区块链合约地址是什么意思,区块链合约地址怎么用

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⑴ What is a contract address

Using the Solidity programming language, it consists of a set of codes (functions of the contract) and data (state of the contract). For example, when issuing a contract on Ethereum For ERC20 coins, a contract account is created. This generated address is the contract address and does not have a private key.

There are two types of Ethereum accounts:

One is an external account generated by an individual user using an Ethereum wallet, which consists of a public key and a private key.

The other is a contract account. The contract is located at a special address on the Ethereum blockchain.

External address:

The external address is the IP and port of the server that the computer is connected to. Different ports provide different services. The first one is the protocol. It doesn’t mean that your browser connects to that, including but not limited to. The browser's port defaults to 80.

Some other running software will also connect to the remote server to obtain or submit data. The specific software can be traced according to the PID number at the end. Open the task manager and check the PID column. The port is connected to the software corresponding to the PID.

⑵ What does the contract address mean?

The contract address refers to the address contained in the contract account. Specifically, it refers to the user’s address on a public blockchain that supports smart contracts. A contract-type account is created. This type of account is composed of a contract address and a savings code. In addition, an external account can be created on the public blockchain that supports smart contracts. The external account is composed of a public key and a private key.

Introduction to some public chains of the blockchain

1. Ethereum: Ethereum is one of the most famous public chains in the world, and the Ethereum platform has also created a platform that can The token used on the platform is called Ether, which is supported by the Singapore Treasury;

2. Xiaoyi: Xiaoyi is NEO, which was officially launched in 2016. Xiaoyi is the first cryptocurrency in China. An original public chain;

3. Quantum Chain: Quantum Chain is committed to creating a simple and practical blockchain ecosystem that can be used on mobile devices;

4 , Metaverse: Metaverse is a public chain project created by a Swiss foundation after investing in the Weiyou team. Users can issue digital assets on Metaverse, thus realizing the blockchainization of the business model.

⑶ bk wallet contract address

The wallet contract address can be understood as the transfer-in and transfer-out address symbol of the digital wallet.
To put it bluntly, a wallet on the blockchain is a tool for managing digital assets (what we usually call coins). The transfer of your coins in and out, as well as the records of transfers in and out, are all achieved through the wallet. Just like you need a home address when you go home, digital currency also needs a home address. The difference is that digital currency addresses are unique. Once you have an address, others can transfer money to you.

⑷ The difference between contract address and wallet address

The difference between a contract address and a wallet address is whether it is composed of a key. The accounts generated by the wallet address are generally external accounts, and the keys are public keys and private keys; and the contract address, that is, the contract An account is composed of a special language, which can be called a special address on the blockchain, and has no private key.

Contract address query method

If you want to query the contract address, you can choose the online query method.

1. Enter the browser, enter the URL to query the contract address, and click "Transfer";

2. After successfully entering the official website, find the contract address section and enter the details of this section Just search the page. It should be noted that this query website belongs to an external network and the pages are all in English. If your personal English level is not high, you can choose to use translation software to translate it into a language you can understand before searching; < /p>

3. The query also has a focus, mainly focusing on the total number of addresses and total circulation.

Official website query is the most authoritative, but there are other methods. For example, some foreign software also has this service.

