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Успей повеселить себя обновленным с 13-00 время неописуемо Счастливых дней. Успей повеселить января глобально. Счастливые дни 2-ух итальянских.Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Start collaborating and sharing organizational knowledge. Create a free Team Why Teams? Learn more. Definition of blockchain height Ask Question. Asked 8 years, 4 months ago. Modified 3 years, 11 months ago. Viewed 11k times. Improve this question. Add a comment. Sorted by: Reset to default. Highest score default Date modified newest first Date created oldest first.
Improve this answer. Nate Eldredge Nate Eldredge This answer was used to create a tag-wiki for height. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. The code may differ if you're not programming in Javascript but the URL will be identical. Once the socket is opened, the JSON document describing the event of interest should be sent.
In addition to standard events, websockets accept a ping event. If you send the following, you will receive the same message back with "ping" replaced by "pong":. A regular ping i. In this example, using a WebSocket, we will subscribe to all pooled transactions new transactions that have not been confirmed. We open a new WebSocket and send the filter we're interested in.
Upon notification of new transactions, we format them and add them into the page. See above for all the different type of events you can listen to with a WebHook. To create a new WebHook:. To secure the endpoint at the callback URL you give to us and prevent a potential attacker from calling it, we recommend you append a secret as a URL parameter to that URL. We will call you leaving the URL unchanged, which allows you to test for that parameter.
The use of https is also recommended to prevent eavesdropper from potentially capturing the secret. A simple way to test a WebHook is to use curl and requestb. First go to requestb. For example to get every new block:. For an example of using WebHooks written in node.
If a WebHook fails to deliver 50 distinct events, the WebHook will be disabled. Our payment API is the easiest way to accept payments securely without the need to create accounts for your users. It's also a generic way to automatically transfer value from one address to another. The 2 main use cases are:. We do not take a fee on payment forwarding, other than the required 0. However as part of your own services, you can include a fee that will also be automatically transfered to your own address in the same transaction.
Note : by default, all payments will be debited with a 10, satoshis mining fee. The amount of the fee is configurable. But for very small payments, if the amount sent is even lower than the fees, the forward will fail. Any money sent to 16uKw A quick and easy way to test payments is to use curl to create a simple one without a callback replace with your own address :.
As previously mentioned, you may include an address you control to collect processing fees as part of your own service. The processing fee can be either a fixed fee in satoshis or a percentage of the whole amount. The mining fee will always be perceived on the processing fee if large enough. For security reasons, we do not keep any private keys, you are the only one who can sign transactions.
Using our API, creating a transaction from scratch is a 3-step process:. This is accomplished with two simple POST requests and a third one which allows you to push raw hexadecimal transactions:. A partially filled transaction is needed to create a full transaction. We require at least one input with a minimum of one address and at least one output with an address and value in satoshis.
You can also use a wallet name as input. This is equivalent to an array of all addresses in the wallet. This requires a user token. We build the full set of inputs using unspent transactions from the input address es or wallet and fill up a temporary, unsigned transaction. Passing a negative value like -1 will automatically generate a sweep , transferring the entire balance of the input address minus potential fees.
By default, we allow spending from unconfirmed transactions. So unconfirmed transactions may be used as inputs of your transactions. To disable spending from unconfirmed transactions and force the selection of only confirmed inputs, provide a "confirmations" property of value 1. Note that low transaction fees are automatically included as required to ensure your transaction will be relayed. Since the transaction is not yet complete yet, the transaction hash is a temporary one.
The final hash will be calculated and returned with the completed transaction. In this case, we use your inputs as provided and will not attempt to generate them from the address. Fees and change will still be inserted appropriately. The following example will create 2 inputs because 2 previous transactions must be used for the requested amount. It also creates 2 outputs, one for the required transaction and another for the change. When something is wrong with the provided transaction, the server will reply with a HTTP error code.
It will also return a JSON document that includes the transaction and an errors section listing the different issues that were encountered. If you're experiencing any difficulty, please check the returned errors. The most common issue is the absence of confirmed unspent outputs to build the transaction from. By default, spending unconfirmed transactions isn't enabled, so you may not be able to issue a 2nd transaction until the first has been confirmed.
To enable spending from unconfirmed transactions, in the partially filled transaction provided to the new endpoint add "confirmations: -1". The second most common issue is to use uncompressed public keys when compressed public keys were used to generate the address.
