Wouterus Jacobus Antonius "Björn" van der Doelen (born 24 August 1976) is a Dutch former professional footballer who played as a midfielder. Club career Van der Doelen was born in Goirle, Netherlands
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 0xf634b0b5ff1f76dbca99b17935f0f79385f2d1b057dc21f1a0770bd783a05c04. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f58db853-007b-40d3-8542-0e07f801a8ef.json and https://artists.proofprofile.net/proofs/artist/f58db853-007b-40d3-8542-0e07f801a8ef.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeda75d5fb7b284e777ac4a3dd6d1f8aa7a39d19a7c391f2eff38597d076fbf. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:45Z), 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/NLG091299991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8824b374a6678d3aec95b80d9d286dcb313f3c657859695dd33c7c1c69fc636a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLKF41400002.
De Cowboy, De Outlaw, De Sheriff en De Hoer
Eerwaarde Vader Zegen Mij Want Ik Heb Gezondigd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afb528278950935a0b5334ce41fab4add833289dfae3ee611c883fb8d483c73. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NLFK41900001.