https://covenant-lang.org/ 2026-04-20 monthly 1.0 https://examples.covenant-lang.org/0.9 https://examples.covenant-lang.org/01-hello-contract0.7 https://examples.covenant-lang.org/02-fields-and-storage0.7 https://examples.covenant-lang.org/03-actions-events-errors0.7 https://examples.covenant-lang.org/04-guards0.7 https://examples.covenant-lang.org/05-external-calls0.7 https://examples.covenant-lang.org/06-erc20-token0.7 https://examples.covenant-lang.org/07-fhe-basics0.7 https://examples.covenant-lang.org/08-encrypted-token0.7 https://examples.covenant-lang.org/09-post-quantum-signatures0.7 https://examples.covenant-lang.org/10-zero-knowledge-proofs0.7 https://examples.covenant-lang.org/11-cryptographic-amnesia0.7 https://examples.covenant-lang.org/12-uups-upgradeable0.7 https://examples.covenant-lang.org/13-beacon-proxy0.7 https://examples.covenant-lang.org/14-oracle-integration0.7 https://examples.covenant-lang.org/15-deploy-to-sepolia0.7