# 67 Scaling Ethereum after the Shanghai Upgrade
The Ledger Podcast
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The Merge of Proof of Stake on the Ethereum Blockchain
EIP 1559 introduced a burning mechanism and it's quite important as well for the economics of Ethereum. Ava, an asset that pays for his own security to actual economic activity transaction fee and is deflationary in terms of supply. It's the first crypto assets, like the first blockchain that is economically sustainable.
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