ARPA Network (ARPA) is a decentralized secure computation network built to improve the fairness, security, and privacy of blockchains. ARPA threshold BLS signature network serves as the infrastructure of verifiable Random Number Generator (RNG), secure wallet, cross-chain bridge, and decentralized custody across multiple blockchains.
ARPA was previously known as ARPA Chain, a privacy-preserving Multi-party Computation (MPC) network founded in 2018. ARPA Mainnet has completed over 224,000 computation tasks in the past years. Our experience in MPC and other cryptography laid the foundation for our innovative threshold BLS signature schemes (TSS-BLS) system design and led us to today’s ARPA Network.
Randcast, a verifiable Random Number Generator (RNG), is the first application that leverages ARPA as infrastructure. Randcast offers a cryptographically generated random source with superior security and low cost compared to other solutions. Metaverse, game, lottery, NFT minting and whitelisting, key generation, and blockchain validator task distribution can benefit from Randcast’s tamper-proof randomness.
Different versions of Solidity are used:
- Version used: ['^0.6.0', '^0.6.2']
- ^0.6.0 (#5)
- ^0.6.2 (#91)
- ^0.6.0 (#235)
- ^0.6.0 (#317)
- ^0.6.0 (#470)
Use one Solidity version.
Additional information: link
Address.sendValue(address,uint256) (#141-147) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#192-194) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#202-205) is never used and should be removed
Address._functionCallWithValue(address,bytes,uint256,string) (#207-228) is never used and should be removed
Address.functionCall(address,bytes,string) (#177-179) is never used and should be removed
Address.functionCall(address,bytes) (#167-169) is never used and should be removed
Remove unused functions.
Additional information: link
Address._functionCallWithValue(address,bytes,uint256,string) (#207-228) uses assembly
- INLINE ASM (#220-223)
UpgradeableProxy._implementation() (#280-286) uses assembly
- INLINE ASM (#283-285)
TransparentUpgradeableProxy._setAdmin(address) (#450-457) uses assembly
- INLINE ASM (#454-456)
TransparentUpgradeableProxy._admin() (#439-445) uses assembly
- INLINE ASM (#442-444)
UpgradeableProxy._setImplementation(address) (#301-310) uses assembly
- INLINE ASM (#307-309)
Address.isContract(address) (#114-123) uses assembly
- INLINE ASM (#121)
Proxy._delegate(address) (#23-43) uses assembly
- INLINE ASM (#25-42)
Do not use evm assembly.
Additional information: link
TransparentUpgradeableProxy.constructor(address,address,bytes)._admin (#346) shadows:
- TransparentUpgradeableProxy._admin() (#439-445) (function)
BEP20UpgradeableProxy.constructor(address,address,bytes).admin (#475) shadows:
- TransparentUpgradeableProxy.admin() (#383-385) (function)
Rename the local variables that shadow another component.
Additional information: link
TransparentUpgradeableProxy.upgradeToAndCall(address,bytes).newImplementation (#429) lacks a zero-check on :
- (success) = newImplementation.delegatecall(data) (#432)
UpgradeableProxy.constructor(address,bytes)._logic (#255) lacks a zero-check on :
- (success) = _logic.delegatecall(_data) (#260)
Check that the address is not zero.
Additional information: link
Modifier TransparentUpgradeableProxy.ifAdmin() (#366-372) does not always execute _; or revert
All the paths in a modifier must execute _ or revert.
Additional information: link
Pragma version^0.6.2 (#91) allows old versions
solc-0.6.4 is not recommended for deployment
Pragma version^0.6.0 (#5) allows old versions
Pragma version^0.6.0 (#470) allows old versions
Pragma version^0.6.0 (#235) allows old versions
Pragma version^0.6.0 (#317) allows old versions
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.
Additional information: link
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#207-228):
- (success,returndata) = target.call{value: weiValue}(data) (#211)
Low level call in Address.sendValue(address,uint256) (#141-147):
- (success) = recipient.call{value: amount}() (#145)
Low level call in UpgradeableProxy.constructor(address,bytes) (#255-263):
- (success) = _logic.delegatecall(_data) (#260)
Low level call in TransparentUpgradeableProxy.upgradeToAndCall(address,bytes) (#429-434):
- (success) = newImplementation.delegatecall(data) (#432)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Unable to find audit link on the website
Token is not listed at Mobula.Finance
Additional information: link
Unable to find Youtube account
Unable to find Discord account