El Mida is a town and commune in the Nabeul Governorate, in the north-eastern part of Tunisia. As of 2004, it had a population of 3,437. Recensement de 2004 (Institut national de la statistique) Stad
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 0xde3eeb4a2be8756e42941403fb34db26d6c74a22a346352a9791d4a1ed6e193d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a35f1343-58bc-4e7e-8014-3679f6316750.json and https://artists.proofprofile.net/proofs/artist/a35f1343-58bc-4e7e-8014-3679f6316750.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 0xcf25de79dc241294651efa3d36104afe76597a149668a165d7f0ef785ddc4b6c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMBZ92572765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b938a11c59f424f6d17b1d744d3a3b8fe9486f90270bbb84572418090dc4eea. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QMBZ92572756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b69f429f93887c79d962cf2324c680ad0337abdc304076a5cd40e6b84445541. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QMBZ92572719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb670903b51e0863304c6ec6f1ecd84f7a490431d30fd534a1da16887e8baa562. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QMBZ92572745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b42000af17fd25cf437e3e067a3864458e0d33ff809c74b6a0368bd155c4dfb. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QMBZ92572729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c64915b867a355b364a2d2a84773e8a197eab9a992ca7ca2b33bec7f6675eb. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QMBZ92572705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190b9bafa11ef43f47ab0fe7fe610c9d0186acd8b0d0c89d902fba179e7faae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMBZ92572759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf0f97719316217c0e3b593f2009edd04e2d475fc0d0db35b32032f7be3a35d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMBZ92555068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb918e417d338876a8ff5a730a507b8fdae86492f55b984472c44fa9a940ae26c. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QMBZ92576234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5438fef1c93375ce4ff8ccad9c0d88d4f9ec6ada772298a75b9276a2cc9eff. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QMBZ92576298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fce3a8aef727083524dccc4cc1bab3f1f6e31a53f59fa9fc8f4a3253adb0f8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMBZ92576231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428db54565bb47233c60e914f15a1d700c223b0dcc78a5fb8b37f0fafb8a7ff5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QMBZ92576318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c4e50b5dd130d0367dcf9a016aa1cd77f7c96eb97e07039da522df54152fe2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMBZ92576316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f80006f36a3e817af50801f6a28f02b839def081cf245cd637415e70d0d28c6. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QMBZ92576288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dccac46d6ca0590fb490bfa443a10422d9c57833d1f794414ce9163c211c29. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMBZ92576236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfc16045aef5615b66c019942f0894728a99daa33d5570bad7fed0f4b1ff00c. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QMBZ92576248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c64a634d8dc031775fbf288e86953645c7a5ea21e510378b0993168113b00ee. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QMBZ92576218.