Omar Twihri (Known As JenJoon; born on 09 September 1991, in Jendouba), is a Tunisian musician, specializing in rap and pop music which is widely known in Tunisia as Tunisian underground music. C
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 0x3d0c710426296c85d55df2351ce85c91ad49c619b17b098019e8804a85deb97a. 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/b8ca6398-bb76-4731-b96f-e6f1ba48bf46.json and https://artists.proofprofile.net/proofs/artist/b8ca6398-bb76-4731-b96f-e6f1ba48bf46.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 0xdf7e9eb51f5273760f5714d52e81809b3ab31505991cf1fd638a126cffb67277. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ62083903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0493a87343c5ebfb39cd383fbd7eca219f29e90e22d5983ae02a3537ce1ef2c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ62083899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0034849722edfb2cd45ed83e301b6009562b781ac7fd98345cf1e679315983a4. 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/FRX282175557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d0dab2ff64ed294059bdebc25f272f5057d173c9572ef8ba79a6cc897ed548. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX762108858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f67b932342757bcfd16b2973956876678006af656b8f17295e60ea64612117. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR96X2256288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbb55170baf00f59e8c8359144c833c58dcf28cd303cd79ec34b181bee72618. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:07Z), 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/FRX452231886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d104f6e89b31ba4536d213f2a11d946f43d6e8a5afd5793ad655bd15662977d. 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/FR2X42347297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0241a33a25c8e215fe85e9699b5035b3ae94ed9bfe194615503b6b983d3168a6. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FR59R2312111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb126296c6672def0988e110c37483302111df57426985b4b4ae7d7ef787bfc. 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/FR59R2312113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa28984dfc1f3d4b22306d79227043472ff830fe88aef8e5dbfa666b3884e88. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:23:52Z), 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/FRX202555742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fac7967fb10033eda716cc731a7cb0bae35537fc2b16672605e3a94e0f380fd. 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/DGA062557264.