I sent the following document to the exchanges on twitter today for request for comment.
http://www.againsthunger.org/files/1313/9379/5032/Cold_Storage_Verification.pdfI thought I would post the main points here. These recommendations are obviously a starting point and are designed to open up dialogue in the bitcoin community on how we as a community should proceed to ensure openness and transparency in the management of external parties cryptocurrencies
Proposal for Crytpocurrency Balance Monitoring.
There have been several instances in the past where the general public has received notification that Bitcoin balances in cold storage were being reported inaccurately. When a discrepancy occurs a long time after an event it becomes more difficult to trace the coins on the block chain. Issues can also continue to occur without the holding organization or the general public’s knowledge. This can result in additional losses, and people may also continue to invest into this organization without the investors being made aware of the situation.
I would like to make the following recommendations to provide transparency into the practice of holding and storing cryptocurrencies on behalf of another party.
1 ) The public addresses of cryptocurrencies that are held in either “Cold” or “Warm” storage by exchanges, hosted wallets or other organizations are made available to a third party organization for external monitoring.
2 ) The cold storage address or at minimum the transferring addresses to the cold storage will be signed and verified to ensure proof of ownership.
3 ) Transfer to a paper wallet must occur in a single transfer and the paper wallet public address should be provided to the 3rd party monitoring organization.
4 ) If additional transfers to another paper wallet or cold / warm storage are to occur the wallet will need to be signed and verified and again destination public address provided for monitoring.
5 ) Small donations can also be made as an additional proof of ownership over and above signing and verification to ensure you can transfer coins from the address.
6 ) The Balance of these wallets will be continually monitored and electronic notification will be made public when any changes to these balances occur. Publication of changes would be made available via an API and published on a public networks.
7 ) Monthly reconciliation of wallet Balances will be made public to ensure that the number of coins reported by the holding organization is in fact equal to the number of coins within the monitored wallet.
8 ) Cold storage practices of the holding organization are made public and adhered to, with the option to audit the process at any time.