dido:public:ra:xapend:xapend.k_consensus:02_mechanism:poauth
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dido:public:ra:xapend:xapend.k_consensus:02_mechanism:poauth [2021/07/18 15:09] nick |
dido:public:ra:xapend:xapend.k_consensus:02_mechanism:poauth [2021/08/13 13:56] (current) murphy |
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| - | ====== Proof of Identity (PoI) ====== | + | ====== Proof of Authority (PoAuth) ====== |
| [[dido:public:ra:xapend:xapend.k_consensus:02_mechanism:start | Return to Consensus Mechanism ]] | [[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, | ||
| + | 2 November 2018, | ||
| + | Accessed 18 July 2021, | ||
| + | [[https://theses.liacs.nl/pdf/2018-2019-DeSandreNicolo.pdf]] | ||
| + | )): | ||
| - | 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]] | ||
| - | Dhariwal defines **Proof of Identity (PoI)** as: | + | **[[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.” | ||
| - | //**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. //(( | + | To recap, with PoA consensus is essential to: first, establish that validators’ |
| - | Kunal Dhariwal, | + | identity is true, and second, make validators’ eligibility for staking hard to obtain |
| - | Data Driven Inventor, | + | through multiple exams. This creates integrity and transparency within the |
| - | ++Blockchain Consensus Mecahnism__, | + | validators and the network, ensuring trust and lowering the risk fo nefarious |
| - | 27 Nowember 2028, | + | threats. |
| - | Accessed: 18 July 2021, | + | |
| - | [[https://medium.datadriveninvestor.com/blockchain-consensus-mechanisms-7aa0176d488a]] | + | |
| - | )) | + | |
dido/public/ra/xapend/xapend.k_consensus/02_mechanism/poauth.1626635343.txt.gz · Last modified: 2021/07/18 15:09 by nick
