0002094073 2026-02-25 2026-02-25 0002094073 CTAAU:UnitsEachConsistingOfOneClassOrdinaryShare0.0001ParValueAndOneRightToReceiveOnefifthOfOneClassOrdinaryShareMember 2026-02-25 2026-02-25 0002094073 CTAAU:ClassOrdinaryShares0.0001ParValueMember 2026-02-25 2026-02-25 0002094073 CTAAU:RightsEachEntitlingHolderToReceiveOnefifth15OfOneClassOrdinaryShareMember 2026-02-25 2026-02-25 false 0002094073 8-K 2026-02-25 ClearThink 1 Acquisition Corp. E9 001-43139 00-0000000 ClearThink 1 Acquisition Corp. 150 E. Palmetto Park Road Suite 202 Boca Raton FL 33432 (561) 358-3696 false false false false Units, each consisting of one Class A ordinary share, $0.0001 par value, and one right to receive one-fifth of one Class A ordinary share CTAAU NASDAQ Class A ordinary shares, $0.0001 par value CTAA NASDAQ Rights, each entitling the holder to receive one-fifth (1/5) of one Class A ordinary share CTAAR NASDAQ true false