Most
web wallet providers are in charge of your private keys which means you don't own your bitcoins.
Not exact matches
First, the operators of SIGAINT, a commonly used dark
web email
provider, decided to host a full node for Monero light
wallets.
Bitcoin
wallet provider Coinkite released an audit on 24th February, stating at the time that it believed «
web wallets, exchanges and websites holding your funds should provide proof of reserves».