For the key leak problem in identity-based blind signature. a blind signature scheme based on the trusted plat-form control module (TPCM) was presented. The message which will be signed is unknown to the signer. and the infor-mation of the signature cannot be tracked. https://www.bekindtopets.com/hot-save-Well-Rite-WR-240-Well-Pressure-Storage-Tank-Steel-81-Gal-great-buy/