[tromp]

This is intended for Bitcoin SV, based on a new OP_PUSH_TX opcode [1] and suffering from the impractical constraint of needing a new BSV transaction for every single step of the smart contract execution.

[1] https://medium.com/xiaohuiliu/stateful-smart-contracts-on-bi...

[dtagames]

So it's a proposal for an altcoin. That is not the same as "writing smart contracts on the Bitcoin blockchain."