Sick Individuals (stylized in all caps) are a Dutch DJ duo consisting of Rinze "Ray" Hofstee (; born 15 March 1988) and Joep "Jim" Smeele (; born 3 November 1990). The two met in Hilversum (2008) whil
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 0x4362fc3bff9ccfdd42f66be71ae8be3fe799e724e5dc286d6d8dee5193ce54c2. 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/e503cdc0-285f-4c06-b518-7f63d9fc0234.json and https://artists.proofprofile.net/proofs/artist/e503cdc0-285f-4c06-b518-7f63d9fc0234.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 0xead6e0df83768bb10035d0cfbcb2c662512516feecbff18ba65f3a91c1b88c27. 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/USQX92200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca150bdf9701c8af37ee97d7d017a579054a1dddf87acef6884feac47c21534f. 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/USUG12207498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350fa5eb3db7458a06f7f2ea436d80c1206d808ac1d665da14ba00cc5df389f. 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/NLS241502858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2091fe09c35231ed7d8008f5f3a92ff27c8639311bf1a23fdd3acfaeafac789. 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/NLS241502864.
Feel your love - LoaX & Olly James Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e395d1f15e1b6441a511c5ef55ec7152414aa43b3f7a3e500ff3bf4c1705be. 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/NLS241502865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec1393c229b741af52283f2f5583213348807e6217d546b9730dffa710cff73. 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/NLS241502283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314538933a7cea12837dabd92927213e79a67703f876e7e66204073e94368380. 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/NLQ8D2100761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618b8273d79b50119e2c8d0ac39cf01aca25288f23e11c11c495b8a5d53f1d16. 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/NLUW22001125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1f6eace7fb5efcc970ba88fd2bc8a9ab5fb9ab73a8f9d4329ea31b8a241353. 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/NLUW22001126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12a95652e92381dfa1fddcc9fcdc5e8af82c6c0687eebb15542a589c03acc95. 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/NLUW22001052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab21687e191f3755a689d49b47528f68c4e169a1dbf3a7cb973f9e01a53a389. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLUW22001053.
Pony (Jump On It) - Sick Individuals Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059589171d720f0015cb29929973404a0890f7a8e1e0af679151de0220649ff9. 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/GBKQU1543758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314538933a7cea12837dabd92927213e79a67703f876e7e66204073e94368380. 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/NLQ8D2100761.
Lounge Top 50 (The Ultimate Lounge Experience)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0731763b3416c5142de6a3e927cc2dee7ceea25cce915a04b7ef065e5348ea09. 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/NLS241601944.
Addicted To You - Sick Individuals Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bba54a0dc2f75e3a19a8922dbda2240a009d23604bd1a9ca5c2b196d7aadea. 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/CH3131340371.
Kills You Slowly - Sick Individuals Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129fba42f84790572637db8bfa380ad1db59479e0e3d6cd919eda0169600a1b2. 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/USQX91901285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2920f900250504d4664f73479572f0a718bc19082d39fb89ee78180d6ea01a. 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/NLQ8D1800139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2920f900250504d4664f73479572f0a718bc19082d39fb89ee78180d6ea01a. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T20:16:46Z), 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/NLQ8D1800139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7737550d2e19933dee47df3a7ab44505f0ed66273c4b75cefaea9b08d9b518d6. 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/NLQ8D2101991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a7701c36f1f4f5fe1fa5766935f6b6bc3d9a3395a12a620d6ddc07227d8708. 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/NLQ8D1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5921f43509d9264723be19f3660b0fe8e4f1f7d1c5c57ca823892341d25f3b. 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/NLQ8D2100667.