Cassie Kinoshi is a British composer, saxophonist and bandleader who leads the group SEED Ensemble, who were nominated for a Mercury Prize award in 2019. Biography Kinoshi grew up in Welwyn Garden
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 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 0x3591c459dc5aee97d5a1cccc167b3e42e6f373f3bbb3ab42adb721632a2765ec. 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/22ed73c2-0572-43ea-8ad1-8846c93de8e3.json and https://artists.proofprofile.net/proofs/artist/22ed73c2-0572-43ea-8ad1-8846c93de8e3.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 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 0x56c59c60e5348edd69fc39ebce3bc6eef45f0e02588e317300b3536b86b47790. 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/QM84B2381001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19af7f7b5fabbd77b4c5ebddb5f08801866c4b94a411afa0c8d8fc72a573c048. 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/QM84B2381002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e1afc432e5843878454bbfe3b7f58ba46d3d9102a8457f6bf2d400bcf9fa71. 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/QM84B2381003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6005ec0f8b92ebd4af8b318e2e1bc4918de4cb3517b2746abf4c78f92d8f7b. 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/QM84B2381004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c76274a1629e7bec609838e75d858305049ac856591f6103e0e079c89cb7a8. 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/QM84B2381005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4163a8156e45fee68cbce94480fc60576b4fde6bd2ca5a6d9e89b02ac057f. 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/QM84B2381006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3cdb4a9bece1e7fda6318a50d65c5c98affe8fcb451b9dc9aa7855738b2773. 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/QM84B2381007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f9a98b150385f61bb185753406f06ac527f5fa71fdb09171f48b9b077284a6. 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/UK6822120589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593fb28e3c9af00029976e365eb27bc466c5e4aa5d6212e05a6a0d385ba43647. 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/UK6822120590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ecae3adfc4a5de3bf66ae506bf3739ac0c8f195ba8db9eef7572e8f30a6bea. 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/UK6822120591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d5b2198e853ca6bb12a6f99a2474b470e5c256987ab86cf4ff3ae9a935b77. 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/UK6822120592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7180ef0938e4eacc66212106df6d7fdd7731da17e68dc234d272501e327b0b2b. 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/UK6822120593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83742e88c49c1877c27d2c0690ee8708623342fd2210dd762edccb7e27b54a0f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/UK6822120594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89276678dd419a42b6f05d7fbc4e72ac0dca0d64ce0f0dbb6ab3477e89b4feb7. 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/UK6822120595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee96919d6775b70d5ab32285359c83f2a8b440a8ab3428776d31b4e443867177. 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/UK6822120596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24701f1ed931c988a72bd3b25bd738d9d315fc4275c7de3df9e0a9bb703a7d8f. 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/UK6822120597.
JazznewbloodALIVE (Live at Iklectik/Efg London Jazz Festival 2016)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ed6d212c5e6348b4e49881734aa7f27eb2c095bd55798fd0a1b8ff34283665. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR10S1789180.