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 0x9eb91b4a805341a85e930d9f9993f2273af49fba890f4542cf94b724b5384296. 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/4f23d602-dd03-4836-9c81-515368f9fa12.json and https://artists.proofprofile.net/proofs/artist/4f23d602-dd03-4836-9c81-515368f9fa12.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xbcccc3b5e85641653a033177b4c02953dd93380b92896dfb56ceeb8fde56aba1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2221691 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6167a4897ec86f5bfea72e1d5db560370fbd4bab29be32368898e1bb4f7324b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2222016 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d945367f0e86d956fc06343f84d800d0dda8f5293992a1a614eb7e3bbc156a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2263570 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e098f89790652db8ee86707b75e3c6d38a0689a737b7e5821feb148676ba423. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2229713 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5027fc7c77d9cc389f6834848700c72eb5a9d2ce72b6342f2589f47edf95f38. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2229481 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99abfd9cfbb5aaf6c233e410609be02d5e1a7be43bca9024b60ccf82bd6bf8e5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2229617 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613b502332311e235ee42fae0fb489510f73f63bdc034248f3a97f08e8f2d572. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2201337 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263d4bf0dd6b9d0f7a9b1889f4abb287c68e688a6770d32b0daa2968513a6c37. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP52261219 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7806c60a7afa7438dbe54373dc53905391b6386858abc59ba41568963f537407. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72206086 — a six-check JSON result.
cheb l3wina -ilyas neymar -madahat -win raki yama
cheb el omari -lamima rani machi maskhot -2023
cheb el oumari -galo liya ghoraba wa3ara -2023
cheb el oumari (chafto dak bargag -2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7bb3810653e176e4aae065dec762958cc636c885e9c1b76c8a85a7753e2ea8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES62387580 — a six-check JSON result.
cheb l3wina (madahat / rakhis khoh -2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5d520cc9a2e2bec03eafbf1f153464e7489ca391e6192fecbecdfacc4888c1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2315654 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5f7769df8250e7176f8bc3cc0a0181fdb6f74744ff9813744f46bda3b7377b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2379907 — a six-check JSON result.
cheb l3wina lifikom maykfikom jadid 2023
jadid cheb l3wina / l3omari _ 3ayta 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e598a2e43f0508e80ed1c35f5a4a40cee26e77abe5db211338962d2c8e958a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2353612 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1f8a182eb3b4fa9c8986053e4b80076a5538355e4525b99db2ce4f07889b3d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2313053 — a six-check JSON result.
cheb l3wina / khok sahbi / جديد الشاب العوينة/ خوك صاحبي
cheb l3wina / hofou l'moure madar fiya ray
l3wina jadid / latlomini yabant nas / 2023
simo arboun avec mounim lboss / tawahchat lwalid (lwalida /2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645877a5283970c3430e5fb7a6b25b21a12f9703500d7394ba6d96c6e55b082d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFM2333118 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577885c2bed74b68c647c24a5aa64c38ba5e41647107e37abc247d59c0155b90. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62463171 — a six-check JSON result.
Cheb l3wina - mok mok wa 9atltoni / الشاب العوينة
Cheb l3wina / waklnahom hadro fina / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a60787b50c4e3f9992b9194331bc95f8588d56a3dc2893290767b43f79888e1. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2415248 — a six-check JSON result.
Cheb l3wina - 2024 mab9a latbazniz larigola / الشاب العوينة
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a5687303a9b5415a68b65e95c549dac0075aa13653f3d6069ba67e5593963. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32490522 — a six-check JSON result.
Simo arboun / labas 3lik ya mimti / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65fcb122fe6b2bfcedfc6b408f5950bade16bf38a389472c2b5aa54adf7b6bc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFM2461810 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19032baf4b92ddf3985892a8558d59644847e1be03675427f72df12f4dc68a18. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFM2477183 — a six-check JSON result.
cheb l3wina (rani mwalfak ya lmima 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfedb2bcaa7f13cafc8c7e9104e7b3cae9d0d2277e0f7f7fd129dba27f3732c7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52576524 — a six-check JSON result.
cheb l3wina sawakan - mab9at niya / مبقاة نية
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24868d93178597750b9714d3be7349e690551d5bcf1d0ef6baaad2c309cc0f01. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82599851 — a six-check JSON result.
العيطة الزعرية - cheb l3wina -3ayata za3riya 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eb9b6d5d8308a45ed629ab079723c89c352809a489381b54b76b2d7189715b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82566858 — a six-check JSON result.
cheb l3wina (hada malo malo 2025 cha3bi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4883bd1c72997c6a39694b3e872d1bf36cfd50848c030fb0db0c839c0ec497d0. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2532730 — a six-check JSON result.
cheb l3wina - kolhom kif kif - الشاب العوينة - كلهم كيف كيف
cheb l3wina - waldi fi milano - الشاب العوينة - والدي في ميلانو 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2021ba29cff86384cf20e8ef199f36056b81fdc4c0548c9bfadc39090f1844. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5XG2506572 — a six-check JSON result.
cheb l3wina - hiya tasahar - 2025 - الشاب العوينة
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe88f890259ca665aeee709b08ce0c0530fd47498bafc3b6de982b88a08cc05e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2591804 — a six-check JSON result.
cheb l3wina - sama3 mani hadi - 2025 / الشاب العوينة
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d868452b7a4afa54740c75bc549a1f10faa89bc5178040c4eb91bbea34685ea. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ762565564 — a six-check JSON result.