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Adopting airSlate SignNow’s eSignature any company can increase signature workflows and eSign in real-time, providing a greater experience to clients and workers. Use signature EPUB in a few simple actions. Our mobile apps make work on the go achievable, even while offline! Sign signNows from any place worldwide and close trades quicker.
Follow the step-by-step guideline for using signature EPUB:
- Log on to your airSlate SignNow account.
- Find your needed form in your folders or import a new one.
- Access the document adjust using the Tools menu.
- Drop fillable areas, add text and eSign it.
- List numerous signers by emails configure the signing sequence.
- Specify which individuals can get an signed copy.
- Use Advanced Options to reduce access to the document and set an expiry date.
- Click on Save and Close when completed.
Moreover, there are more innovative capabilities accessible for signature EPUB. List users to your shared work enviroment, view teams, and keep track of cooperation. Numerous users all over the US and Europe concur that a solution that brings people together in a single unified workspace, is exactly what enterprises need to keep workflows performing smoothly. The airSlate SignNow REST API enables you to integrate eSignatures into your app, internet site, CRM or cloud storage. Check out airSlate SignNow and get quicker, easier and overall more productive eSignature workflows!
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How can I open an EPUB file?
Open airSlate SignNow Digital Editions (ADE) on your Windows or Mac computer. Go to File > Add to Library. Find the saved EPUB or PDF file on your computer. By default, files are saved to your computer's "Downloads" folder. Double-click an ebook to start reading, or follow these steps to transfer it to an ereader. -
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Convert eBook File to PDF. Click on "Add File" and select the ePub file that you want to convert. ... Add the eBook File. ... Convert the e-book File to PDF. -
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If you use Windows 10, Microsoft Edge can display EPUB files natively. If Edge isn't already set up as the default program to handle EPUB files, right-click on the file, point to the \u201cOpen With\u201d menu, and then click the \u201cMicrosoft Edge\u201d option. -
What is the best EPUB Reader for Windows 10?
10 Best Windows Epub Readers (2020) Calibre. Calibre is one of the oldest and the best Epub reader for your Windows machine. ... Icecream Epub Reader. ... Cover. ... Kobo. ... Nook. ... airSlate SignNow Digital Editions. ... Freda. -
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Tap the attachment icon to download it to your device, and you'll see the icon turn into an iBooks one. Tap and hold on the file and an \u201cOpen in iBooks\u201d will pop up. Tap that, and your iPad or iPhone will open iBooks and then open the epub file you just sent. -
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Choose "EPUB to PDF" Go to the website of EPUB Converter, and click on "EPUB to PDF Converter" under the "EPUB Converter" tab. Convert EPUB File to PDF. In this case, click on "Add File" and choose the EPUB file on your computer. When you're done, click on the "Start Upload" button. -
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EPUB Format EPUB is a common ebook format around the web, but the Kindle can't read it natively. That's okay; you can convert . epub files to Mobi files for the Kindle to read. The key is a free piece of software called Calibre. -
Is EPUB compatible with Kindle?
EPUB is a common ebook format around the web, but the Kindle can't read it natively. That's okay; you can convert . epub files to Mobi files for the Kindle to read. The key is a free piece of software called Calibre. -
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No Epub support means not having to maintain yet another rendering engine so the ebooks can be displayed, and it means not having to tell users that yes the Kindle supports Epub - just not the DRMed ebook the user has. ... (Other services will take an Epub and send it to your Kindle, but not Amazon). -
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If you want to select one specific file, click Add books from a single directory, then find the file and select it. Once you have added the ebook to your Calibre library, select it, then click Convert books. -
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Select the ePUB file you want to convert to PDF. Select the ePUB file to highlight it, then select Convert books to open the Convert dialog box. Set the Output format to PDF. ... Select your PDF file, then select Save to disk to save the PDF file to a folder on your computer, removable media, or cloud account. -
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hello everyone and welcome to this session of blockchain my name is Sora and I'm part of the Sylvian team so let's get started so what's in it for you today we are here to understand the concepts of why do we need blockchain what is Bitcoin and blockchain how does blockchain work concepts around blockchain like sha 256 encryption public and private key distributed public ledger concept the proof of work and mine then we will also look at different applications of blockchain in different industries who uses blockchain and a demo now why we need blockchain imagine there are two entities a and B living far away and want to transfer money to each other one is in America and one is in Asia as of today in order to transfer the money they rely on a third party on which they have to trust now what are the possible results by doing this way any transaction there are high transaction fees associated with it there could be problem of double spending they could be internet based frauds and poor data recovered now let's see what does all these means high transaction fee for any transaction bank will charge a relatively very high amount of transaction fee as compared to what as of today cryptocurrency charges double spending double spending is a digital error where money can be spent twice from your account so for example if you have $800 in your account and you might end up spending thousand dollars which is an invalid transaction hackers might attack financial institutions and gain unauthorized access to steal your money poor data recovery retrieving loss data is very difficult in a centralized system as there is only a