upright=1.3|thumb|The Dreadnought hoaxers in Abyssinian regalia; the bearded figure on the far left is the writer Virginia Woolf. A hoax (: hoaxes) is a widely publicised falsehood created to deceive
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 0x58ed70969ca512289a9a8e2f2e3be915ad9ab8dd68fd44fc668b88e88aa0cb1b. 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/52e5a570-aa53-4291-93b7-728db7afacc1.json and https://artists.proofprofile.net/proofs/artist/52e5a570-aa53-4291-93b7-728db7afacc1.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 0xae9cc8a76d1fc54f31d3b1fb9cdde7ca6953d01c2a4e052108948a1062947418. 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/TCADC1739414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698ecd4beea722b1210898cf4f90c9a80cb8ac7c3df93fb4bdaf0878e2ae769. 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/TCADC1739424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26465a914390a946c1ee14c5cef1163b489b432f8f94e1d59d1cf2f74d8e91e5. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/TCADC1739426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d8741116ccedcbea08a5a7a6ecb3bdfe537fd7a0168df752ac4bca61f86e07. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCADH1707327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8351653036d7009cc7af231dd346508e36b22a426fd46a93ec95ecc385bc1f0d. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/TCADH1707328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bec17bf6d0f00ef3387eead232ab9b2c41a5ce04aa436703e994611b379103a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZMEM2214486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96314e5badda4b037515887931531cc7bbf6e8b8b46f8145eee935de0c110e5e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/US23A1558060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26477e1730b9c635fc8345dec3d4c0a2bfe328112a47bff68553482da8fcf434. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/US23A1558062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0d7b81447a964a066720abc43883afd50bba3da6d92142a4f402b819990668. 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/USANG2276145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1df70a852c5434cf172586055cdcf6c61b4f769c674c726bfeba038a2c9713a. 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/QM3DF2205952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbd20577625bfbbcc11929c57fcaf0c3f5a730eb74edd9e934f2aae1689a8fa. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM3DF2205969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210ddac867891f1dda2bf408c885395087148c44a9a921c4b48697771ac67d7a. 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/QM3DF2205972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e47f92a9d8dcec9d87e105bd5a82f526f20f2c6113d7633741016a974e07f0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM3DF2273723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2fe14bf7774a9030734e2a07d1e3cded9f1dfe600799a9a7a90caeb8441e98. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/US3DF2431517.