Sander Ketelaars (; born 28 February 1979), better known by his stage name Sander van Doorn () or the initials SvD, is a Dutch electro house DJ and record producer from Eindhoven. Background San
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 0xfaa6427fb084743b9674d5dbe9edf34469bc8baa0b3fa277091d155c95507837. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d762d85a-0527-44e3-8af7-6fdd459ca3f4.json and https://artists.proofprofile.net/proofs/artist/d762d85a-0527-44e3-8af7-6fdd459ca3f4.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 0xc6cf95803e696ec9c281750a69d279add7941c52bc1b04dff8db9bbac12bef43. 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/NLZ542100445.
Need To Feel Loved (Nils Hoffmann Remix)
Need To Feel Loved - Nils Hoffmann Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bede7c8e35454dc8104b261b9ed0db295a6a1058b0c6d95c4b846e8767c97ae. 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/NLZ542200443.
A State Of Trance FOREVER Spotlight: Sander van Doorn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee74cba50f116b4228d1b8c956d22e13349a1e6c963ee015955f90d54982532. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:09:20Z), 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/NLF712109214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c15ead837eb4ca40c63834707f43917dcc07dac3aaf2da2334eca9e01f9718c. 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/NLF710500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cacad626762006d1ead9060800769d0b7d0015674ad3cfff3f9c7f081050d1. 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/NLF711806667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f5b66783187f49d95d9a081606ef5931f8b4cd8ff420d673c3331f3a4bd73c. 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/NLF712104577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed3a51560acdab4fe022d7bf72c35f4692798f72217d03611b62cbbefdf2cbe. 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/NLZ542400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0584d77934b96121e8c816335b61ccbd7a6173edf42e668491463047241d478. 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/NLZ542400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805c28b982d09baed6920c2050251d92bbedc4a227957a396043ae08a09b013a. 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/NLZ542400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c382ca5eb7a87bea030ec2c02aeb141d13b733ef224ba250edf45ca7cc2b37a. 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/NLZ542302104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feb59029dd5aeca927f4f254c96ff1737b851b5ab7378e932e4811a2134e35e. 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/NLZ542301886.
Need To Feel Loved (Ginchy Mix) [Extended Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409b067fe73688c7a796006a135317e0e39701a0f861d55bdeb753552a508dcc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLZ542301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bd25cfcf554b0935d2999f138acda530f48992cec62fd5e5d6de5829fac272. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLZ542301430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cc30af8b2d2cf055f46a2078c2427df75920e0748acb2ebfa8bf4c0f83711d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLZ542301385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102942f2fd990a954c22ad02b2d1ec1c551ceb03d02cb3758f79d6b3fb146e6a. 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/NLZ542301107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989d69225c18790897bdb4f0566cbe6baffa21258e5f9bd14c3ff56dab7e6f2. 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/NLZ542300782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5db91057dd842bbdb02585087ccf095b07b853a776d2da03225acb7e156373. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLF712300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b21114331db4bc4d436b0641d429930bd4717c95880330d525d82f4d373e382. 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/NLZ542201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff8a0f8693dd8ce2f5afbeef9f63048cb6a23b8c55b12f08ae36bb6f83664fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLZ542201029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6ea57c21a4b932b2330db9e939560b48315f8a9a4bffc90370b4540991d336. 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/NLWV72100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efc58256c0f5d11cf12a4ddf4bd6cc8e328123311d07762dd9f01b6cc999ef5. 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/NLZ542101920.
Drink To Get Drunk - Laura van Dam Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a6e6a9b38399460916f2579a4a8c867e9d34c735c48e8477f758c8b7389198. 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/NLWV72100019.
Drink To Get Drunk (Laura van Dam Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a6e6a9b38399460916f2579a4a8c867e9d34c735c48e8477f758c8b7389198. 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/NLWV72100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee3d9123d849ba93c5d32dbfc25b7da0c2d29df6e4975642ab4b052af3fcd1d. 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/NLWV72000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9662e4766a2f70e637af225c1ace6f93e4287c706ac3741c5b38ef21951f93f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLZ542002240.
Temper Temper (feat. ONR) [Extended Mix]
Temper Temper (feat. ONR) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd178fbb20afe5319e093411fa795ce3af983f3a89c2b38e913b4764c428a9d39. 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/NLZ542001688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c12d8da23c1961f9b05fc6dc620e09d12b6386a346deaf5eec34002976797b3. 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/NLZ542001689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ab5ecc3ef4c403ae2d48359f1a3c8a5b0d5f57a66f21aa8558cdbacf376263. 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/NLZ542001471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93c9b6b6e1a36dabd37b75629b7d258e55a05c517a950c66b7483a6f496c599. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLZ542001167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e5dba7b96406ed4df0d9984a7268d5247c65b71c70ce214e72f557ea48f66b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLZ542000902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20ba36d61b93fc02bbb2642bfbb240f04eae71be4e846c397e998f72d18cade. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEWA1906520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160f96ad3eb032a35f06e02e48a4677b78e66612d71b8e57b5af081e3b0f615e. 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/NLZ542000553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68ba108f8c245cc2053c8e6991bd151eed0fa100dd6f2d306acd77773810c1d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLZ542000555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c137773b1d11728fdcf59313c800aa542296758c3c95067eaf8366e3c5c72c. 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/GBAAA1000357.
Control Freak (Mixed) - Sander van Doorn Remix
A State Of Trance 1000 - Celebration Mix (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06b5c7863d6a2b4256468d292f661225232a74d0d126a93e7149a8d8e7d8050. 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/NLF712100461.
Marry The Night - Sander Van Doorn Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980420fc5b71a8cf75ce808883719384cd4c3324127b62df9ec496eb4bcfd5fb. 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/USUM71119254.