confirmation

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confirmation

1. a rite in several Christian churches that confirms a baptized person in his faith and admits him to full participation in the church
2. (in the philosophy of science) the relationship between an observation and the theory which it supposedly renders more probable
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

Bitcoin confirmation

A Bitcoin transaction is confirmed when it is combined in a block with other transactions and added to the blockchain. A new block is added approximately every 10 minutes, and every new block added thereafter means greater assurance of an irreversible transaction. For very large value transactions, six confirmations are generally desired, which can take an hour. For multi-million-dollar transactions, dozens of confirmations may be required. However, to buy an inexpensive item or send a small amount of coins to someone, very often no confirmation is needed.

Layer 2 Chains
To deal with confirmation delays, independent blockchains known as "sidechains" or "Layer 2 chains" are used to handle small transactions, each chain having no confirmation requirement or its own confirmation equivalency. After a certain number of transactions are added to these auxiliary chains, a summary is added to the main blockchain such as Bitcoin or Ethereum, which makes the transactions incontestable (see sidechain and Layer 2 blockchain). See Bitcoin mining and Bitcoin.
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References in periodicals archive ?
Eight months later, they would be introduced by their mentors and welcomed by the congregation as confirmands and graduates of the confirmation program.
In the case of confirmation (affirmation of baptism), the post-baptismal Christian formation that includes instruction in the word and reception of Holy Communion leads to a deeper knowledge and experience of divine grace that in turn motivates the confirmand to publicly affirm his/her baptism and accept personal responsibility for the church's mission.
The confirmands learned of the Methodist history, heritage, beliefs and theology.
Their first communion will be celebrated during the service and the choir will sing a special anthem chosen by the confirmands. A special coffee hour will follow the service.
Despite the heavy rains, 36 confirmands and their sponsors trooped to the National Shrine of Saint Michael and the Archangels in San Miguel, Manila, on the Feast of Our Lady of Mount Carmel for the 'Kumpilang SM.'
Caption: Confirmands and families receive Holy Communion.
Second, such Christian character formation and education programmes should be approached as ongoing and life-long (recall the confirmands who signed up for a refresher).
(21) To clinch his advice, he buffets the bishop just as bishops buffet confirmands at the end of the sacrament that initiates Catholic adulthood, asserting to Cornaro that without the peasants he is nothing, a declaration that, given the proportion of peasant agricultural rents in the income of the Paduan diocese, was not far off the mark.
Candidates for confirmation are typically in their early or middle teens, and it is most often the local parish priest/pastor (sometimes in collaboration with a catechist or other lay members of the congregation) who prepares the confirmands through a process of formation intended to deepen their understanding of, and engagement with, their Christian faith.