Nicolas Chaix, also known by his alias I:Cube, is a French DJ and an electronic music producer. Background Paris based, he first gained limelight on Paris' underground dance scene in the mid to late
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 0xcf4facbb6c3fa29988db39738e5f317d3f537ea0f957058a2cc903bd6f08f55c. 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/124d66fc-5733-477f-9b71-7a5e4cd8a7e8.json and https://artists.proofprofile.net/proofs/artist/124d66fc-5733-477f-9b71-7a5e4cd8a7e8.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 0xf18040f5459816d33b3fabfe3c4d0dea3a4d6aed5c92377ef5e273b23cec60d4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:03:35Z), 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/FR08Q9900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906cf48e3303ed8d0a0092e54f2771b34433888758cfb91218c140f6aefb1ffc. 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/FR08Q9900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958f1f8080833858f61372b902939dc31aeaf784af9a04c915df27618472f1cc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:56:28Z), 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/FR08Q9900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d82ef1bf82b46eb7415e9d7ad46ea129ea20a6801d9517b5ee85187154e871d. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/FR08Q0900395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd78c7278dcf0512c54444a2808c40129122c4b4ca90bc7bb8db51dda41468bc. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:03:18Z), 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/FR08Q1100452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf382448cae49bc7d9ff2c04fad943341771adea1036e9feee35ec2bd220d8a6e. 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/FR08Q1500641.
Oeil Cube vs. I:Cube (Live in Paris, 1996)
It Makes You Forget (Itgehane) - I:Cube Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416d4a946fcff3cc171c810d220ee91a9eebcf00a289c2977fe3cf577a461568. 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/GBCFB1800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73bf06f4058726e6282dad008e987d3005264ab7346ccd684f32a13ca19db7e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEG931992267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26370d1b2d3d1f7a51aba17afa4cfac48f9d6072d3de476d26152629e11899ef. 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/DEG931791820.
Balance 020 (Mixed By Deetron) [Un-Mixed Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5f863f3399ccae2ede839509ce8ad1d7a5d3dd11e59f98bb273a3096ef7564. 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/FR08Q0900396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc607b1c82244deb721e33a82e5cf2662c9eae8da892cf2af4aeae772a742126c. 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/DEG931900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d87ac43fd925718622ac64fe9a8dc1f8ab7113c147d9938d2335801336d5d1. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/AUFF01500716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7942a2a5bbfbe232a850ba8a7d704258cc3b778967012b26b4a22a78fd39a567. 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/NOSTS1800220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf931e409da7af590f8901452e8f669ddfc658edaf4b8a94f70e9052e0f8a5f. 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/FR08Q1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc7ae32610b31ecea0a02ae43c91429fff4ee9bea3677e0670212963f0f3481. 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/BEN581500328.
It Makes You Forget (Itgehane) - I:Cube Parallel Dub
It Makes You Forget (Itgehane) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63579d45fe41aca8abbd65af9ed38c504386c77a2c6f99727fa8922d847f1459. 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/GBCFB1800397.
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 0x997c9aac73cc38c865e4eafee373c748017eee2d55fe7baf769eb2bf9120e663. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/AUFF01500715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e274f942283841dc5d3eb306c9c3fb6cc5823f67389bed23955b1dd847b018e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR5R00900398.