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Why the same stablecoin exists on several networks
A stablecoin is not one thing that happens to be reachable from several networks. It is a separate token issued on each network, and the copies share a name and a price and nothing else. Nothing moves between them by being sent to an address that looks valid, which is why the network is half of the instruction and never an optional detail beside it.
One name, several tokens
When an issuer puts a stablecoin on a new network, it creates a new token there and backs it the same way. The balance on one network is not the balance on another, and no wallet can convert between them by sending. Moving value from one to the other is a trade or a bridge — an operation with its own cost — not a transfer.
What the network actually changes
The price of the coin does not change with the network. Three other things do, and they are what the choice is about.
- What it costs to send, which can differ by orders of magnitude between networks.
- How long it takes to confirm, which is a property of the chain rather than of the sender.
- Who will accept it — the receiving side has to support that exact network, and many support only some.
Why a valid-looking address can still be wrong
Several networks share the same address format, so a wallet can accept the address, sign the transfer and broadcast it successfully to a place the recipient cannot reach. The transfer is not a failure in any technical sense. It simply arrived somewhere else, and the blockchain considers the matter closed.
The check that takes ten seconds
Before copying an address, read the network next to it and confirm your wallet is sending on that network — not on the one it happens to default to. If the receiving side named a memo or tag as well, that is part of the address rather than a note, and leaving it out has the same effect as getting the address wrong.