A non-coherent detection scheme for the IEEE 802.15.4 offset-quadrature phase shift keying (O-QPSK) modulation receivers is proposed to achieve perfect communication, which is an important assumption in blockchain technology. More specifically, the residual carrier frequency offset (CFO) in the chip sample is first estimated and compensated, and then the conventional non-coherent detection method is directly configured for data demodulation. Simulation results show that, compared with the conventional scheme, this augmented detector can achieve rather encouraging reduction in packet-error rate (PER) as well as implementation complexity. Then, a more reasonable balance between receiver complexity and reliability is provided, which is clearly desirable for easy application of blockchain technology in wireless sensor networks (WSNs) .