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Need help trying to replicate ethers.utils.solidityKeccak256 in a Rails 6 controller

I’m not super familiar with Ruby or Rails, but I basically need to replicate this Javascript that uses ethersjs and call it from a Rails 6 controller. Anyone have any ideas how to achieve this? I’ve tried several different solutions but none would produce the same result.

function hashToken(tokenId, account) {     return Buffer.from(ethers.utils.solidityKeccak256(['uint256', 'address'], [tokenId, account]).slice(2), 'hex') } 

How to run bitcoind in a low memory environment

I have a Raspberry Pi with 925 MB of memory. Bitcoin Core, operating as a full node, uses between 600-900 MB. How can I reduce bitcoind‘s memory usage? I tried setting maxmempool to its minimum allowed value, 5. What about maxreceivebuffer and maxsendbuffer? Would setting these to a low value reduce memory usage? Crypto Hats,::Listen

I have a Raspberry Pi with 925 MB of memory. Bitcoin Core, operating as a full node, uses between 600-900 MB. How can I reduce bitcoind‘s memory usage?

I tried setting maxmempool to its minimum allowed value, 5. What about maxreceivebuffer and maxsendbuffer? Would setting these to a low value reduce memory usage?

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Need help trying to replicate ethers.utils.solidityKeccak256 in a Rails 6 controller

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