aadf70eba7ad48b357c8450a735ad101475c54df085b2ba02abc8cd6a1e. 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/THUM72300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469db183a7725507799d67202b989d82fd20aa083147d669a3421487041fda5d. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/THUM72400049.
Saxo Love (ชุดนอนไม่ได้นอน)