Karlien van Jaarsveld (born 21 December 1985) is an Afrikaans singer-songwriter. Her debut album, As die Gordyn val, was released in 2010. Previously a member of a rock group, she is now a solo artis
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 0xca7ab10a4003c259c1b4e59c01bfe5389f4f75d6ac326b88ea572c0ddc68874e. 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/715b3659-1274-4161-b91e-9fcfb6394d84.json and https://artists.proofprofile.net/proofs/artist/715b3659-1274-4161-b91e-9fcfb6394d84.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 0x87323ee7b0c48f05fb9aa96ec576e9268b255b989a62c49970d93b7c6faad97c. 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/ZACN41600113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dfc82628f3456d8b63f78d35c121f10be6796b9e292bab6a52377e05d523cb. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:00:07Z), 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/ZACN41600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8adde5a31ffa8ed5f30c484c96c5be58316edc6ac2826b61487c63ababda87b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/ZACN41600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bdaa6434393d78031d2c165812d13c5522c80c9d259be5ad9f198c9d669b1a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZACN41600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe6f834146dd7342f85dd380bec4c4a19e0a7f7086e605bd0f9addd5aa95d7a. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/ZACN41600119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb242bd81e0ae5c72dc1b3761ecbb194d2c11d13b794ba925176fd5838c02516. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZACN41600121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f11225e085fbc9b8f5432059b00c1c9ef16dfb58aa2cfd7c894ecbbe2b7be36. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ZACN41600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab45dd3ec5a0e450660907c75f65c096172efe03fab9ddcbc49f17c8c27be6c0. 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/ZACN41600153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175480e2d499e200dcae8dc3460cb20b53052e5a5f384d4fdc448a15ddbfd3bb. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/ZACN41600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40645dfc0838d4c4377b21a3fe37a23204e9b649192fded91639a65f350a9bb3. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ZACN41600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7dabb8f99da8921d41ef69302f7f5b30a768fded5d2d296db0279fb3088e47. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:56Z), 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/ZACN41600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f11a510bb4459b7598ce79f0200ef61d0301957ab9f3539df6b3f5b85f23b3. 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/ZACN41701699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272614b38d4229474cd0ed0b694405ea59c567199ffe97592ebd1689fff0342e. 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/ZACN41700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cecfa42e6fd063dd1a9ac968572e6a9f2b0ff9d0076a3b24385eaf0aa8a13e4. 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/ZACN41700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dbca110ae21656b2fcb10d4f289666cb574be15a922475d95bd23dda50dcca. 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/ZACN41700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f1f37d8b2e6044fa2f45200bfda5f4acbeb040662e0bff3504a82077d3888b. 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/ZACN41700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20724462ce1d32f7f667168f958d70d30c5a89e1473a1128700ef02c2768be66. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZACN41700068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e3c8720bb8c7f258166e91b39fc9df49d94319a498d15b90adf0ab440dc6ff. 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/ZACN41700069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aba603ed15a0ce777887f2d86cb600dd5c99eaf84f8edb2572bc732e13279b2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ZACN41700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd642cad8ee433e4b5e3ead9b4b5e72e28176325cb2418fcfbfaf51d102f8353f. 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/ZACN41700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3a1701c50e7d837a644c5f5bad16990d6ade168a1143628e7918b7f4df8ccb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACS1683055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33445781c9908142d7af99190bb2d3420c35a7886ed9e14225ba356cf16b36d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:30Z), 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/ZAPRS1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed059959acdec1db147ac7c47816518329da4134f435457133af7fe5d931d00. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZACN41600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5503e3ddd9ff1d7a2e8adb73d33af8ac999dc43bace0af8079fa2e6979ed90. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZACN41600112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc7d9d43a4251d7b779d229bfe664fb88afe4d4d7e20a1b1fa6263558bdaffd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ZACN41600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f11a510bb4459b7598ce79f0200ef61d0301957ab9f3539df6b3f5b85f23b3. 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/ZACN41701699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272614b38d4229474cd0ed0b694405ea59c567199ffe97592ebd1689fff0342e. 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/ZACN41700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01bac0d28daf19ecdd737c4aa442ca3dfad06f9cd2629a39b12d98c9bde65ad. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/ZAPRS1800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924c44312dba76d2b15440fdd10e3d721094d094bb259bbb48d93f2f12fb29b0. 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/ZAO862000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0069e759aa4f7359cccff94f1cb3dcf3c6a805d20e9e1431a81a488cb7709a8. 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/ZAO862100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550f0cb13d6b3c149e50883649de40d2ea5c8f413bee53945d6c15a60e4668a3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ZA34K2100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaca183551c04e63a410901905aaac8994f734b4a3566bbf8d3847de91ce26a. 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/ZA34K2301158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe692a3f222d9255f173e0eea4cd33ed83a4c384a7bced4c3aa48f5de181483a0. 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/ZBK5M2400001.