If the script generated can't be verified, try passing compressed public keys instead. No matter the type of transaction built, the change leftover from the inputs once all outputs are credited the requested amount will generally be credited to the address referenced in the first transaction input. An additional output will be created to set this up.
Fee calculation in cryptocurrencies can be complex. We provide 2 different ways for you to control the fees included in your transactions:. Fees are required for many transactions and you can't easily determine whether a transaction will require a fee. If you still want to generate a 0-fee transaction, use the "zero" preference to test whether it is valid first.
We will return an error if the transaction require a fee, at which point you can set the preference to a higher level accordingly. To learn more about fees, bitcoinfees. To facilitate testing and integration in cases where addresses only have low value which is very common for micro-transactions , we allow passing a private key so we can directly build, sign and send the transaction.
Passing a change address is also supported to mitigate long-term risks. In all other cases, passing only the public key and signing yourself is recommended for security reasons see security considerations. The simplest way to send a micro-transaction is the following, passing a hex-encoded private key again keep in mind that passing your private key is discouraged for everything but low-value wallets :. When it returns the transaction is guaranteed by our services.
The response will also include a hash property which is the hash of the broadcasted transaction. The same can be achieved securely for higher value addresses by providing the public key instead. You will have to sign the required data returned by the microtx endpoint to complete the transaction see Signing and Sending. Here is an example command-line session on bitcoin's testnet:.
When initiating a micro-transaction using the public key, the response to a POST on the endpoint will return an array of hex-encoded data that should be signed. The signatures should be sent back using the same request as previous, adding the signatures property send Signing and Sending for more details. Only the transaction value, the target address, your API token and one of the from pubkey, private or wif are required.
In general, sending any private key to an outside service is a bad security practice and is discouraged. However security and ease of use are often in opposition. When it comes to deciding whether to pass a private key for micro-transactions is a reasonable tradeoff, the following should be considered:.
Finally, the option of passing private keys is only offered because signing on the client side can be difficult depending on the environment. We hope that using this information, you will make the right tradeoff for your situation. Use your private key s to sign each of the data strings provided decode them to byte arrays and use ECDSA. Return the signatures as hex-encoded strings in a signatures array property inserted in the previous document.
Note: for multisig transactions, the pubkeys are already provided which each input so they should not be included again. Additionally, for each input the public key matching the input address must be provided because the input address cannot be calculated from the address.
In general, repeat the public key for the address provided in the transaction skeleton input. Here's an example showing how to sign the transaction in Javascript using the bitcoinjs library:. The same document will be returned with the finalized transaction. If no errors are returned, your transaction was successfully issued and broadcasted across the network.
See our full sample to issue a transaction on testnet from your browser. To protect yourself further from a potential malicious attack on our services, you may want to validate the data we're asking you to sign. Unfortunately it's impossible drectly as the data is hashed twice using SHA so you can't get back to the original transaction. Note that the Bitcoin signature algorithm does not necessarily preserve inputs. Inputs other than the one you're signing are usually empty and the input you're signing will have a different script.
Following is a full example using the command line or this gist for the full non-abbreviated session. The hashes returned on Mac OS may be wrong due to a bug in xxd. Note that if you simply want to generate a multisig address from the different public keys instead of a whole transaction, our address generation endpoint will help you do that.
For a multisig interaction to happen, first the multisig address has to be sent some money using a transaction that includes M public keys in its output. Then that transaction can be spent by another by repeatedly issuing the required N number of signature. The interaction can be broken down as follows:.
To spend the previous transaction, each party e. Alternatively, instead of having each party call our API, you may also share the hex string to sign and provide the required signatures all at once. Note that in all cases, the order in which the public keys are provided matters and should be consistent, as required for Bitcoin P2SH transactions. Remaining funds change will be sent back to the multisig address. See our full Javascript sample for how to issue a 2 out of 3 multisig transaction.
Note: if you're using a blockexplorer to check a transaction, be aware that blockchain. We recommend using our block explorer instead. Toggle navigation BlockCypher. Testing We faciliate the testing of your applications in 2 different ways: A BlockCypher test chain, supporting all our services as well as an automated faucet. An automated faucet for the bitcoin testnet. The only differences with the Bitcoin main chain are the following: The chain is private no data is broadcasted, only BlockCypher mines the transactions , making it much more predictable than the Bitcoin's testnet which is frequently under attack.
