Cornelis Reinier "Kees" van Kooten (; born 10 August 1941) is a Dutch comedian, television actor, and writer. He formed the duo Van Kooten & De Bie with Wim de Bie from 1972 to 1998. Biography Cornel
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 0x84d92876e8d803bf15704b93152d442858d900d06fb144e51f17550eb9b07faf. 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/7728b579-ca99-461d-a292-32773b61a0cc.json and https://artists.proofprofile.net/proofs/artist/7728b579-ca99-461d-a292-32773b61a0cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Eerste Langspeelplaat Van Het Simplisties Verbond
De Tweede Langspeelplaat Van Het Simplisties Verbond
Hengstenbal (De Derde Langspeelplaat Van Het Simplisties Verbond)
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 0x3204dc9a6e4aed4b41903819bd873583eaf19fb5e496a16217085bad6afbb65e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NLUM70500415.
Op Hun Pik Getrapt (De Vierde Langspeelplaat Van Het Simplisties Verbond)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3060b6f15811c32d3b80e676ddf8c53727cfaee37e128ddaa621d05d23516c83. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLUM70500427.
De Tegenpartij / Het Lijflied Van Alle Vrije Jongens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de27b8c735bc176dcf91715459a68d336b7ba6ad3d61f9665c80a8c593c4c35. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NLUM70500431.
Mooie Meneren (De Vijfde Langspeelplaat Van Het Simplisties Verbond)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7618d8e3163acc056610691da6f4a1e65766ea3037325be19b806ff6beb3664c. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/NLA300400269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd712539da970be398a48d59f826400da87dece81474c5651aa505456d8dea110. 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/NLA300400273.
Draaikonten (De Zesde Langspeelplaat Van Het Simplisties Verbond)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ea78703b431a33b7072a1cc1594478bb45407abdcbca280f8de24c381439d3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLA300400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bc5b4bcdc44a14e1a5f0e74c41667464965acff28fc2567981cbd23ccb6387. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NLA300400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897ef37fd468ac2930491faf273fae78efd00212ae03bdac6c7279d2968c6480. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NLA300400290.
Van Kooten & De Bie Willen Niet Dood - 13 Scènes Uit Het Volle Leven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee103fbce7bd6d97fe1038af7d9defb25c10adca10d25e496baaa30e59c3484. 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/NLA300400264.