Solidity Interface for Uncollateralized Onchain Microfinance
This is a technical specification for a smart contract interface, intended for implementation by a solidity engineer. For an overview of onchain microlending targeted to a more general reader, please see the article Decentralized Onchain Microcredit.FunctionsdepositFunds(uint256 amount)Allows lenders to deposit funds into the protocol. The amount is in USDC, scaaled to 6 decimals. For example, 1,000,000 corresponds to 1 USDC, and passing 5,000,000 corresponds to 5 USDC.previewLoanTermsThis fu...
Solidity Interface for Uncollateralized Onchain Microfinance
This is a technical specification for a smart contract interface, intended for implementation by a solidity engineer. For an overview of onchain microlending targeted to a more general reader, please see the article Decentralized Onchain Microcredit.FunctionsdepositFunds(uint256 amount)Allows lenders to deposit funds into the protocol. The amount is in USDC, scaaled to 6 decimals. For example, 1,000,000 corresponds to 1 USDC, and passing 5,000,000 corresponds to 5 USDC.previewLoanTermsThis fu...
Decentralized Onchain Microcredit
(Cover image credit: World Bank Flickr, used under a Creative Commons License.)An Onchain Approach to MicrocreditThe World Bank estimates that 1.4 billion people worldwide remained excluded from the global financial system, unable to open accounts, secure loans, or build credit histories. For these individuals, the barriers to economic opportunity are immense. Traditional credit scoring relies on access to formal financial data, including bank accounts, payment histories, and income documenta...
Decentralized Onchain Microcredit
(Cover image credit: World Bank Flickr, used under a Creative Commons License.)An Onchain Approach to MicrocreditThe World Bank estimates that 1.4 billion people worldwide remained excluded from the global financial system, unable to open accounts, secure loans, or build credit histories. For these individuals, the barriers to economic opportunity are immense. Traditional credit scoring relies on access to formal financial data, including bank accounts, payment histories, and income documenta...
A Taxonomy of LayerZero Network Users Arising from Sybil Analysis
IntroductionA critical threat to the integrity of peer-to-peer networks, especially within blockchain ecosystems, is the Sybil attack. First identified by Douceur, this type of attack involves a single adversary creating multiple fake identities—known as Sybils—to undermine the network. These false identities can be leveraged to manipulate consensus mechanisms, disrupt the fair distribution of resources, or even execute double-spending attacks. Sybil attacks are prevalent across a variety of ...
A Taxonomy of LayerZero Network Users Arising from Sybil Analysis
IntroductionA critical threat to the integrity of peer-to-peer networks, especially within blockchain ecosystems, is the Sybil attack. First identified by Douceur, this type of attack involves a single adversary creating multiple fake identities—known as Sybils—to undermine the network. These false identities can be leveraged to manipulate consensus mechanisms, disrupt the fair distribution of resources, or even execute double-spending attacks. Sybil attacks are prevalent across a variety of ...
A Heuristic for Efficient SQL Extraction of Weighted Directed Clustering Coefficents on a Blockchain Transaction Graph
In decentralized networks, a sybil attacker refers to one entity impersonating many for the purpose of exploiting the network. Detection and mitigation of of sybil attackers is crucial to maintaining the stability of decentralized networks. A common example in blockchain is when a network or application performs an “airdrop”, distributing a reward to users of the network. Such airdrops invite sybil attackers, trying to multiply their rewards. The clustering coefficient of a node $$u$$ is a me...
A Heuristic for Efficient SQL Extraction of Weighted Directed Clustering Coefficents on a Blockchain Transaction Graph
In decentralized networks, a sybil attacker refers to one entity impersonating many for the purpose of exploiting the network. Detection and mitigation of of sybil attackers is crucial to maintaining the stability of decentralized networks. A common example in blockchain is when a network or application performs an “airdrop”, distributing a reward to users of the network. Such airdrops invite sybil attackers, trying to multiply their rewards. The clustering coefficient of a node $$u$$ is a me...
Sybil Detection by XGBoost
Public blockchains are transparent, accurate, and comprehensive records of their entire history. These freely available data sets are some of the largest and cleanest in the world, and they are highly amenable to the application of machine learning. In 2024, the Ethereum blockchain has about 200 million addresses, which is the same as the count of active websites on the internet. It is a global, public, financial dataset of internet scale. Ranking, classification, personalization, co-occurren...
Sybil Detection by XGBoost
Public blockchains are transparent, accurate, and comprehensive records of their entire history. These freely available data sets are some of the largest and cleanest in the world, and they are highly amenable to the application of machine learning. In 2024, the Ethereum blockchain has about 200 million addresses, which is the same as the count of active websites on the internet. It is a global, public, financial dataset of internet scale. Ranking, classification, personalization, co-occurren...
