thumb|Cheba Maria Khadija Zine, commonly known as Cheba Maria, is a Moroccan singer and songwriter of Raï music. Born in Casablanca, she is based in Toulouse, France. Cheba Maria grew up in a cultur
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 0x58ee032ed5b84cbc7b73a68c33b3c9a1a92d960b9bd9dd0dfc83f52fc30c2fad. 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/f4fa5dc9-a4d6-4041-82f5-59038e0418b9.json and https://artists.proofprofile.net/proofs/artist/f4fa5dc9-a4d6-4041-82f5-59038e0418b9.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 0x6d00679ab4597d8d15a2a2e247d83698b3802e41bbefca0654ade2e2b5233e89. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T16:00:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR26V2030323.
DJ Youcef présente Cheba Maria, Ould Bladi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455bfe6000140a04f963cc21e31645dd05760dd2bd145a52a471ed27cfbb6ca3. 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/FR6V80511921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb593f6484a3af0f07e847a331a526e3de367dc53403fb35807a16c6d643c6d. 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/FR6V80511925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4f80af1739ed65491a34248321781da656f5247efb291fb46eb774b4601d59. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AEA141705150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd34dbf44cf4b3a74eb5b2d9cb578fb12ef0a1d452811bd07020d5e027b73257. 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/FR6V81175759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8864bfacd2297c1134eca147cfc89c13e655af7bff679661acc79ba0e7788b4d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:29:58Z), 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/FR6V81175765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d113abdd432d2ff161fba1e8b3ad0ca615c752eb8b00bd03b482fef3421756. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FR6V81175766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b650d106be19ec5519b9732d5936ac90e9d447f0808412abbe93a63d4065055. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:42Z), 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/FR6V82369889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50cb1885e7d5e832ce5838dbca749c6f212f5b7434fa9c1b2f9a6e2b25bb32c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:01Z), 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/FR6V82369897.
Mariage Sans Frontiéres Feat Dj Kayz Et Six Coups Mc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624f5123dca9bce68e20ae77bcf89730b76e0c444e4ee7a15ab27d3cf937dc12. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:27:27Z), 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/AEA142211271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e521c6f653a144de7461f9e89dc95e8b41ba4334e72eca530a31801c312fc9. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/AEA142400836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd22c023eac346228a05c107b0443c48bedd995f03a8d68b0ae682b608268717. 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/AEA142504391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba51250cd7e33ced53fc44dcf98270bd9eabbccb24a43fbfcb0b1c02f8f37f4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR0U91201077.