Proof of SIM
Introducing web3 souls


Resolving the Trilemma for Decentralized Identity:
The trilemma between Sybil resistance, privacy preservation, and self-sovereignty has been preventing the realization of a truly decentralized identity for a while. A hardware is required to cold start the system. By using the user’s existing mobile device, the PoSIM protocol allows for a smooth onboarding journey with a familiar interface and without burdensome hardware investment.
The PoSIM protocol aims to solve the trilemma by leveraging the SIM card.
As part of the global mobile telecommunications network and defined by the GSMA for identifying each individual user, the SIM is part of a mature, global network that has been functioning and servicing millions for decades. This ubiquity and availability of the SIM makes it the perfect platform for a decentralized identity that is natively born on the mobile network
1.Attested by the block chain
2.Born on the mobile network
3.Secured by the smart card system

Attested by the blockchains
The uniqueness of the Zero-Knowledge Proofs generated by PoSIM protocol can be autonomously and transparently verified by the smart contracts on the blockchain, allowing for the minting a Proof of SIM soul bound NFT (SBT) to the mobile user.

Born on the mobile network
The mobile network has connected humans globally and reflects their complex relationships in an trustless ecosystem, the perfect place for web3 souls to be born using the PoSIM embedded cryptographic functions in the SIM/eSIM. The PoSIM protocol augments the mobile ecosystem to form a decentralized sybil resistant web3 mobile society with privacy preservation and self-sovereignty to the mobile users.

Secured by the smart card system
PoSIM leverages smart card technologies, as well as the EMV certification system of the smart card supply chain to secure the PoSIM protocol. The SIM card is a type of smart card, which by design can become a hardware wallet, that are being used by billions of mobile users. In the PoSIM protocol, the SIM secures the Merkle proofs that are produced during smart card production in sites certified by EMV. The EMV system has secured the production of billions of banking cards and financial transactions in the world.
