Touzani () is a Moroccan surname. Notable people with the surname include: Karim Touzani (born 1980), Dutch retired footballer of Moroccan descent Maryam Touzani (born 1980), Moroccan filmmaker and
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 0x5a21c774187ac32294ba7c3b682717872d23a03081894f7502c92ac5b1c39ca0. 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/f3c6bc1a-8b7e-4a64-bbd7-bf92a48db932.json and https://artists.proofprofile.net/proofs/artist/f3c6bc1a-8b7e-4a64-bbd7-bf92a48db932.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 0xb06bbbc409389f36593060d0515474d3bbeff0a3f6df6ea8db41c08f22dcc53b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEH742153006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf044f2cb8aaf0b084e21e292a70ff126f9aeb7157d5449a9d2b53ef8999210. 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/GBKQU2263283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b92ecc471e313cf28fbf1fbdbe7b67851cd77ff5b3e160478261c0d8cce0bfe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:00:29Z), 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/SE4MF2200535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72fbea65983c62a88e2950f16a7f7a742e065e391648b7e3287f58765d0cf21. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:49Z), 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/ITFGO2300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa960d5fef9e702dd00988290e48886668e7f3bb0eaca2f1cebfc953e2e8f95. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE4MF2300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe88e642ed7d6e804e09ba81722da1ca7809aaadd6b5eab91bbeaae4cf5a025. 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/QMFMF2381815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af99a873fef0c814ba54f1a97ed83423f908436d06a8d96686b0c219de0758c. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/SE4MF2400630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de9cbae92b49ea6acab6e9ebe760550239176e59a66c7835ecdf9ca32574647. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ITFGO2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc51927b917aed0e2b824f165ac0101c434d6aafac325435e8709be898f61f48. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US83Z2325038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa960d5fef9e702dd00988290e48886668e7f3bb0eaca2f1cebfc953e2e8f95. 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/SE4MF2300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc94941cfa21d0526410b4e07285b857ec0f7e81a0f3a4616ab541ac83010dd. 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/ITYEB2400622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343d1e44bca6371b9344ee075b8d280380cb7065cb2c8921acc34aedaf45e579. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US83Z2305540.
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