Just sending your address to DefaultTrust should suffice. If you ever post your public address whilst dealing with someone on the forum, you can use that to sign at a later date if your account becomes compromised. If you send your address to default trust, it's best to go to your Outbox and click on the message you sent Subject and save the url. The part that you need from the url will look something like this:
Alternatively, you can post a PGP key.
If you want me to recover a hacked/lost account, you need to prove that you own it. Typically, the only acceptable method of proving ownership is by signing a message (including current date and desired new email address) using a Bitcoin address or PGP key associated with the account. A Bitcoin address or PGP key is associated with the account only if the account posted the key/address, sent it in a PM, or if it is still listed in the account's profile.
