Swart is an Afrikaans, Dutch and German surname meaning "black" (spelled zwart in modern Dutch). Variations on it are de Swart, Swarte, de Swarte, Swarts, Zwart, de Zwart, and Zwarts. People with this
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187be81c246d9c217df750eba1ad25630208042f123375921a254e3fcdfd4d95. 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/b10e6f67-11d4-4101-98d3-ff2ddcf18b11.json and https://artists.proofprofile.net/proofs/artist/b10e6f67-11d4-4101-98d3-ff2ddcf18b11.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be708c3d666f79b772d9d65126da3100765326988a4ee8f3f4b7df962cc50a4. 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/NLHR21900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50240b68de0e2135d0f27c553ef7264c8c677aa7f8326ab888c8c41e20acbc0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZJRB1955957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205d3dacbd24c9576535e8ac8d9f4bc14ffa0b13fdccbdd8fe013294fa8c3f8f. 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/NLHR22000376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fae67de3db7e6959de75b5d6d31ed0f439acfb9b37178818014e109650ef842. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/NLHR22000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bca90de8ebf3722774ae778f1f64397fff071a6a8c897d2fa2e1674e51eb1d. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/BEN582001150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9f7ca8869d45518e80f20fee6666d7483f867004b92a9d0173308d5ca178e1. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/NLHR22200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875daf10cf530097d09afe42e72cc0be58a11e55fc16f3342f173f3a41ab6d47. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/GBKQU2368350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f3c87df8b4d09dd5115c9d6a14a022001d0e38f689206c71e370f94c21173. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/NLHR22300788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18669a37fbc04217cbb26af4a3342eab94dcf1acedb1f3f1ee1d399c3b03a210. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/UKN6K2301612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739417da8a369f45764e6f114f96de0ee5a7d4462fa2613cd9a50dc98145a886. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZFP52461767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b60950c3843568dbe77908fa846af6640d5b54bb34bcd32c119067387cf338f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BEN582400476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a43f9b8bbf17b8b76905e5eeecc7739982db29af6412fd468a0b21d2c70b8. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZH5E2421645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e25148504e724ccd60e75313d0cd3b10f06060a9c5e9f8804f09c2cc81e9b56. 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/UKY7B2000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440e54c2b8329f79900b0079c86818fc52cdf991916f80cff2f7c1001900ba12. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DGA0S2484516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eda9c080d9f9db576798d73bba93aa92b4a041a4cfd2012580438ba6bf9942a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMHK2586211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f924df74f51f03ccb1e05f26599a520a3a513d5cd4fe29ab6a1766a487b4469. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMHM2596218.
Global Underground #44: Amelie Lens - Antwerp (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96afbd796f12750f28a632721c7288defd472705e8699ea5149b63d8ebbe8b6f. 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/GBHFW2200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9a155a324972528d25e75f0bb2552a836284dbfbdbf877cc3d1930158c9ac6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLCK41079934.
Global Underground #44: Amelie Lens - Antwerp (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f75d30c5541b7eeae00bdc3b9407135b532179a6d41650796aa4938c4f4ec5b. 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/BEN582200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b60950c3843568dbe77908fa846af6640d5b54bb34bcd32c119067387cf338f. 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/BEN582400476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440e54c2b8329f79900b0079c86818fc52cdf991916f80cff2f7c1001900ba12. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DGA0S2484516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200ee581c97df7f7b37c181687545c44da59ccc6e478a175066373360b06a9ef. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZS632574892.