Questions on TON Smart Contracts, Oracles, and Token Implementations

I have a few questions: 1. Regarding the public verification of smart contract code on TON. On Etherscan, for example, I can upload the source code, it will be compiled with a specific compiler build, the bytecode will be checked, a checkbox will be ticked, and the code becomes accessible to everyone. That way, I can review the smart contract code myself, not just rely on auditors' statements saying "it's all in order, we checked." Is there something similar on TON? Is this a common practice? I am also interested in hearing about security practices and code auditing in general. 2. What oracle systems exist on TON? How popular and reliable/decentralized are they? Specifically, solutions for: - Cryptocurrency price feeds - VRF (Verifiable Random Functions) 3. Is there a canonical implementation of TON tokens (tokens) for LayerZero? (This is more of a LayerZero question — but maybe someone knows.) Part of question 3 arises from point 1. For example, USDT0 has a closed repo, with a public audit of the closed repo, but I couldn't find the source code. Thanks 🕊️