Update to polkadot v0 9 31 #57
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Migration to 0.9.31
The new version of Substrate (0.9.31) introduces Weight V2, which includes proof_size. Since we have solo chains and not parachains, we have selected the maximum value for proof_size. Here are more details:
Weight V1 worked fine for solo chains, where the only practical limitation was the block time. However, with the parachains protocol, a new limit has been introduced: the proof size, which is required to execute the proof of validity function by validators on Polkadot. Most networks use the maximum value for proof_size.