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--- dido:public:ra:xapend:xapend.k_consensus:02_mechanism:poauth [2021/07/18 16:11]
nick
+++ 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 ]]
-Dhariwal defines **Proof of Identity (PoI)** as:
+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]]
+)):
-//**Proof of Identity (PoI)** is the concept of PoI is to compare the private key to an authorized identity. Proof of Identity (PoI) is basically cryptographic evidence (a piece of data) that tells that any user knows a private key that compares to an authorized identity and is cryptographically attached to a specific transaction. Every individual from an existing group can create a block of data and present it to anyone for instance to the processing node. //((
-Kunal Dhariwal,
+**[[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
-Data Driven Inventor,
+validating blocks are the ones explicitly allowed to do so. This peculiarity of Proof
-++Blockchain Consensus Mecahnism__,
+of Authority diversifies it from PoS since it allows to take into account the different
-Nowember 2028,
+interests that two nodes, even with the same amount of stake, may have in the
-Accessed: 18 July 2021,
+network. A set of selected authorities has to create new blocks and secure the
-[[https://medium.datadriveninvestor.com/blockchain-consensus-mechanisms-7aa0176d488a]]
+[[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.

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