single copy of information but as compared to the distributed databases the distributed ledger technology like blockchain it is easy as the information is distributed across multiple nodes now these problems can be solved using Bitcoin and blockchain technology and we will see how so let's first understand what is Bitcoin and blockchain bitcoin bitcoin is a digital currency we is used to send and receive money across the world it is a barrier-free currency in a decentralized manner with minimum transfer fee or we can say it's gonna be relatively very very less as compared to what bank charges it doesn't involve a third party no intermediate reason involved thereby reducing the cost of transaction fast and cheap transfer is possible personal information identity of a user is hidden and all the transactions are cryptographically secure as they are being signed using your private Bitcoin does this by storing and transacting the money over a distributed peer-to-peer network called blockchain so therefore it becomes very important for us in order to understand if how Bitcoin works we also need to understand what is blockchain because that is the underlying technology so what is blockchain blockchain is a distributed database of immutable records called blocks which are secured using cryptography now here we can see once the data is recorded it cannot be changed it cannot be altered and that is the attribute of immutability of blockchain a block is a record book which contains the details of transactional data every block is given an aggregated set of transactions to be validated verified and added to itself so basically a block consists of four primary details which we will take a look at it contains the hash of a previous block it contains an aggregated list of transactions it also contains the value of nonce and the hash for the block itself which itself is like a digital signature of the block so hash of previous block it holds the hash value of the previous block to which it is connected contains details of several transactions which are aggregated in this block nonce nonce is a random number a random value which is generated to derive a hash value which should be less than the target decided for the block and hash is alpha numeric value which is used to identify the itself and it is Union now let's deep dive into blockchain blockchain creates a chain of blocks as we can see here in a blockchain the previous hash value of a block is always equal to the hash value of its previous block as we can see here the previous hash value of block number two is 23 a which is the hash value of block 1 also the previous hash value of block 1 is 0 because it is the first block in the blockchain and it is called the Genesis block so the first block is called the Genesis block and does not have any previous hash value so consider an example now where a person tries to tamper the block block number 2 then he will try to change the hash of block number 2 will change there by the previous hash value of block number 3 now does not stand valid now the hash value of block 2 and block 3 does not match which will make the following blocks the blocks ahead of block number 2 invalid now this particular feature of blockchain helps us eliminate data tampering now let's see how does blockchain work Jack wants to send money to Elsa the requested transaction of Jack wanting to send money to Elsa will be sent to all the peer nodes on the network of computers now the transaction sent to loads is verified by a set of people of a typical set of nodes called miners once verified the transaction is combined with other transactions to create a new block in the blockchain and as a result the receiving party Elsa receives the amount in blockchain a transaction could be for a cryptocurrency for data or any kind of asset so the transaction can be for any digital asset which holds value on the network now let's take a look at what are the typical features of blockchain these are typical features of blockchain it involves sha-256 algorithm based encryption proof of work consensus algorithm usage of public and private key in order to sign the messages on the network the role of minors in order to validate and verify the transactions and how to create a now a distributed public ledger now what is sha-256 encryption for a transaction block chain uses cryptographic keys to secure identities and hash function to make the blockchain unalterable so cryptographic keys includes two kind of keys private and public key and it uses a hash function which includes sha-256 now as such a 256 stands for the number of bit it takes up in memory secure hashing algorithm no hash function takes an input data and always return an alphanumeric output of 64 characters which is 256 bits so as you can see over here if you field any data like we are here feeding an example of welcome to simply learn the hashing function will return you 256 bit value and now that hash value is unique the value returned by a hash function is called hash value it is impossible to decode the original message using the hash value itself so hash value does not discloses the original message in the hash function a minor change in the input data will result in a different hash value and that is the unique feature of the hashing function you make a small change and the hashing value will change all together completely now sha-256 is a one-way function you give an input pass it through the hashing function you get the output but the reverse is not possible so in simple terms decrypting back the original text is not possible using sha 256 which makes it very very secure now cryptography uses public and private trees to encrypt and decrypt data but a private key is always kept secret with the user so if I have to send a message to someone I will sign it with my private key which is secret to me but I will share my public key in order for users to decrypt the message and validate that yes the sender of the message is me so in the blockchain network public key can be shared with all the Bitcoin users in order to do the transaction so let's take a look what is that the entire verification process so when you initiate a transaction it is passed through a hashing function which in our case is sha-256 the output is passed through a signature algorithm with the user's private key again and then we receive a digitally signed document so that hashing output plus my private key is used to generate a digitally sign document which is then floated on the