Van Coke Kartel is an Afrikaans alternative rock band from Bellville, near Cape Town, South Africa. Band history Francois Van Coke and Wynand Myburgh formed Van Coke Kartel with drummer Justin Kruge
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 0x51326cfe8cbe3e3a6ad16b0d1f5bb3bd9345cade614ebce90ab6bdc39e576c03. 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/a1754eb5-8c0a-4a4f-a1c6-7ca2e5ea7197.json and https://artists.proofprofile.net/proofs/artist/a1754eb5-8c0a-4a4f-a1c6-7ca2e5ea7197.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 0x1ac2096901bff0a0614282e3fd45024f8afe56eb1319c9159ab94d0d6272380c. 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/USA560842222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ba272e7f8a94072658aadfc8901e3c413dca58fa36f54c3be02fd61ce3c0ce. 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/USA560842223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8315df733af3eb9ae75f9670d4edfe37ede51431ec6b10b8ebc79e4c109ef0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/USA560842224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22481e7a471c8e93f0bdf5f064366a9ecfb4637c32c3bd6637e7e9662b3e7dc9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA560842226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30626880fdef9dd9886611d8f48044227c349c48435032a2dc7ab92fb5151480. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:43:01Z), 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/USA560842230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0a1af22b2d58f758f34f7e7209d4392010844fd402287bd1ca3e2ebe8a591. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:06:29Z), 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/USA560910874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6a34b6b0a6e33af7d20d0be37d29bef7ffd58f7c5b4d72d22d82829a83d6ee. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZK6G2150016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a99dc98fdab3fffd659f0e58b7330c5d1777d97da7813d5ecc946f49a7643f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6G2150017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5032e4243734ef96bc513e09d7a4df7f65eddad316ad92b0dc574cd65307c7de. 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/QZK6G2150022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6509c106d0e5ab2e4a2cb9fc08aaab656562de3e7fb3570a8f2b8e2985b591. 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/ZAC011101286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba551760776f27bd017ea8411f8fab4f9e4d857b7dee3408cd0fa2b5e45add3. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:01:00Z), 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/ZAC011101287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa801b6eeeb7e9f990f0c0ad3229fc0c4dfd52282aa8a4aa5cb357583301f8930. 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/ZAC011101295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81980f5aca3ee30b6f0cfcc03c6feb2cb77c152f8878e90307aa0ca45dc9947d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ZAC011301171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa583a267d324e4a26b880e1952411c280ec22e349075b7ebc48bca057986eaa7. 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/ZAC011301173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ea80dc1dd5b681047386c16fd0a0f457d306f9754fe146a5b1a14620fe2971. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:11:14Z), 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/ZAC011301177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58e10b3e94de73337ff5be4632f37221dc8ad1b44bd2226c5fc72eddcdbb27d. 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/ZAC011200396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9595ee2950e86442fd3f1468d0a8d75960eff2a7136d28dacd33fdfeafa6567b. 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/ZAC011200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d7b736340ee94607b9bd3de4002a31155fe30e6d209f221dae27dd16dc106f. 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/ZAC011200400.