Questions tagged [erc725]

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I am trying to create a Marketplace Smart contract to buy and sell NFT with ERC20 token but getting error when I try to implement buy function

I am trying to create a Marketplace Smart contract to buy and sell NFT with ERC20 token. My Token.sol pragma solidity ^0.8.4; import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; ...
Samresh Kumar Jha's user avatar
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Deploy ERC725 Identity with ERC735 Claims

I am using ERC725v1 and ERC735 Interfaces to add a contract which can deploy an ERC725 based Identity contract that can hold an Identity key and further Add Claims from that Identity for the ...
Qasid Labeed's user avatar
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Version Compatibility Issues Solidity v0.4 to 0.5 | Identity Contracts ERC 725 | abi.encodePacked not working

This is in reference to ERC 725 Identity Contracts. I am updating the contract to version 0.5. The issue arise in a specific function where it requires a single argument to the call method which I ...
Qasid Labeed's user avatar
3 votes
1 answer
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ERC725 and ERC735 vs Hyperledger Indy (decentralized identity/self-sovereign identity)

Which is the better platform for decentralized identity, ERC725 and ERC735 or Hyperledger Indy? Thinking from a performance perspective, Indy would probably shine. However, what about the other ...
Nathan Aw's user avatar
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5 votes
1 answer
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How to get private keys on Truffle from Ganache accounts

Doing some ERC-735 tests on truffle+ganache I got stuck when creating claim signatures. They need to be signed from my ganache account, but I don't know its private key. The code to be used is this: ...
Juan Ignacio Pérez Sacristán's user avatar
1 vote
1 answer
133 views

How does erc725, erc735 deter identity fraud?

Specifically, How does erc725, erc735 deter identity fraud?
Nathan Aw's user avatar
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3 votes
1 answer
97 views

Representing biometric data with solidity variables -- bytes 32 perhaps? [closed]

would like to know which variable type comes closest to representing biometric binary data? Assuming computing storage and power grows exponentially and network latency can be further reduced, would ...
Nathan Aw's user avatar
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1 vote
0 answers
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solidity variables to store decentralized identities keys -- bytes32 sufficient for a ED25519 keys?

I am building a next generation decentralized identity solution. Would like to under which solidity variable is best suited to store decentralized identities keys -- bytes32 sufficient for a ED25519 ...
Nathan Aw's user avatar
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1 vote
0 answers
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Decentralized Identities (DIDs) with biometrics based instead of public key

is it possible to store and keep biometrics on evm and have this biometric validated through smart contracts? Say a erc 735 based contract? Since ones public keys and private keys are not the easiest ...
Nathan Aw's user avatar
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1 vote
1 answer
233 views

ERC725 adopting/extending ERC721 non fungibility attribute for unique decentralized identifier (DIDs) [closed]

Like the ERC20 standards, which is a great standard, I am imagining a future where there will be full of erc725 based token/identities. For decentralized identities to be unique, is there some way to ...
Nathan Aw's user avatar
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6 votes
2 answers
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ERC725 with ERC735 - Identity and Claims

How does ERC725 (Identity) and ERC735 (Claims) work together to enable a decentralized identity?
Nathan Aw's user avatar
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