network with my public key then the encrypted output is distributed to the Bitcoin network using the public key so the digitally signed document and the public key is used by the miners to verify the transaction and once that is done they include the transaction on the block and the transaction is then Mazdas completely so what is distributed public ledger a blockchain is a distributed ledger in which the digital data is recorded and verified by each node for preventing tempering of data so if you can see over here we have a network of nodes among these knows few might be the miners who are taking the responsibility of verifying and validating the transactions on each block and in lieu of that verification they will be rewarded so we will see when you're really talking about mine so let's take an example over here jack is sending ten BTC su l Elsa now which is verified by John in the network John is the miner now once the transaction is verified by John the result is being broadcasted is transferred to other nodes as a result the block becomes valid and gets added to the blockchain and once it is transferred to other nodes the ledger of each nodes record this transaction and all the ledgers now have the same information on the network who note only a valid transaction is propagated across the Bitcoin users while if any invalid transaction is identified it is discarded at the first node itself which received it now if any user tries to tamper the data every user in the blockchain maintains a copy of the ledger as I said once the transactions are verified they are distributed across the nodes all the Ledger's are updated now if someone goes back in the blockchain and tries to tamper the data in one of the blocks the other nodes will be able to identify the invalid block and will discard it so if anyone tries to modify the data the alternate transaction copies with other users will negate the alteration now let's take a look at of the proof of work algorithm proof of work is a consensus algorithm which is used in the Bitcoin network it is the process to determine a number called as nonce along with the cryptographic hashing algorithm to produce a hash value lower than the predefined target for the block so if you see over here the miners main task is to identify the nonce which is the random number in order to generate the hash value which is less than the target now generally the target is something like the hash value should have leading zeros like here in the example we can see it is having leading zeros of two leading zeros so in order to generate a hash value with leading zeros like 2 or 3 it takes huge amount of computing power for the - to determine that so in order to determine the nonce the miners need to try about 20 points 6 quadrillion norms values to get a 1 valid hash now how it works transaction data is distributed across the users of Bitcoin network miners will validate the unverified transactions add them to the block that is their task to do so miners compete to solve a difficult mathematical puzzle which is the generation of the nonce value based on cryptographic hashing function and this whole process is known as proof of work the first miner who solves the puzzle gets rewarded and this is the purpose for which the miner has made the investment in the hardware in the computing power the energy which the mining machine is consuming in order to get the reward once the minor has verified the block it is added to the blockchain now let's take a look at the process using the sha-256 you generate a hash value use nonce as an input to the hashing function if the hash value is less than the target know then you modify the nonce value you repeat this activity if it is less than the target value yes then you are deemed to get the reward your puzzle is solved node in the Bitcoin network the target is adjusted every 2016 blocks so as I mentioned the target of having leading three zeros or having leading four zeros that is revised after every to zero once it's blocked on an average a block is mined every ten minutes the difficulty of the puzzle is maintained in such a way that it never deviates too much from the average time taken to mine a block now candidate block proof-of-work so let's consider an example where a miner jack is competing to validate the block number thousand now while Jack was mining clock number thousand he was also listening for new transactions so in the transaction pool the transaction are stored they are basically parked until they get verified and gets included in a new block now unfortunately before Jack could mine thousand someone else minded and earn the reward now block thousand has a valid proof of work now it is a verified block so now Jack will start constructing a candidate block which will be known the subsequent block sequential thousand won by gathering the unverified transaction now from the transaction pool so jack has now started creating a candidate block pulling the transactions from the transaction pool into block number thousand one the current block now is the candidate block because it has not been validated and does not have any proof of work yet this block 1001 it's validated once any minor succeeds in solving the proof of work it could be Jack or it could be again someone else completing mining in blockchain when the transaction contained a considered confirmed a new block is added to the existing blockchain and the bitcoins concerned in the action now can be spent now as of today the miner who solves a puzzle gets a reward of 12.5 bitcoins the amount of Bitcoin rewarded for each block added to the blockchain is half for every 2 lakh 10000 blocks which is approximately every 4 year so this is called the huffing concept of Bitcoin so approximately whenever the Fourier threshold will be reached the reward will get reduced to six point two five bitcoins now let's take a look of applications of blockchain in different industries voting blockchain is a is a very trustworthy mechanism which has increased transparency in the voting process supply chain uses the attributes of blockchain of provenance and traceability to detect to identify and trace the supply of any asset from its point of origin to its final destination and if in due course any defect is detected it can easily identify where in the journey of the asset the defect was generated insurance has a huge adoption they are utilizing blockchain for eliminating forgery and preventing false claims as all the records and transactions will