Dogecoin and PayDax Protocol (PDP) are being closely watched as potential altcoins capable of delivering 100% returns in October 2025. Dogecoin is currently trading between $0.236 and $0.242, with analysts suggesting a possible rise to $0.30 if it surpasses key resistance levels. In contrast, PDP is in its presale phase, having already raised over $720,000. The current price of PDP is $0.015, with an expected increase to $0.017 in the next funding round. PDP's institutional backing, KYC audit, and innovative lending model are seen as potential advantages that could position it favorably against Dogecoin in the short term.