Lieven Scheire (born 3 May 1981) is a Belgian comedian, presenter and science communicator. Career Scheire attended secondary school at the Sint-Lodewijkscollege in Lokeren; he then began a physics d
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 0x6a885e9647bf52a08f83b750c5453056d8ef6cc027d7895f6cdbba6a94494873. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/737fce34-9f4b-4094-b438-302ca067b157.json and https://artists.proofprofile.net/proofs/artist/737fce34-9f4b-4094-b438-302ca067b157.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 0x1ce2979477f6c7c3931b9938abf1dd1f2d1efe75b405cfd583603f1ecdc658c4. 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/QZTB52290858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b246c845662c6fa6b901c62e8c41344a73f08f22bca584d988f057701d55186. 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/QZTB52290859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce94e2fe151b8239d68d863c787ccbe1c3aa0d3d6b5be50a7e6b81ae9d20a71. 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/QZTB52290860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead76e33904cd5507e9ed380469e2024992cd8d147983ed43bb56bd81423b512. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZTB52290862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5681a53871c14282d0c8ceee81014fdd81bfc887a3982af32b91cf78f316fcda. 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/QZTB52290863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0256b9072434b7b72dacffa914d7c244ef43ec05ccfc18b0b2968d4f81669264. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTB52290864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60f0ecb52d845ecc399db657c359136658c1e3d008cfa017702d02725b0d3f9. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZTB52290866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1380eb6349ef4518b07b57a19c3900d22977f61b8b16bde0a05b30e5ae21c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB52290867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2b1739b564454adc712414c5d2130271f5c8b5819fac93ccc5c2088ba38a9f. 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/QZTB52290868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb815750ae544d1e5332775296c8ed2ee9c2db1bf51860782deaaec619441d39. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZTB52290869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20d431d850bc2ada3f29b44f092bdae38668060b45a9b6f98a942ec300be6a5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZTB52290870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d9255bd602ac49b19604fdfee743133121cd6c1e94a8b078d0c0f203a50f5. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZTB52290871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342cd094f403f93e3b2aea8b9a7c6f39a35d9661183c07183a514030620188ca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB52290873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a39c0d550a67e9a40b881656521eac4a4a35dc3c8aa63b821e11f273c774f0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTB52290875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeace99833081be248ae3195dc1e1bfdf992447590f0ab8017bbf0a26fa7ad05. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZTB52290876.