One thing Daniel Larimer mentions which should be of concern to everyone who supports Bitcoin:
The average cost per transaction.This obviously needs to be low because the intent is to be below the current trusted 3rd party financial institute's fees. I base this on the following from Nakamoto's paper:
"Completely non-reversible transactions are not really possible, since financial institutions cannot avoid mediating disputes. The cost of mediation increases transaction costs, limiting the minimum practical transaction size and cutting off the possibility for small casual transactions, and there is a broader cost in the loss of ability to make non-reversible payments for nonreversible services."Larimer suggests that eventually the transaction fees will be around the $8 mark. This got me thinking along the lines of what the cost to process a transaction is today.
So what is the cost of adding a transaction into the blockchain? NOTE: I am not talking transaction fees, I am talking the actual cost of processing the transaction based on the cost of computational power. Since the transactions are processed by miners, I would suggest the answer to is the cost of the power to mine divided by the number of transactions as a starting point. Note, this is a starting point, it does not include hardware required, services, bandwidth, etc. which would need to be added in to get the total cost before dividing the number of transactions (ie: only making it worse). Disclaimer: Please understand, I am not an economist and neither do I have a degree in finance.
Total number of transactions for a year (from Blockchain.info): 45,795,557
Estimated cost to power Bitcoin mining (from Haas McCook): $780,000,000
I get
$17 per transaction. This is a seriously shocking figure. Even if McCook's estimate of power used in Bitcoin mining is twice as much as he suggests it is, the cost is still $8 to process a transaction. Miner revenue for this same period is $834,649,130.70
With an increasing hash rate, though thankfully more power efficient miners, this is likely to get worse. With mining equipment having a ROI life of say 6 to 9 months, mining gear could be purchased up to twice a year in order to maintain revenue. This should really be the concern of the Proof-of-Work mechanism used. Competition is increasing the cost versus decreasing it like you would expect in other industries. Food for thought.
Please find McCook's paper here:
https://cdn.panteracapital.com/wp-content/uploads/The-Relative-Sustainability-of-the-Bitcoin-Network.pdfBlockchain.info URL:
https://blockchain.info/charts/n-transactions-total?timespan=1year&showDataPoints=false&daysAverageString=1&show_header=true&scale=0&address=CK
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