Daniel Dor (Hebrew: דניאל דור) is an Israeli linguist, media researcher and political activist. He is a professor in the Dan Department of Communication in Tel Aviv University. He has written extensiv
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 0x6c90cada3e6ad82864c6d5e332a2290f203c0db5e7eb9d1396911da8441b3f45. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eebdfce7-90b8-4a2c-92f2-d0d1881474cd.json and https://artists.proofprofile.net/proofs/artist/eebdfce7-90b8-4a2c-92f2-d0d1881474cd.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 0x9de4103534b1610b961da4c524f482bce52fb4464ba368e3613eae32adb4041e. 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/FR83J2200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18e56c974a6bf73c3ea8d9ce1b6b56dccc0610647b734563f184cfa4b55c079. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR83J2200230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94741f2fb16063b2508e9708ecdf9048da39081a13d776b7aa1b4d6da6472857. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR83J2200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d00701c4a33d5bced04745221a7e33572fca80ecbb0acd0489d12346a44332d. 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/FR83J2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb23de5a613a77fa1c5644ed2f2e4463f2bb71340b804bacd3d95ba59105f00. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/FR83J2200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc20093d45df23b4ec2f770c29270f819cd63723a716f6ab7fdd0708dee5270. 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/FR83J2200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d636617d111a5f19567d86109a749496294ca7c8b9e8c44b8ce013f232c86ab. 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/FR83J2200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2162af70cb49fa1eec253719650184420e709440e161abe8ed38fb9e2830a6ca. 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/FR83J2200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9e397df5e28cc10da197da44b1b2d9931b2fb2a95452f5a03bb21b72eef881. 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/FR83J2200300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ea1ac69c490591f36f15e1fed00925b184b4f785c9864a0a3f64c666017b16. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/FR83J2200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97749ac0e05815c6c61603004cc884d63dc65e585f9909dfd0c5e5cd54a835ac. 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/FR83J2200320.