New blocks get built every minute, confirming the transactions that have been created using our transaction API. The prefix for standard addreses is 'B' or 'C' 0x1B. The prefix for multisig addresses is 'D' 0x1F. Can be retrieved either by block height or block hash. Page through results by passing the date of the oldest received transaction to a before URL parameter.
All details about a given transaction, including involved addresses, inputs and outputs. Can be used as a unique identifier. Note: miners rarely post accurate clock times. Our servers' time is continuously adjusted and accurate. Incremented by miners to allow variation in the header and hence its hash.
By default, we only return the 20 first transactions. Only exists for confirmed transactions. While hashes are reasonably unique, using them as identifiers may be unsafe. Hex encoded bytes of the raw transaction as sent over the network. Only included when the includeHex URL property is set to true. Unconfirmed transactions have 0 for confirmation. Can be high, medium or low.
If the transaction is a double spend, what transaction it's double-spending see Zero Confirmations. The number of peers that have sent this transaction to us see Zero Confirmations. Confidence this transaction will be confirmed see Zero Confirmations. Use paging to get more inputs see section on blocks with instart and limit URL parameters. Use paging to get more outputs see section on blocks with outstart and limit URL parameters. Does not exist for coinbase transactions.
Only present for unconfirmed transactions for now. Property Example abbreviated URLs and hashes Description value Value transferred by the transaction output, in satoshi. Hash of the transaction that spent this output, if it was spent. A wallet name can be used instead of an address, which will return aggregated summed details for all addresses in the wallet.
More comprehensive than the previous endpoint but slower as it returns more data. Can be negative if unconfirmed transactions are just spending. Only unconfirmed transactions haven't made it into a block are included. Only unconfirmed transactions haven't made it into a block are counted.
One of the transaction hashes for the specified address. It's a negative number for an output. It's a negative number for an input. Time at which the transaction was received by our peers. Public key.
Btc block height how much does a bitcoin atm cost
| My deposit 241 bitcoins 2021 | Miner Revenue per Hash. Bitstamp Net Flows. Instead, consensus is an emergent artifact of the asynchronous interaction of thousands of independent nodes, all following simple rules. Transaction Volume. Pools are open to any miner, big or small, professional or amateur. Selfish mining is a deceitful mining strategy that could allow blockchain attackers to control the outcome of cryptocurrency mining and rewards. |
| Satoshi 1 bitcoin atm | Example shows the output produced by running this script. For high-value btc, payment by bitcoin will still be convenient and efficient even if the buyer has to height block 24 hours for delivery, which would ensure confirmations. In the first chapter, we looked at a transaction between Alice and Bob for a cup of coffee. Some will be mining with a few tens of a kilowatt of electricity, others will be running a data center consuming a megawatt of power. Most nodes that receivewill already have blockas the tip of their main chain and will therefore link the btc block and extend that chain. A blockchain contains a series of sequential blocks, hence the name blockchain. In the blockchain, the most recent few blocks might be revised if there is a chain recalculation due to click fork. |
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| Bitcoin personal loan | Difficulty retargeting occurs automatically and on every full node independently. Orphan blocks are valid blocks block height btc are rejected from the blockchain because network lag allowed another block to be accepted first. Binance Net Flows. Alternatively, the merchant should use an escrow multi-signature account, again waiting for several confirmations after the escrow account is funded. In contrast, selling a more expensive item for bitcoin runs the risk of a double-spend attack, where the buyer broadcasts a competing transaction that spends the same inputs UTXO and cancels the payment to the merchant. |
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| Block height btc | Bitcoin future contracts |
| Bitcoin ethereum mining synology | 447 |
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Счастливые дни 2-ух итальянских. Счастливые дни отрегулировать велик. Ежели ты собственных руках.An additional output will be created to set this up. Fee calculation in cryptocurrencies can be complex. We provide 2 different ways for you to control the fees included in your transactions:. Fees are required for many transactions and you can't easily determine whether a transaction will require a fee. If you still want to generate a 0-fee transaction, use the "zero" preference to test whether it is valid first.
We will return an error if the transaction require a fee, at which point you can set the preference to a higher level accordingly. To learn more about fees, bitcoinfees. To facilitate testing and integration in cases where addresses only have low value which is very common for micro-transactions , we allow passing a private key so we can directly build, sign and send the transaction.
