Kad Merad (born Kaddour Merad, ; 27 March 1964) is a French-Algerian writer and actor. Life and career Kad Merad was born in Sidi Bel Abbès, Algeria, on 27 March 1964 to an Algerian father and a F
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 0xdad23b7b5643c6a7c9d47bfa4eeac877f089faaefd53c00a6277cfa549624572. 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/a270a0a2-07c4-4f26-b88a-662565bafbbd.json and https://artists.proofprofile.net/proofs/artist/a270a0a2-07c4-4f26-b88a-662565bafbbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dans sa maison un grand cerf (Les plus belles comptines d'Okoo)
L'araignée Gypsie - Les plus belles comptines d'Okoo
Les plus belles comptines d'Okoo (Edition Deluxe)
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 0x608b358fddd2fc76b08a7ab6d005f04154580cdc8d4d42c69a0098db1a6bbb80. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W11926371.
Dans sa maison un grand cerf - Les plus belles comptines d'Okoo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6b7bd8b7587b9fb5ab0123ee714e5e497f744f19ab8fea93dd93e148f646f5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W11926367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d14e554a34649731c971b7906a07f424500517d065f3f020b43a335f34dcb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRZ082100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d14e554a34649731c971b7906a07f424500517d065f3f020b43a335f34dcb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRZ082100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316da650e95a99a1f31ff4b4a4eb8853d42aff17957439c83811f43afbe0c3b4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR3Q60800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055ab1d4ae11ff61cdb371008f1b14aaf330811838713b961784836d59b0b904. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FR3Q60800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de636994b3e6caefbadb85058d1e754c038ed53c53e48eefd9dff2cc633e1b9. 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/FR3Q60800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b7310cd8a2e233fb8d66f4e81301cc913c13ee8418378960371e75a73f1d2. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FR3Q60800016.