Method for process tracking and/or process verification on the basis of at least one smart meter gateway network (N) comprising a plurality of smart meter gateways , wherein the method comprises the following steps: - providing a smart meter gateway network (N), wherein at least one smart meter gateway comprises a unique identifier, wherein the smart meter gateway network (N) is designed as a blockchain network, wherein the smart meter gateways of the smart meter gateway network (N) each store a blockchain, and wherein the smart meter gateways are configured to calculate data sets to be integrated into the blockchain (S10); - creating a unique assignment between the identifier of the smart meter gateway and at least one identity , wherein the identity specifies a person or an object (S11); - storing at least one smart contract in a blockchain, wherein the at least one smart contract is assigned to the process to be tracked and/or verified and contains test criteria for process tracking and/or process verification (S12); - receiving process information characterizing a process by at least one smart meter gateway , wherein the smart meter gateway is part of the smart meter gateway network (N) (S13); - storing the received process information or information derived therefrom in a storage unit (S14), wherein the received process information is stored with reference to the identity of the person or the object; - processing at least part of the stored process information by means of the smart contract (S15), wherein the smart contract provides process tracking and/or process verification information; and - analyzing the process on the basis of the process tracking and/or process verification information by means of one or more smart contracts (S16). - providing a smart meter gateway network (N), wherein at least one smart meter gateway comprises a unique identifier, wherein the smart meter gateway network (N) is designed as a blockchain network, wherein the smart meter gateways of the smart meter gateway network (N) each store a blockchain, and wherein the smart meter gateways are configured to calculate data sets to be integrated into the blockchain (S10); - creating a unique assignment between the identifier of the smart meter gateway and at least one identity , wherein the identity specifies a person or an object (S11); - storing at least one smart contract in a blockchain, wherein the at least one smart contract is assigned to the process to be tracked and/or verified and contains test criteria for process tracking and/or process verification (S12); - receiving process information characterizing a process by at least one smart meter gateway , wherein the smart meter gateway is part of the smart meter gateway network (N) (S13); - storing the received process information or information derived therefrom in a storage unit (S14), wherein the received process information is stored with reference to the identity of the person or the object; - processing at least part of the stored process information by means of the smart contract (S15), wherein the smart contract provides process tracking and/or process verification information; and - analyzing the process on the basis of the process tracking and/or process verification information by means of one or more smart contracts (S16). <EOS>