Chains & networks
Bitcoin: settlement, mining and custody
What proof of work settles, and which risks still belong to the services around it.
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Persone e progetti
In questo articolo
Bitcoin's base system uses signatures, a public transaction history and proof of work to address double spending without a central payment operator. Nodes validate rules; miners propose blocks. More accumulated work makes rewriting a confirmed history increasingly expensive under the protocol's security assumptions. It does not make every transaction honest or every business accepting BTC solvent.
Where users take additional risk
Holding a balance at an exchange introduces a claim on that exchange. A wrapped Bitcoin token introduces an issuer or bridge. A lending product introduces a borrower and its collateral arrangements. None of these exposures is removed by calling the product Bitcoin.
For a transfer, check the actual network and the receiving service's deposit instructions. An address displayed by a compromised device can still be wrong. A valid signature can still authorise an irreversible payment to a scammer. The network validates spending authority, not the seller's promise to deliver goods.
Read custody choices before treating a platform balance as direct ownership, and the Bitcoin origin entry for historical context.
Fonti
Ricerca verificata il 5 settembre 2026. Historical cases retain the date and legal status of the cited record.