Sons of Kemet were a British jazz band formed by Shabaka Hutchings, Oren Marshall, Seb Rochford, and Tom Skinner. Theon Cross replaced Marshall on tuba after the first album, and Eddie Hick replaced R
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 0x7158ad8b763831132cb2b7a70acc5ea499a3886ed73f0e817ff5d4f50e8a8b72. 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/edcdc5ce-5262-4b24-8668-ca898bbaa620.json and https://artists.proofprofile.net/proofs/artist/edcdc5ce-5262-4b24-8668-ca898bbaa620.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 0xa486c684e860a0626be56cc608b2a291df5208c374c675318c6504fbf80bdd00. 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/GBCBG1319501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2a7b6202a08f429a0076e9a90e83865b4c4d6bdd305f9c11ef232ece6ed6f6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:56:56Z), 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/GBCBG1319502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e02f155a97c004e621a46f7028692b1a0df72aabec8a74a1f70f3cb6d9d3fb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBCBG1319503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad581e7aea7a20446003095f1e770eca35ff8458adfd59537638e4ed203bba6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBCBG1319505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad379590999905bc6c7bf7852f36f82448ec27a0368795dd41e855a61d883e37. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBCBG1319506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ee72a504c22de19f866602cf59e27471e25291900fad2ff02c8255f4f1fa8d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:06Z), 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/GBCBG1319507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb42b2a082b1908adce0d7ab54179693bb43383488c4a178ba8413ec4e26356a. 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/GBCBG1319508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbb840d513ccb111f588ebc14643f27b1fb06ce6d3d93e6eca1028efdcb9bbd. 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/GBCBG1521703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd9bc2fdb2ec2da15d75f5c3542bcdce0d6e7bf518329bd81b6d4c3ed5389ea. 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/GBCBG1521704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295a353a1291425c591d0cf6feac0fb0c7211c0131fa835853f59b677d0b20bb. 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/GBCBG1521705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf679c1aac061dbdb47e42e9c38486d6c50bac7e356562ee8ea43444b34275032. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBCBG1521706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ca4410901fc10952fe6a3f517dfab9aacbdd5e21a7888959c20fc091f22a4d. 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/GBCBG1521707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad46e97a0c76ce7ef58124a7bd21a91c4b7a37a179a9c182fce86dacf3d6c2d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:58Z), 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/GBCBG1521708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b48b11e9ad4f73aa877ddee10fe80a5c5c8f9a4bb5b041c3dd9877ad936af2. 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/USUM72023598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b3fd6c8a2d2f4226fdc535641c7e261a95b5f43b8ab8a8959e2dad0414cae9. 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/USUM72023599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad724e3f2511c2a7956324f220414bee0b681dedf627adb579b35114744b162. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USUM72023600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1612571f3e9a49b5316bb4cda805f7be8bb7e2f0d8c33ae859879f2a250490. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T10:58:55Z), 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/USUM72023816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813cdaa94ffed37777dfb9312fde438b5352690217dbcc0ddbc82c3d5f7bdc77. 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/USUM72023815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88114e9a37a82bc8b9795b7911e597019d3b881df43748ef911915ce1a9079ba. 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/USUM71714086.