Kamaal Williams (born Henry Gilbert Williams, 14 December 1989) is a British musician and record producer. He began his career producing house and broken beat music as Henry Wu, but rose to prominenc
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 0xa148196fede55fbe21d1fa3a61fe8c72d663a21625b49ab38f71b3a8aaefe0cf. 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/8c5f5d5f-7f3a-4f40-bf18-22c4d35f34be.json and https://artists.proofprofile.net/proofs/artist/8c5f5d5f-7f3a-4f40-bf18-22c4d35f34be.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 0x061b3bdeddb4001c20a2feba043735281da45b96d6f202d46ac3c1a5c6578f19. 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/FRX281712174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda4f0359cf957a112e3ce7b1d1bef6b1b1df8207d98008ef3f3d98c82c1bfa. 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/GB5P51800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0554f2d11924fff2362675d143676dd135a1e4b8808fbfa6a46b13fffbc03c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/GB5P51800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8e4e6e2cc6823a0b7e9a7973b19a638566f0702e715ed744b49333a94bb130. 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/GB5P51800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d49486ae44c3988330ac5e0306987278956a7a71586f5d44e0458c6d36cd793. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GB5P51800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596dc9f2b41c4f7f4b98628873c3a3dd4d221a185069881f2a91bf428fd4b635. 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/GB5P51800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb21eed833c3bca9b6bb51136e00b70bb55d6b29f2e852a83f4f0ad39170a3e2. 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/GB5P51800370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a8071820fd3eabcca03af48cdc294713ec528c2c34638ae639246ebdec6169. 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/GB5P51800369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34c5b454dcea52221bc39215245a3df04ab66de4250cd751914b37779d1e34c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLTH62000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fb7000d74a5d758fec6266f08c3ade00caf6290e9dbd16a45c38a40bef84f1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GB5P52000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7489163576c21844abca5fca8bd9d2f670f00434d9563fc3b70b974fb4604a3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:51Z), 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/QMBZ92347368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a9238887b37a8341e77e2bcaec72bfdada209187daf14d21bb0e77d4082c17. 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/QMBZ92347357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f2c3a9cc64783f60d5e19caf0c422ad76039ce22b701079b2a0fc5935a150e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMBZ92347367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3903c800975363e6c881fd2aee935d5c0a06a2762d2319e06eb2feb374f0d32b. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QMBZ92347355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873d9b554e3ad3bff813943b547e640d8b1198b8a4e46bdc43b7c12e65d12443. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMBZ92317402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cb95c69ce21d1e18c5c2ba3cecc791317856d706478a3c354261fc67c456b5. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMBZ92347362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe402797aa25ec1d38af4887dbf2f3f73330e4bcb339bd82504e93064f49e77f6. 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/QMBZ92347363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb42bccf8293cce889105894ef001c960137f648fa3f918eb99a74efaa46817. 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/QMBZ92347364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11ee4b5c395ce94fd410e5dce3721674a3701f8e824953f28633633ef21b47c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6N22599700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81228dcb9834f1c9b2f144a7c2e4ce20f64acf5111f767086cae9a42155679c6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:50:43Z), 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/QM6N22599727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd6338a2148579df2b092c4c1ac298b6ee657ffb8c422e57f7047982cf19f89. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:49:48Z), 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/QM6N22599703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd1efd1c542e15486895a8687e6639e8a51be19f2f339c9cc8c372bca61fd03. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QM6N22599726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b15f7ab23474c75f36bcba0b8691e69fe737eb962edfe5e408be3d23b61daa3. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QM6N22599715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6efd6bd29b343ce8b66b5548639404c0364b4bb75023d94157c07e27f150095. 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/QT6EG2515100.
Where We Come From (Chicago x London Mixtape)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579bff4ab4e3b93b20cc175ab9f871618b3a9a981e3bc3220b56cfb8f94badc0. 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/QM84B1820006.
Boogie: Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d256bd002dcb525679c0b99555ec043a341ffbb9eec323e22bb49b2a314d1be. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:37:39Z), 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/USQ4E2100179.
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 0x9c3315c62da0c05ef6fc563feb45bf858f6fe31184e70858dbd9db3d8058c4ed. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM7282367590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33307c3fad4f5df6108e32d57704e91d862c2a3f9dc7426d9fb786ef3aeb7365. 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/QM84B1820014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca81b71e24a6d3aa96dfd7f926047bb25df5437836dc920771cd7719b3311eb. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QM7282367585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b05823ae764d14df5707b3a0fd862357878f0b943e0ae45d1888cfecda0e49f. 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/GB5P51800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67fe5308a633abf8de9077ed80da9ab7b08ff68de0becd383213dbfc83aa78f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USA2P1945708.