According to Baidu Encyclopedia, the electronic leash is an electronic contract service product with a huge engine in ByteDance, not an online loan platform. The electronic lessor adopts X.509 standard CA digital certificate, RFC3 16 1 digital time stamp, ISO PDF document standard, asymmetric encryption algorithm and standard hash algorithm to assist users in electronic signature and online file signature. The electronic leash is an electronic signing product, which has the same legal effect as the offline "signed" and "sealed" paper contract. Electronic leaders provide electronic signature services. Electronics adheres to the vision of "making cooperation smoother", signing contracts with technical assistance, helping cooperation with signing contracts, helping customers realize brand mission with cooperation, and devoting itself to "leading ideal cooperation".