⑸ busd contract address

The contract address can be found on the busd official website. BUSD is a U.S. dollar-backed stable asset issued and hosted by Paxos Trust Company and regulated by the New York State Department of Financial Services. BUSD is sold directly on Paxos.com at a 1:1 price and will be listed for trading on Binance.
Extended information
1. What is a contract address?
There are two types of Ethereum accounts: one is an external account generated by an individual user using an Ethereum wallet, consisting of a public key and a private key; the other is a contract account, which uses the Solidity programming language and consists of a set of codes (contract Function) and data (contract status). For example, issuing ERC20 coins on Ethereum creates a contract account. This generated address is the contract address and does not have a private key. The contract is located at a special address on the Ethereum blockchain.
2. What is the use of the contract address of a coin?
The contract address of a coin can be used to view specific information such as the balance of the token, as well as the detailed contract content. Essentially, a token contract is a smart contract that contains a mapping of account addresses and their balances. The account balance represents a value defined by the contract creator: a token contract might use the balance to represent a physical object, or to represent the value of another currency, or to represent the reputation of the holder. The unit of balance is usually called a token.
When tokens are transferred from one account to another, the token contract updates the balances of both accounts. If the token contract allows it, there are two options for changing the overall number of tokens. The total number of tokens can be increased by minting new tokens. For example, castingThe desired token goes to the specific contract address. Another way to destroy the token is to send the token to an address where the private key has not been created, usually the 0 address. This makes these tokens unusable, in that respect it has the same effect as destroying tokens, but does not reduce the total number of tokens. A simple token contract holds the above information in a mapping from addresses to balances. When more complex scenarios arise, such as dividends, alternative or supplementary structures tend to be stronger.

⑹ What does the token contract address mean?

The token contract address refers to a set of data and codes (the data represents the status of the contract, and the code is the explanation Contract function), use the contract account address created by Solidity in Ethereum.

Types of Ethereum accounts

1. External accounts created by individual users using Ethereum wallets. The external accounts consist of private keys and public keys;

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2. Contract account: As introduced above, the token contract is a smart contract that includes user account address and balance mapping. The contract account is at a special address on the Ethereum blockchain and does not have a private key.

Advantages of token contracts

1. The digital currency trading market is open year-round, with no price restrictions;

2. The token contract supports long and short two-way transactions, and allows for When choosing high leverage, the spot market conditions are copied, and the asset liquidity and capital utilization rate are greatly improved;

3. The higher the leverage of the token contract, the smaller the required initial margin ratio. Characteristics, that is to say, the entry threshold for investors is low, and there is the possibility of making big gains with small things.

To sum up, the token contract is a magnifying glass that can magnify profits, risks, and losses. Investors need to fully understand before choosing to enter the market.

⑺ [Blockchain] What is a Bitcoin address?

A Bitcoin address is a string of letters and numbers. The 26-bit to 34-bit string looks a bit like gibberish. But it is your personal Bitcoin account, equivalent to your bank card number. Anyone can transfer Bitcoin to you through your Bitcoin address.

Unlike the Bitcoin private key, it will not cause the loss of Bitcoins due to information leakage, so you can safely tell anyone your Bitcoin address.

Each block can be viewed through the blockchain browserAll transfer transaction records of the Bitcoin address.

Commonly used Bitcoin blockchain browsers include:
https://btc.com/block
https://www.blockchain.com/zh-cn/explorer

Our commonly used Bitcoin address formats generally include the following four types.

1. BASE58 format
BASE58 format is a common Bitcoin address format, usually starting with 1.

For example:

2. HASH160 format
The HASH160 format is the result of calculating the SHA256 signature of the 130-bit public key using the RIPEMD160 algorithm.

For example:

3. WIF compression format
WIF compression format is the wallet input format. It is the result of compressing the BASE58 format into a 130-bit public key format. This is the most The original Bitcoin public key calculated by the ECDSA algorithm.

For example:

4. 60-bit public key format
The 60-bit public key format is the result of compressing a 130-bit public key.

For example:

Bitcoin is based on mathematical cryptography. The great master Satoshi Nakamoto used the elliptical encryption algorithm (ECDSA) to generate the private encryption of Bitcoin. key and public key.

The public key can be calculated from the private key. The value of the public key will be used to obtain the Bitcoin address after a series of digital signature operations.

Bitcoin addresses are randomly generated by algorithms, so some people will ask, since they are all randomly generated, will Bitcoin addresses be repeated? Regarding this issue, there is probably no need to worry.

Because the length of Bitcoin’s private key is a 256-bit binary string, the probability that two randomly generated private keys will be exactly the same is one in 2^256 ≈ 10^77. This number is as big as yours It is simply unimaginable that the probability is much smaller than winning the lottery; so don’t worry, everyone’s Bitcoin address is unique.