Differences

This shows you the differences between two versions of the page.

--- dido:public:ra:xapend:xapend.k_consensus:02_mechanism:poauth [2021/07/16 19:05]
nick created
+++ dido:public:ra:xapend:xapend.k_consensus:02_mechanism:poauth [2021/08/13 13:56] (current)
murphy
@@ Line 1: / Line 1: @@
-====== Proof of Identity (PoI) ======
+====== Proof of Authority (PoAuth) ======
 [[dido:public:ra:xapend:xapend.k_consensus:02_mechanism:start | Return to Consensus Mechanism ]]
-**Proof of Identity (PoI)** is just like that of the authorized identity. PoI is a cryptographic confirmation for a users’ private key that is being attached to each particular transaction. Each identified user can create and manage a block of data that can be presented to others in the network.
+Sandre provides the following definition((
+Nicolò De Sandre,
+Leiden Institute of Advanced Computer Science (LIACS)
+Leiden University,
+__A Multicriteria Evaluation of Blockchain Technologies in the Healthcare System__,
+page 35,
+November 2018,
+Accessed 18 July 2021,
+[[https://theses.liacs.nl/pdf/2018-2019-DeSandreNicolo.pdf]]
+)):
+**[[dido:public:ra:xapend:xapend.a_glossary:p:proof_of_authority_poa|Proof of Authority (PoAuth)]]** or **(PoA)**is an alternative consensus algorithm, a modified [[dido:public:ra:xapend:xapend.a_glossary:p:proof_of_stake_pos|Proof of Stake]] in which a validator’s identity replaces the role of the stake and, the nodes
+validating blocks are the ones explicitly allowed to do so. This peculiarity of Proof
+of Authority diversifies it from PoS since it allows to take into account the different
+interests that two nodes, even with the same amount of stake, may have in the
+network. A set of selected authorities has to create new blocks and secure the
+[[dido:public:ra:xapend:xapend.a_glossary:b:blockchain|blockchain]]. The majority of the authorities have to agree on the current status of
+the transactions, and to sign off the chain; only then, it can be added to the
+blockchain and become permanent. The identity of a validator denotes the
+“congruity between a validator’s [[dido:public:ra:xapend:xapend.a_glossary:i:identification|identification]] on a [[dido:public:ra:xapend:xapend.a_glossary:p:platform|platform]] with his official
+documents, i.e. certainty that a validator is exactly whom that person represents to
+be.” A robust process at assessing whether the validators are whom they claim to be 24
+or not is needed, and difficult eligibility ensures validators to be a scarce resource,
+this incentivizes them to retain the position they have earned since it is unpleasant
+to lose. “Individuals whose identity, and reputation is at stake for the securing of a
+network are incentivized to preserve the network.”
+To recap, with PoA consensus is essential to: first, establish that validators’
+identity is true, and second, make validators’ eligibility for staking hard to obtain
+through multiple exams. This creates integrity and transparency within the
+validators and the network, ensuring trust and lowering the risk fo nefarious
+threats.
-This blockchain consensus model ensures the authenticity and integrity of the created data. And thus, is a good choice for introducing smart cities.[[dido:public:ra:xapend:xapend.k_consensus:09_ref:bhardwaj]]
 /**=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

DIDO Wiki

User Tools

Site Tools

Differences

Page Tools