Passing a change address is also supported to mitigate long-term risks. In all other cases, passing only the public key and signing yourself is recommended for security reasons see security considerations. The simplest way to send a micro-transaction is the following, passing a hex-encoded private key again keep in mind that passing your private key is discouraged for everything but low-value wallets :.
When it returns the transaction is guaranteed by our services. The response will also include a hash property which is the hash of the broadcasted transaction. The same can be achieved securely for higher value addresses by providing the public key instead. You will have to sign the required data returned by the microtx endpoint to complete the transaction see Signing and Sending. Here is an example command-line session on bitcoin's testnet:.
When initiating a micro-transaction using the public key, the response to a POST on the endpoint will return an array of hex-encoded data that should be signed. The signatures should be sent back using the same request as previous, adding the signatures property send Signing and Sending for more details.
Only the transaction value, the target address, your API token and one of the from pubkey, private or wif are required. In general, sending any private key to an outside service is a bad security practice and is discouraged. However security and ease of use are often in opposition.
When it comes to deciding whether to pass a private key for micro-transactions is a reasonable tradeoff, the following should be considered:. Finally, the option of passing private keys is only offered because signing on the client side can be difficult depending on the environment.
We hope that using this information, you will make the right tradeoff for your situation. Use your private key s to sign each of the data strings provided decode them to byte arrays and use ECDSA. Return the signatures as hex-encoded strings in a signatures array property inserted in the previous document. Note: for multisig transactions, the pubkeys are already provided which each input so they should not be included again.
Additionally, for each input the public key matching the input address must be provided because the input address cannot be calculated from the address. In general, repeat the public key for the address provided in the transaction skeleton input. Here's an example showing how to sign the transaction in Javascript using the bitcoinjs library:. The same document will be returned with the finalized transaction.
If no errors are returned, your transaction was successfully issued and broadcasted across the network. See our full sample to issue a transaction on testnet from your browser. To protect yourself further from a potential malicious attack on our services, you may want to validate the data we're asking you to sign. Unfortunately it's impossible drectly as the data is hashed twice using SHA so you can't get back to the original transaction.
Note that the Bitcoin signature algorithm does not necessarily preserve inputs. Inputs other than the one you're signing are usually empty and the input you're signing will have a different script. Following is a full example using the command line or this gist for the full non-abbreviated session.
The hashes returned on Mac OS may be wrong due to a bug in xxd. Note that if you simply want to generate a multisig address from the different public keys instead of a whole transaction, our address generation endpoint will help you do that. For a multisig interaction to happen, first the multisig address has to be sent some money using a transaction that includes M public keys in its output.
Then that transaction can be spent by another by repeatedly issuing the required N number of signature. The interaction can be broken down as follows:. To spend the previous transaction, each party e. Alternatively, instead of having each party call our API, you may also share the hex string to sign and provide the required signatures all at once.
Note that in all cases, the order in which the public keys are provided matters and should be consistent, as required for Bitcoin P2SH transactions. Remaining funds change will be sent back to the multisig address. See our full Javascript sample for how to issue a 2 out of 3 multisig transaction.
Note: if you're using a blockexplorer to check a transaction, be aware that blockchain. We recommend using our block explorer instead. Toggle navigation BlockCypher. Testing We faciliate the testing of your applications in 2 different ways: A BlockCypher test chain, supporting all our services as well as an automated faucet. An automated faucet for the bitcoin testnet.
The only differences with the Bitcoin main chain are the following: The chain is private no data is broadcasted, only BlockCypher mines the transactions , making it much more predictable than the Bitcoin's testnet which is frequently under attack. New blocks get built every minute, confirming the transactions that have been created using our transaction API. The prefix for standard addreses is 'B' or 'C' 0x1B.
The prefix for multisig addresses is 'D' 0x1F. Can be retrieved either by block height or block hash. Page through results by passing the date of the oldest received transaction to a before URL parameter. All details about a given transaction, including involved addresses, inputs and outputs. Can be used as a unique identifier.
Note: miners rarely post accurate clock times. Our servers' time is continuously adjusted and accurate. Incremented by miners to allow variation in the header and hence its hash. By default, we only return the 20 first transactions. Only exists for confirmed transactions. While hashes are reasonably unique, using them as identifiers may be unsafe. Hex encoded bytes of the raw transaction as sent over the network.
