What does spent and unspent mean in blockchain?
A bitcoin transaction has both an input and an output. The input is the address where the bitcoin is sent from; the output is the address where it is sent to. If an output has already been spent, it cannot be spent again. However, an Unspent Transaction Output can be used, or spent, as an input in another transaction.
What is a spent transaction?
Spent transactions refers to Transaction Outputs that have been expended.
What does unspent mean on blockchain Explorer?
A UTXO defines an output of a blockchain transaction that has not been spent, i.e. can be used as an input in a new transaction. …
What is a spent output?
It’s the realized value (USD) divided by the value at creation (USD) of the output. Or simply: price sold / price paid. When SOPR > 1, it means that the owners of the spent outputs are in profit at the time of the transaction; otherwise, they are at a loss.
How do I read bitcoin transactions?
How to read a cryptocurrency transaction on a Block Explorer
- The transaction Hash ID. The transaction hash, also known as the Transaction ID, is the identifier of this specific transaction. …
- The sending address(es) …
- The fees. …
- The receiving address(es) …
- The transaction’s status.
When a record is on a blockchain who can access it?
In many cases, blockchain is public: anyone can view it at any time because it resides on the network, not within a single institution charged with auditing transactions and keeping records. No one can hide a transaction, and that makes bitcoin more traceable than cash.
Is Eth a UTXO?
The UTXO model is employed by Bitcoin, and Ethereum uses the Account/Balance Model. In UTXO, a user’s wallet keeps track of a list of unspent transactions associated with all addresses owned by the user, and the balance of the wallet is calculated as the sum of those unspent transactions.
Where are the transactions recorded in a blockchain?
The ledger is distributed across several nodes, meaning the data is replicated and stored instantaneously on each node across the system. When a transaction is recorded in the blockchain, details of the transaction such as price, asset, and ownership, are recorded, verified and settled within seconds across all nodes.
Does transaction recorded automatically in blockchain technology?
Yes….. The transactions can be recorded automatically in a blockchain . The ledger is distributed across several nodes, meaning the data is replicated and stored instantaneously on each node across the system.
What is extended UTXO?
We present Extended UTXO (EUTXO), an extension to Bitcoin’s UTXO model that supports a substantially more expressive form of validation scripts, including scripts that implement general state machines and enforce invariants across entire transaction chains. …