Proving method and device for block chain, electronic equipment and storage medium

The invention provides a block chain proving method and device, electronic equipment and a storage medium. The implementation scheme of the method comprises the following steps: acquiring one or more binding declarations of an address controller to a public address of the address controller, wherein the one or more binding declarations indicate a binding relationship between the public address and one or more private addresses of the address controller; for each private address in the one or more private addresses, obtaining signature data after a corresponding binding statement in the one or more binding statements is signed, and signing the corresponding binding statement is based on a private key corresponding to the private address; and generating first proof data for verifying the one or more binding relationships by using a zero-knowledge proof circuit meeting a preset condition, the input of the zero-knowledge proof circuit comprising signature data. 本公开提供了一种区块链的证明方法及装置、电子设备和存储介质。该方法的实现方案为：获取地址控制者对该地址控