Only included when the includeHex URL property is set to true. Unconfirmed transactions have 0 for confirmation. Can be high, medium or low. If the transaction is a double spend, what transaction it's double-spending see Zero Confirmations. The number of peers that have sent this transaction to us see Zero Confirmations. Confidence this transaction will be confirmed see Zero Confirmations.
Use paging to get more inputs see section on blocks with instart and limit URL parameters. Use paging to get more outputs see section on blocks with outstart and limit URL parameters. Does not exist for coinbase transactions. Only present for unconfirmed transactions for now.
Property Example abbreviated URLs and hashes Description value Value transferred by the transaction output, in satoshi. Hash of the transaction that spent this output, if it was spent. A wallet name can be used instead of an address, which will return aggregated summed details for all addresses in the wallet.
More comprehensive than the previous endpoint but slower as it returns more data. Can be negative if unconfirmed transactions are just spending. Only unconfirmed transactions haven't made it into a block are included.
Only unconfirmed transactions haven't made it into a block are counted. One of the transaction hashes for the specified address. It's a negative number for an output. It's a negative number for an input. Time at which the transaction was received by our peers. Public key. Private key. Wallet import format, a common encoding for the private key. Key Example Description event "event": "new-block" Type of event to receive. See above for the supported event types. The hash can either be for a block or a transaction.
If used, it requires a user token. A wallet name can also be used instead of an address, which will then match on any address in the wallet. Property Example abbreviated URLs and hashes Description id deeecbfbc Identifier of the payment forwarding, generated when a new payment is created. Allows you to perceive a fee for your own services. A satoshi amount or percentage are required if specified. A fixed satoshi amount or a percentage is required if a processing fee address has been provided.
Automatically sets up a WebHook. Default to 10, The transaction hash that credited the input address. The transaction hash of the generated transaction that forwards the payment from the input address to the destination. Returns the completed transaction and transmits it over the network. Does not do any additional processing does not push.
If the generation is successful, nothing will appear. Hex-encoded public key to send the coins from. Hex-encoded private key to send the coins from. WIF encoding of the private key to send the coins from. Defaults to the address calculated from the input public or private keys. If false will return as soon as the transaction is broadcasted. Sent in reply to a micro-transaction passing the pubkey. The hash of the finalized transaction, once sent.
Signing and Sending Multisig Back to Top. Returns the current state of the specified block chain, including height and the two latest blocks. All details about a given block, including transaction hashes. An array of the latest unconfirmed transactions received. The depth is the distance from the latest block in the chain, or how many blocks have been found after this one. The total amount in satoshis transacted in this block.
The time BlockCypher's servers receive the block. Number used to generate this block. To retrieve base URL transactions. Array of transaction hashes included in this block. Hash of the transaction. Number of subsequent blocks, including the block the transaction is in.
How likely is this transaction to make it to the next block, reflects the preference level miners have to include this transaction. Whether the transaction is a double spend see Zero Confirmations. Unconfirmed transactions only. Array of inputs, limited to Array of outputs, limited to Hash of the transaction for which an output is being spent by this input.
Index in the previous transaction of the output being spent. Value of the output being spent. Number of confirmations since the transaction referenced by this input was included in the blockchain. Returns a newly generated address with the corresponding public and private keys or calculate the multisig address from a set of public keys.
Balance on the specified address, in satoshi. Balance of unconfirmed transactions for this address, in satoshi. Number of confirmed transactions on the specified address. Number of unconfirmed transactions for this address.
How likely is the transaction to make it to the next block, reflects the preference level miners have to include this transaction. A new address is generated similar to Address Generation and associated it with the given wallet. Only objects with a matching hash will be sent.
Only transactions associated with the given wallet will be sent. Only transactions associated with the given address will be sent. Only transactions with an output script of the provided type will be sent. The address the payment should be made to to be forwarded, generated when the payment forwarding is created. Address to forward processing fees to, if specified. Fixed processing fee amount to be sent to the fee address. Catch up with the latest news from 60 biggest crypto outlets.
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Broadcast transaction. Halving countdown. Get Blockchair extension. Blockchair brings the search engine for 17 blockchains to your browser. Node explorer. Learn about node accessibility, locations, consensus and more. For partners. For developers. Explorers Features Settings Other. Charts Bitcoin Bitcoin blockchain size chart. Same chart for other blockchains. Bitcoin Cash charts Blockchain size. Bitcoin SV charts Blockchain size.
