Pascal Coin, referred to as: PASC, is a completely original cryptocurrency with a pioneering new technology Safebox. It is the first cryptocurrency to break the 100 transactions per second barrier, and PascalCoin's architecture is somewhat original in terms of large-scale smart contracts in the form of a second-layer protocol. Written in Pascal language, it has anti-double spending mechanism, non-ICO, and no pre-mining. Its operating mechanism is similar to a bank account, and the wallet address is short and easy to remember.

PASC underwent a hard fork on the morning of November 15, 2018, and the algorithm was upgraded. Currently, it only supports CPU and graphics card mining. In addition, it does not currently support eth dual mining pasc.

Project Introduction

PascalCoin is a new type of encrypted currency that can delete the blockchain technology. There is no need to save operation history, no need to worry about double spending, you can directly check the account balance, and generate new blocks through "safe hash", each block 5 accounts. By updating the account, you can delete the entire block without worrying about double spending, non-ICO, no pre-mining, its operating mechanism is similar to a bank account, easy to remember, and written in Pascal language.

It uses the safebox function to modify the hash value every time a new block is generated. Using Pascal does not require the end user to download a blockchain containing historical operations. The income and expenditure information is included in the blockchain. In each block, even if the block chain is deleted, it will not affect the progress of the transaction, thus simplifying the transaction process. Since it does not need to decipher the super long sequence of random numbers/letters, but is equipped with an account number containing income and expenditure information (up to 10 digits), the experience is closer to the traditional bank transfer method, which is simpler and easier to understand. User acceptance is higher. This novel cryptocurrency can effectively narrow the distance between advanced blockchain technology and the general public.

Technical Overview

PASC is written in Pascal language, and the mining algorithm is SHA2-256D. Currently, BK-B mining machines support this algorithm for mining. PascalCoin contains a lot of new features, looks very close to the banking system, and at the same time incorporates related cryptography functions.

Pascal Coin uses two databases of "account" and "operation" at the same time. The account database is called SafeBox, which saves the balance of each account. It calls itself an "infinite expansion" solution at the transaction data level. , only the last 100 blocks are kept, and the content of past transaction data blocks will be discarded, so the size of his block database is almost fixed, and the storage space occupied is very small. Set a checkpoint every 100 blocks and archive it in SafeBox. Compared with the way the Bitcoin system uses UTXO, SafeBox will of course grow with the increasing number of accounts, but its growth rate is almost can be ignored.

The designer superimposed an account on top of the traditional public key/private key. This account is composed of several numbers and horizontal lines. There are no obscure uppercase and lowercase letters interspersed inside, and the readability is very good. , similar to a bank card number, easy to remember, and you can also set a name similar to "domain name" and "e-mail address" for your account to promote externally and accept payment;

Using a 0-confirmation transaction system, the average block time of Bitcoin is 10 minutes, so at least one block confirmation is usually considered a valid transaction. Pascal Coin adopts some different methods. First, PascalCoin It is not based on the design of the UTXO model. Funds are transferred from the account balance. If there is still a balance in the account, it is meaningless for the consumer to initiate a double-spend attack, because his account balance will be transferred twice. Secondly, PascalCoin A "double spend detection service" is planned to be launched. Merchants will be able to use this service to detect whether there is double spend in the nodes of the entire network when they receive a 0-confirmed transaction, and return the result within 5-10 seconds. If confirmed If it is not found, then the merchant can almost be sure that the 0-confirmation transaction can be packaged and accepted by the miners.

Related Links:

http://www.pascalcoin.org/

https://info.binance.com/cn/currencies/pascal-coin

https://www.pascalcoin.org/storage/whitepapers/PascalWhitePaperV5_Chinese.pdf