Louisa Johanna Theodora "Wieteke" van Dort (16 May 1943 – 15 July 2024) was a Surabaya-born Javindo actress, comedian, singer, writer and artist. On 29 April 1999, Queen Beatrix appointed her Knight o
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 0xc21e8c310514402687091a0adeee642b13a6e67b90131c3eeb8404e0e63bd714. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46ab1f5c-344d-45ab-9d3a-c9551ccd5452.json and https://artists.proofprofile.net/proofs/artist/46ab1f5c-344d-45ab-9d3a-c9551ccd5452.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 0x6e60b20022d663b42bf914731de897b53828957ab3d24c50838a41869618d2ac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLA307500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ee341180e19dcf526cbceb449a819db765a61901b2c759e8a5230e27d8bce. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLA307800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0a53e86e39acc2cbb26e777485e7d507dfb8ea37fbde6e5220d04dfe6247fe. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/NLA307800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e12ba117df78939dc67ca75b8a591340b113cf43ccdfc7f5b8103548a2933. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/NLA307900039.
Si Willem Nijholt Komt Binnen - Live 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffe1f2fa8dc702c578a7e7194e9526c840babea968e95355db9503e86a0b28a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLA308100125.
Mevrouw De Gunst In De Ban Van De Zwarte Kunst - Live 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98464a76f6b0669725ea506003f26df04812c325262a3ca891646fb6c67ebc78. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLA308100137.
Jalan Kenangan - Live At The Wisseloord Studios, Hilversum / 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3adfb8abef02538ed14a08fad903a063daa30cef556de91253fc260389e957. 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/NLA308100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243e1b935caf48300595a98c0cfedb543d3d59acb09316d9ade3fe44571b0d55. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLA308100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf467be19b4049949c916f1ef2fc710d611f6f51e7ee21057801de06f6ec7bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLA308100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac9ba13d50fcd7b76f264cbebf0db84a2c9877086d8aefaef007af7ddc2f9b7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLA308100128.
Ajo Tidur - Live At The Wisseloord Studios, Hilversum / 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f3e6dab5b7396775789509b97ffe03223700d2b4c0c495b019227ee8366fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA308100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3234f3a6c157254a0d992f43066cd3e70329dbb608db00c649290d9bf8457ed3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLA308100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fd42fe828ed25bdc48b332604e5e9866cc543815cc22cca49cd63ee89001a0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLA308100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee7de9a805748b9475140fb8e766e384e0684f94fa9b27ca0aa0d7dc3ff456d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA308100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b9e444660a24819ccd4ea55a796ff69af08249598031c5c99c2189a2ab5bb1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLA308100136.
Liedje Van Verlangen - Live At The Wisseloord Studios, Hilversum / 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61365dea73eeea1aed2ae373b0493e43148bb537e0b6f9d51192a85e68bc25bc. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:52:02Z), 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/NLA308100028.
40 Jaar Tante Lien - Met 9 Nieuwe Liedjes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c7c16f21915534e8976a30f0efe7257ec107a25fb2ef7f88c2ec90740f7375. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/NLA307900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e1e903756a9114029b90e56d94bb001dcabf24dca50516f6abcc51207ed162. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLA307900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc484ec3a101d0a5ec9a68fd55f5429574e62e5c616ba37f7455c32a388f8662c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/NLA307800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283f7cd9294133dc43fae07077417862a3c35ea91547e2c7f21d324d986de7e3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLA307900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c711e05986a464d0e4b1fde1bcf953c849cb9fe0ca6e818fcc052de03d6003. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:47Z), 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/NLA309300983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22da9ae456796cde9be02d047b2e85ae9b211e83679cd7d60182c905a82a23e6. 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/NLA307900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0863024b9d7753353cea470841c1381d7d61c99e2bb4a4fecaa316334c52b7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLA307900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b0bd09e0c9d2da62e76174d84cef474c9a6880b19fcd5ba94545d6a03d11d4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLA307900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43f2fbde14000d0a4c7985feb96772a273209f9e750e36b692901a424a538f6. 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/NLA307800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af905b8ae5a8a1a4617e39c7b79cfbe5e0bb967126e0baed1b0dd0f6a864397. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:52Z), 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/NLA307800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876fde3c041844e159bbd45b4d10925af8c992b5ca80c833144b33d8eb66588b. 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/NLA307800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afdf0c5ef53c509ba17045f157fb44cd77b4996d46cda8bb088ec1cdc1d75d1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/NLA307800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33a67c8a012a853b70c0364fd41ec1c3339350cceb135dd3311a1aafbffce1d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:38Z), 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/NLA307800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ee341180e19dcf526cbceb449a819db765a61901b2c759e8a5230e27d8bce. 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/NLA307800044.