Giles  Goodwin

Giles Goodwin

1596920160

Adding Messages On The Bitcoin Blockchain - A How-To Guide

Hey!,

Today Luca asks:

Can I write on a Bitcoin Blockchain? Can I drop down a message?

Yes, Luca of course you can! You can leave a message on a Bitcoin blockchain using a particular op code, called **OP_RETURN**.

Through this operation code, your UTXO became unspendable! You can use at most 80 bytes for your message (160 hexadecimal characters)!

This operation is known as “timestamping of write information” because the message will become part of a block with a timestamp as well.

In Action

Can I write on Bitcoin Blockchain? — Italian Language 🇮🇹

First of all, I get a SegWit address from my testnet node.

$ bitcoin-cli getnewaddress "" "bech32"
tb1qrggdlvezgd4uy9mntz50mpmwd6l4vk9rm4ft3d

I need bitcoins! I need to use a faucet service such as: https://bitcoinfaucet.uo1.net/send.php

After that, I can check my mempool and find my TX ID.

$ bitcoin-cli getrawmempool | grep c5ce66d638f1b8ca702dfb8f7d1da7a6707d9c6497212dc66829c99f69b28b9a

the c5ce66d638f1b8ca702dfb8f7d1da7a6707d9c6497212dc66829c99f69b28b9a is the faucet’s transaction.

When can I use my UTXO?

I can use it after the mining process.

Please recover my UTXO with **listunspent** command.

$ bitcoin-cli listunspent 1 101 '["tb1qrggdlvezgd4uy9mntz50mpmwd6l4vk9rm4ft3d"]' | jq
[
{
"txid": "c5ce66d638f1b8ca702dfb8f7d1da7a6707d9c6497212dc66829c99f69b28b9a",
"vout": 1,
"address": "tb1qrggdlvezgd4uy9mntz50mpmwd6l4vk9rm4ft3d",
"label": "",
"scriptPubKey": "00141a10dfb322436bc2177358a8fd876e6ebf5658a3",
"amount": 0.00100000,
"confirmations": 6,
"spendable": true,
"solvable": true,
"desc": "wpkh([3a46ecca/0'/0'/4']020d12775323bbdaf0cb6e9a2b44ae7a591ef5872364e80e363a93d283c10b9e4f)#kxjva7dw",
"safe": true
}
]

Nice! I need to retrieve the private key, as we know it’s mandatory to sign my transaction.

$ bitcoin-cli dumpprivkey tb1qrggdlvezgd4uy9mntz50mpmwd6l4vk9rm4ft3d
cPHTHs7ERe6jDYiitj9eLVswsX3RpeKMB19eXYjpLb4CkEHd7drq

Now, we are able to create an amazing message, for instance: corsocompleto.bitcoininaction.com.

Yep, we need to use hexadecimal!

$ printf "corsocompleto.bitcoininaction.com" | xxd -ps
636f72736f636f6d706c65746f2e626974636f696e696e616374696f6e2e636f6d

I have the necessary to create the transaction!

Using _help_ I can retrieve a lot of information about this method. I want to use it on **createrawtransaction**.

$ bitcoin-cli help createrawtransaction

The receiver is the faucet’s address, I give back bitcoins :).

The address is:

2NGZrVvZG92qGYqzTLjCAewvPZ7JE8S8VxE

Finally, I can build my transaction, in the data field I can put my hexadecimal message. Remember that it will create an operation code OP_RETURN as we discussed above.

#bitcoin #blockchain #what-is-bitcoin #blockchain-development #blockchain-use-cases #blockchain-developer #btc #bitcoin-spotlight

What is GEEK

Buddha Community

Adding Messages On The Bitcoin Blockchain - A How-To Guide

Olivia Green

1615649923

The best choice for both beginners and people who value their time and money will be a web wallet combined with an exchange, there is more information about this here https://hackernoon.com/9-best-crypto-hardware-wallets-top-wallets-to-store-bitcoin-in-2021-21y333k . For users, this is a great way to test themselves in the cryptocurrency world, evaluate their trading abilities and gain confidence in working with a new type of financial assets.

Giles  Goodwin

Giles Goodwin

1596920160

Adding Messages On The Bitcoin Blockchain - A How-To Guide

Hey!,

Today Luca asks:

Can I write on a Bitcoin Blockchain? Can I drop down a message?

Yes, Luca of course you can! You can leave a message on a Bitcoin blockchain using a particular op code, called **OP_RETURN**.

Through this operation code, your UTXO became unspendable! You can use at most 80 bytes for your message (160 hexadecimal characters)!

This operation is known as “timestamping of write information” because the message will become part of a block with a timestamp as well.

In Action

Can I write on Bitcoin Blockchain? — Italian Language 🇮🇹

First of all, I get a SegWit address from my testnet node.

$ bitcoin-cli getnewaddress "" "bech32"
tb1qrggdlvezgd4uy9mntz50mpmwd6l4vk9rm4ft3d

I need bitcoins! I need to use a faucet service such as: https://bitcoinfaucet.uo1.net/send.php

After that, I can check my mempool and find my TX ID.