be maintained in blockchain immutable ledger it will be very difficult for anyone to apply for any false claims so as an example if the health records are there on blockchain the insurance companies can easily validate the health claims made by any patient through the blockchain digital records accounting it virtually maintains a record of accurate financial information all the financial transactions if maintained on an immutable ledger can easily be validated and verified and makes accounting simple now who uses blockchain there are organizations across the globe who are adopting and have started using blockchain example Walmart due to block chains decentralized system the company is able to protect its data from hacking and it alteration British Airways with blockchain flight data from various sources are merged together and help passengers receive accurate information mask with blockchain the companies able to provide an efficient transparent and secure service in global trade brilliant earth in order to track and trace the provenance of high-value gemstones they are using blockchain now let's take a look at a demo let's go over to some concepts which we have just learned now here I want to demonstrate a usage of the hashing function so as we had learned the hashing function is a 256 big hashing function as such a 256 you can type in any data and it will always generate a 256 bit hash and it's going to be unique it's a one-way function so it is not possible that you will be able to derive the data from the hash value and if I type the same data it will generate the same hash value so the hash value for blank is the same and if I type anything it will always generate the same hash value for the same data set now let's see how can we use the hashing function in our block now here we have a block which has its attributes which is the block number a nonce value and like this similar hashing function we have the data set and hash value now the difficulty level the target is already set for the hashing function to have four leading zeros so whenever I will be mining the job of the miner here is to generate a hash which should have four leading zeros in the hash value and it will use it will guess the nonce value in order to generate such a hash which is having four leading zeros so suppose if I type a data set now the hash which is right now you're seeing on the screen is not mine and it does not have the leading zeros the four leading zeros so when I will click mine the nonce value will change the miner has to guess the nonce value to get the hash which is having four leading zeros here it is so the nonce which is generated now which is fifty-seven thousand four hundred and eighty it takes huge amount of time processing power so it would have gone a pretty high value but it was able to guess it at a decent amount of time now as soon as I change the value again the block has turned pink which means it is not verified the hash has to be generated now we will see the same concept we will have multiple blocks in our blockchain now here we have multiple blocks but we have a new extra attribute called previous hash so if you notice the blocks right now currently have all the previous values of the hash which are of their previous blocks block number two has the previous hash value of four zeroes 1 5 which is the hash value of its previous block and this is how a typical blockchain is constructed now there are a few things to be noted here suppose I modify the data in the last block so if you see the block hash now needs to be changed because the data has changed its hash has to be regenerated so the previous hash value is the same which was the hash value of the previous block now the new hash has been generated for this block which starts with four leading zeros another thing to be noted is suppose I go back in the sequence and modify the data of any of the previous blocks so all the blocks ahead of this block number three now have to be verified again because the signature of block number three has changed therefore the values of the previous hash have to be updated for block number four and five so when I will mine block number three it has now generated a hash value which is as per the target block number four also has to be mine and block number five also has to be mined now this way we have created our valid block chain so this demonstrates if someone in a regular block chain a minute block chain which has high number of block chains blocks so if they go and tamper any block in the past all the subsequent blocks ahead of that block have to be mined again which will take huge huge amount of time and processing power which makes it impossible now we will see the concept when we'll take this concept of distributed now here we have a distributed ledger we have three peers PR aprv PRC all have the same copy of the ledgers now suppose there is someone who has modified the data on PRA and generated a block updated the block but the hash value of block in PRA for block number 5 is different for what is of block number 5 at where p p lb which is the for x 0 fo and PA see also has the same hash signature from as p RB so easily the participants in the distributed network will able to be identify that someone has modified block number 5 at P array which is not a valid block and it can get disregarded know whatever example I have been showing this has all been random data we can take a look at the typical transaction which actually happens on a Bitcoin network now rather than sending random data we can see here the exact examples of the transactions the transfer of money which actually happens from one account to another so this is a very good way to see that these are the ways typically the transactions are aggregated and mined in a block and we can see in a typical fashion all the three peers have the same set of information on the distributed ledger now if I modify any of the transaction the block will get invalidated and it would have to be remind so what are the key takeaways today for us we have understood why we need blockchain what is Bitcoin and blockchain how does blockchain network work the features of blockchain and applications of blockchain I hope you had a great learning session and I'll meet you next time in my next session thank you hi there if you like this video subscribe to the simple learn YouTube channel and click here to watch similar videos de nerd up and get certified click here
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