I'm following this guide on metadata transactions with the cardano wallet server. My goal is to prove the existence of a given IPFS hash at a certain point in time. I don't need to send or receive ADA from anyone so as the guide mentions I'm sending 1,000,000 lovelace to myself. I have these two transactions (one & two) on testnet that have been in a pending state for >1 hour.
The first transaction shows ~900 ADA coming from one of my addrs and then 1 ADA going to my address that I specified and then the remainder going to another addr in my wallet. The second transaction is similar but has 3 inputs and 2 outputs.
I'm trying to understand how the eUTXO model works in this situation, I understand that I'm getting all of the ADA back but while these transactions are pending I apparently can't spend anything because I tried a third transaction but it failed saying I don't the 1 ADA required. After some more research I see that I should've specified a TTL so that it doesn't take forever but I have a few questions about how I should I approach this.
Why is the lockup inconsistent? I only need 1 ADA + fee, so why did the first transaction lock up 900 ADA and then the second locked up the remaining ~90? If it is ok with 90 is it possible to specify a smaller number?
What's with the hour long pending state? I have over 150 confirmations, is this due to congestion on testnet? Any suggestions on a TTL for this type of transaction?
The wallet provides several addresses for privacy but in this application design I don't want privacy, the intention is to make the metadata public so it really shouldn't matter what address I use as long as its consistent right? Is there a typical method for selecting an address for public transparancy or just pick the first one?
EDIT Just a moment ago I realized my local node was showing it was 99.8% synced and I just sent another transaction that updated to in_ledger status really quickly so I'm guessing the sync was why I was seeing the pending status for so long on my local node but I'm still interested in questions 1 & 3 above.