$ bitcoin-cli getrawmempool | grep c5ce66d638f1b8ca702dfb8f7d1da7a6707d9c6497212dc66829c99f69b28b9a

the c5ce66d638f1b8ca702dfb8f7d1da7a6707d9c6497212dc66829c99f69b28b9a is the faucet’s transaction.

When can I use my UTXO?

I can use it after the mining process.

Please recover my UTXO with **listunspent** command.

$ bitcoin-cli listunspent 1 101 '["tb1qrggdlvezgd4uy9mntz50mpmwd6l4vk9rm4ft3d"]' | jq
[
{
"txid": "c5ce66d638f1b8ca702dfb8f7d1da7a6707d9c6497212dc66829c99f69b28b9a",
"vout": 1,
"address": "tb1qrggdlvezgd4uy9mntz50mpmwd6l4vk9rm4ft3d",
"label": "",
"scriptPubKey": "00141a10dfb322436bc2177358a8fd876e6ebf5658a3",
"amount": 0.00100000,
"confirmations": 6,
"spendable": true,
"solvable": true,
"desc": "wpkh([3a46ecca/0'/0'/4']020d12775323bbdaf0cb6e9a2b44ae7a591ef5872364e80e363a93d283c10b9e4f)#kxjva7dw",
"safe": true
}
]

Nice! I need to retrieve the private key, as we know it’s mandatory to sign my transaction.

$ bitcoin-cli dumpprivkey tb1qrggdlvezgd4uy9mntz50mpmwd6l4vk9rm4ft3d
cPHTHs7ERe6jDYiitj9eLVswsX3RpeKMB19eXYjpLb4CkEHd7drq

Now, we are able to create an amazing message, for instance: corsocompleto.bitcoininaction.com.

Yep, we need to use hexadecimal!

$ printf "corsocompleto.bitcoininaction.com" | xxd -ps
636f72736f636f6d706c65746f2e626974636f696e696e616374696f6e2e636f6d

I have the necessary to create the transaction!

Using _help_ I can retrieve a lot of information about this method. I want to use it on **createrawtransaction**.

$ bitcoin-cli help createrawtransaction

The receiver is the faucet’s address, I give back bitcoins :).

The address is:

2NGZrVvZG92qGYqzTLjCAewvPZ7JE8S8VxE

Finally, I can build my transaction, in the data field I can put my hexadecimal message. Remember that it will create an operation code OP_RETURN as we discussed above.

#bitcoin #blockchain #what-is-bitcoin #blockchain-development #blockchain-use-cases #blockchain-developer #btc #bitcoin-spotlight

Abigail betty

Abigail betty

1624226400

What is Bitcoin Cash? - A Beginner’s Guide

Bitcoin Cash was created as a result of a hard fork in the Bitcoin network. The Bitcoin Cash network supports a larger block size than Bitcoin (currently 32mb as opposed to Bitcoin’s 1mb).

Later on, Bitcoin Cash forked into Bitcoin SV due to differences in how to carry on its developments.

That’s Bitcoin Cash in a nutshell. If you want a more detailed review watch the complete video. Here’s what I’ll cover:

0:50 - Bitcoin forks
2:06 - Bitcoin’s block size debate
3:35 - Big blocks camp
4:26 - Small blocks camp
5:16 - Small blocks vs. big blocks arguments
7:05 - How decisions are made in the Bitcoin network
10:14 - Block size debate resolution
11:06 - Bitcoin cash intro
11:28 - BTC vs. BCH
12:13 - Bitcoin Cash (ABC) vs. Bitcoin SV
13:09 - Conclusion
📺 The video in this post was made by 99Bitcoins
The origin of the article: https://www.youtube.com/watch?v=ONhbb4YVRLM
🔺 DISCLAIMER: The article is for information sharing. The content of this video is solely the opinions of the speaker who is not a licensed financial advisor or registered investment advisor. Not investment advice or legal advice.
Cryptocurrency trading is VERY risky. Make sure you understand these risks and that you are responsible for what you do with your money
🔥 If you’re a beginner. I believe the article below will be useful to you ☞ What You Should Know Before Investing in Cryptocurrency - For Beginner
⭐ ⭐ ⭐The project is of interest to the community. Join to Get free ‘GEEK coin’ (GEEKCASH coin)!
☞ **-----CLICK HERE-----**⭐ ⭐ ⭐
Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

#bitcoin #blockchain #bitcoin cash #what is bitcoin cash? - a beginner’s guide #what is bitcoin cash #a beginner’s guide

Abigail betty

Abigail betty

1624215600

How To Buy Bitcoin SAFELY | Step By Step Guide

My guide on how to safely invest in Bitcoin step by step.
Many people want to invest and buy Bitcoin, and now is as good a time as ever before in the year 2021. First, as an investor in cryptocurrency, I want you to know that I am biased. I invested in Bitcoin and Ethereum as early as 2014, recently I made a video of me buying another $100,000’s worth, and since then, the balance has grown to over $300,000 at the time of making this video and I think there’s a lot more room for growth.

