Tony Kofi (born 10 July 1966) is a British jazz saxophonist and flautist. He leads a trio and quartet and is co-founder of the Monk Liberation Band. His trio includes drummer Winston Clifford and Hamm
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 0xc478dc26590e7276b5a8b14febccf875fcdcfaea81028eec2d821002431f496f. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b09f1d1-8874-44e1-b5dd-ad0166750770.json and https://artists.proofprofile.net/proofs/artist/6b09f1d1-8874-44e1-b5dd-ad0166750770.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 0x6585e82d07a3e8f143e9200b139c7510928f6a50dad874212f918892cfcd4347. 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/GBEQT2300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cd0e5dfd5d7e80974e0dc2baf76e1b1b80c96c1f99f930fb13c3baf613c3d8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBEQT2300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6fae5028a68f8a94172b9ae60aab86423622a8cb9ef022ea3f9792420d60a2. 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/GBEQT2300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fa4f98789327ed0f585f51b78c290677a5d0d8eb3acb2b34d191b00b5c3d72. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBEQT2300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743c22156ef816686753e4ef49a686ebcdf18e0df25a8009c7c63362c305894. 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/GBEQT2300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bf7b0776143886b24e90e99b91942a1fac0874b89f6e44d821b1fee76d9b79. 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/GBEQT2300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743c22156ef816686753e4ef49a686ebcdf18e0df25a8009c7c63362c305894. 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/GBEQT2300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd89761d16cdbb36828a4b35df9856f83ddc55d9bcd66a4a6c4694aa95ce4d77. 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/GBEQT2200384.
An Adventurous Dream - the Music of Billy Strayhorn and Duke Ellington (At PizzaExpress Live - In London)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1982e58c5130fe30c0b03ad258490e5804d79bc0ad2ee8bcffe9010943820f. 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/UKW3Z2303706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91135c203f6cc95de5e01ba641b8b743cf7c83a0612503a8784de8c4e070f0d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/UKNR52000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d07a3e8761258e8312be80a66b65228bff5d1ffc2598304aea440ae6ece7d8f. 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/UKNR51800001.
Something To Live For (At PizzaExpress Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eaf0375dfa8f2d36876fa46e795815f1329c35c7151da5be09b0e48da978a9. 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/UK9KB1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805724fa3c1e8fc4db1947b48e5d9982e74cb0543bfece3edecd47c2ae11191c. 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/UK9KB1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58e345c8557a15c81b5b5ff9cf97a0a7d4c2de2813f8c3faac9575691598806. 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/UK9KB1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b545780263d74bec31372829318a9eca62025984cdb7300347c293c78815b5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/UK9KB1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41e16254d9361b0d25e536e65951a43130a85b8f72fee3f8bd10c814d81390a. 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/UK9KB1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef40ddda0879bd3ae0341e51fc4d47245118f9a3d6a581770a64c66b6eedfacb. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/UK9KB1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88607fbcc13fa050a88c39e9b0893501ea2e2f31348839e2ef325509b689032f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/UK9KB1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983e0a2703413da907ed4e1729caae1de326bbed1335185ed8da242f25099ffb. 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/UK9KB1800010.