On-chain is a term used to describe any data that is registered on the Bitcoin blockchain, in contrast with off-chain data, which is not stored on the blockchain.
On-chain is a term used to describe any data that is registered on the Bitcoin blockchain, in contrast with off-chain data, which is not stored on the blockchain. On-chain data are always Bitcoin transactions, while off-chain data can be an unconfirmed Bitcoin transaction or any other type of data.
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