Willemijn is a Dutch feminine given name. The name originated as a feminine form of the masculine Willem, which is the Dutch version of the Germanic name Wilhelm. Wilhelm can be literally translated a
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 0xb718a6338ca92a5011f6555a0e084edd9258c135951968d7d104f311f1f51c57. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/063e267a-aabc-46b0-a1d8-b81c4c08a62b.json and https://artists.proofprofile.net/proofs/artist/063e267a-aabc-46b0-a1d8-b81c4c08a62b.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 0x86e0dfc0a456abcae889f9d80092dfd8a8dd40e3b87e8e3b37d2b86a18ec9839. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:00Z), 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/NLA521503923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cecfcb4fb6e0e4b144aac491b7dc32ed3439005e420d189dd3835b545da0798. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLA521503926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e07409d1be489ae2d72d69f519b361c65e11d5f6c3d113b5fd3c3bea863977. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLA521503932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf987227a72c5d0298c98735f6d53a76d90b1b7ad89c6ef2cf2c2e3021e614234. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/NLA521503979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823c4f65e8ae97eef2aea6586a80a4ddd830c9f90830864ec697e4ae9f7ab47d. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/NLA521503943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34bc26f6cead4b4486b084ebc165b436218898138dc6839c93132d97cd5083c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/NLA521503946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1f761da93008703add0f4db4cca0fd8b2750d13b850062448f207da5e3bcaa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLA521503957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf233608a22b8bb7318a41e945842a400ae8296036ed871b89304d36cb5b5f071. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/NLA521503965.