Havent recieved funds in metamask
Secure cold storage of cryptocurrencies such as Bitcoin or Ethereum, is a difficult and complex challenge. These specifications and requirements may include processing speed, memory, storage, plug-ins, and environmental constraints such as shock, vibration, temperature fluctuations, and humidity levels. For the full details, check out the article on how to choose a hardware wallet. The blockchain removes the single-point-of-failure, in turn enabling device networks to protect themselves in other ways, for example by allowing the nodes within a given network to quarantine any nodes that start behaving unusually.