3form Free Knowledge Exchange is one of the earliest examples of human-based computation and human-based genetic algorithm.Kosorukoff (1998) Alex Kosorukoff, Free Knowledge Exchange, human-based genet
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 0x6f82c1e2c6a73bff801b5292eaa43dd1bf4ca1339f026f37b5ea9ec95cb9624f. 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/6407197d-16db-49e7-a12d-e4e91f8f134e.json and https://artists.proofprofile.net/proofs/artist/6407197d-16db-49e7-a12d-e4e91f8f134e.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 0x6e3bcdcd7dfc72be04674af9a5314230033a2294bea80820edae827ba184363f. 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/NLRD52304328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea8767b3d1421984c12bc48b6887471a52c009160efcdada687ad18b68c89d1. 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/NLRD52119527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b22cad8297ca6ee294dd7e3985b5929d92a8886d1359b5b9ac9daba35c5358d. 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/NLRD52416713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6e3f27d78f23edb5cfbbd461f5132f593dd335b1a20307acc2644c3345e15e. 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/NLRD52332930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb978fdae43f2d1aea6c857611c2699e1984dd3c59e8e3d9f6b7d3f172a413dec. 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/NLRD52332904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17f1fae31295e351b76e308939488741fa82a8c786150a0e3ef5b4b15aaa1ba. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLRD52119564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e1b0cdce5bc2ea9e639f5ae77c51e09b750549b6ef9443e8baf22d18ccd65f. 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/CA5KR2214769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4bb60b0b0af22a71842348b3c438a19b5be325b8f2e64f5e45b5cc66e938d3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CH7812194518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a83f79476fc9c3b4735ca9a31dec402eb372effcaee2064666a678e58bc1c1f. 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/CA5KR2085239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41476262cbe9705c182f3bc950dc074378095ac1559607f73e497426c1a7bec9. 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/CA5KR2124192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa81fa7828295ef675826aba39bfbda55ea0801cccd29d439c70f10483d1143. 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/NLRD52024126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bedaa0a836df067c7a2f98df0cba5ef4210c6de40e32a871074e574b84b77f7. 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/NLRD52024101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c184e7fc1fa56681fd297dc25a2fe2651a03e2bf3cd77234d7ffa8415c9ad7. 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/NLRD52416880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faf56b35b6ba2dde4426e2e094180a03700d6b30feae7b56b797904bbae3932. 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/NLRD52416802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0357343dbbff3a04761c97d329f1116ec263c36c85510ac549401c728c6906e2. 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/NLRD52416881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ca86bfb3ca891fa94aa21011598e7dc3cd0770a4716cafd95692eac86c03bb. 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/NLRD52416882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe053b2c1d238ae1ba7a74b495c2c1b7c79983daa57f3869d70b882d835e0e44a. 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/DEPI82454408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb07bd0e728d8a6656c294bf22321b37e76d3f78e3af530cae753c6834b03193. 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/NLRD52416884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c974edf3338d32aae629151fc36c7480ee3d746d9b0ddf5c6c10676b650ef6. 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/DEPI82451785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da527b940b35d34468a2573be018db3638a12b299603ef3a3167c8f765fdc72. 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/NLRD52416885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a308ed993b8e76d6353cb4cbe06cb5eeb6ac4d2f59a0749442f4bd1de5f571. 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/NLRD52416886.