aptos

Define a module with structs using the key ability, store them at signer addresses with move_to, and read them with borrow_global. Functions that access global storage need an acquires annotation, and read-only functions use the #[view] attribute for off-chain calls.

Use @aptos-labs/ts-sdk to build a simple transaction calling 0x1::aptos_account::transfer with the recipient address and amount in octas. Sign and submit with aptos.signAndSubmitTransaction, then wait for confirmation with waitForTransaction.

The Coin standard uses generic type parameters and requires accounts to register a CoinStore before receiving funds. Fungible Asset uses the object model with auto-created primary stores, and new projects should prefer it, though APT supports both interfaces.

No, the aptos npm package is deprecated. Use @aptos-labs/ts-sdk instead, initializing a client with new Aptos(new AptosConfig({ network: Network.MAINNET })).

The recipient account has not registered for that coin type. Either call coin::register first or use aptos_account::transfer_coins, which automatically registers the recipient during the transfer.

Block-STM executes transactions in parallel and re-executes on conflicts, so contracts with a single global resource that every transaction writes to will serialize. Design with per-user resources instead of global counters to preserve parallel execution.