Step 1. The best place to buy Bitcoin. I’ll start it off with my two favorite brokerages that I invest with, which is Gemini and Coinbase - I have accounts with both - you really can’t go wrong with either one but the signup process is almost identical with each. Safety, simplicity, and value are my priorities. I want my coins to be safe and I want to invest in a trust worthy source, and I want an interface that looks simple.

All brokerages require KYC (Know Your Customer) and AML (Anti Money Laundering) laws to be followed. This means no matter where you invest your money, companies will ask you for your personal credentials like your social security, your phone number, your address, just like any other legitimate brokerage you would use - that is standard.

Step 2. Make your accounts secure by downloading an app called Authy from the app store. This will help with 2 factor authentication in making sure your bitcoins are safe and secure. You can also add a secondary layer of security by adding a biometric key if you have a laptop that allows for it.

Step 3. Once you’ve secured your account, you have to fund it. Avoid funding or buying Bitcoin with debit and credit cards. They charge a 3.49% interest which is half of what the stock market returns in a year - don’t do it. Instead, connect your bank accounts and use either ACH Transfers or Wires. ACH transfers have smaller limits ($15,000 daily).

Step 4. Buying bitcoin. Once you fund your account, you can invest either once, daily, weekly, etc, if you want to average into it over time. Personally, I buy it all at once but averaging in can be a great idea. Once you bought some and you’ve invested your money, HODL for dear life!

Step 5. Once the Bitcoin settles into your account, which can take some time depending on how you funded your account, you have two main options. A cold wallet, or a hot wallet. The hot wallet is keeping your Bitcoin online, the benefit is that you have nearly instant liquidity, meaning instant access to either buy more, trade more, sell it, or put your money to work and make interest off of it. The downside is you’re taking on a risk and trusting that the exchange or the website you keep your coins on is secure enough to not lose your money.

I use Blockf for earning interest (blockfi.com/andrei) but there’s also other companies like celcius.network and nexo.io - all great choices. I like Blockfi because they have a lot of respected venture capital money and they partner with Gemini (which is the brokerage I use primarily).

Step 6. The cold wallet method is storing your coins offline. The benefit? Security. The downside? You’re potentially losing money to inflation because your money is just sitting there (luckily it still appreciates but why not earn some passive income on the side?) The Nano ledger is $59 and I would recommend storing your money here once you reach at least $1,000 of a balance. Just remember, only you can set it up, no one else must ever see your secret key phrases.

Step 7. If you traded currencies or sold for a profit/loss - you need to report it. I use app.taxbit.com and they integrate your accounts with cryptocurrency in a way that doesn’t give them full access, it gives them view access and it calculates everything automatically where you can then just print it out and give it to your tax person.

*None of this is meant to be construed as investment advice, it’s for entertainment purposes only. Links above include affiliate commission or referrals. I’m part of an affiliate network and I receive compensation from partnering websites. The video is accurate as of the posting date but may not be accurate in the future.
📺 The video in this post was made by Andrei Jikh
The origin of the article: https://www.youtube.com/watch?v=fAmdC64KKdM
🔺 DISCLAIMER: The article is for information sharing. The content of this video is solely the opinions of the speaker who is not a licensed financial advisor or registered investment advisor. Not investment advice or legal advice.
Cryptocurrency trading is VERY risky. Make sure you understand these risks and that you are responsible for what you do with your money
🔥 If you’re a beginner. I believe the article below will be useful to you ☞ What You Should Know Before Investing in Cryptocurrency - For Beginner
⭐ ⭐ ⭐The project is of interest to the community. Join to Get free ‘GEEK coin’ (GEEKCASH coin)!
☞ **-----CLICK HERE-----**⭐ ⭐ ⭐
Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

#bitcoin #blockchain #buy bitcoin #buy bitcoin safely #how to buy bitcoin safely #step by step guide

Devin Pinto

1606217442

Blockchain Certification | Blockchain Training Course | Blockchain Council

In all the market sectors, Blockchain technology has contributed to the redesign. The improvements that were once impossible have been pushed forward. Blockchain is one of the leading innovations with the ability to influence the various sectors of the industry. It also has the ability to be one of the career-influencing innovations at the same time. We have seen an increasing inclination towards the certification of the Blockchain in recent years, and there are obvious reasons behind it. Blockchain has everything to offer, from good packages to its universal application and futuristic development. Let’s address the reasons why one should go for Blockchain certification.

5 advantages of certification by Blockchain:

1. Lucrative packages- Everyone who completes their education or upskills themselves wants to end up with a good bundle, not only is one assured of a good learning experience with Blockchain, but the packages are drool-worthy at the same time. A Blockchain developer’s average salary varies between $150,000 and $175,000 per annum. Comparatively, a software developer gets a $137,000 per year salary. For a Blockchain developer, the San Francisco Bay area provides the highest bundle, amounting to $162,288 per annum. There’s no point arguing that learning about Blockchain is a smart decision with such lucrative packages.

2. Growing industry- When you select any qualification course, it becomes important that you choose a growing segment or industry that promises potential in the future. You should anticipate all of these with Blockchain. The size of the blockchain market is expected to rise from USD 3.0 billion in 2020 to USD 39.7 billion by 2025. This will see an incredible 67.3 percent CAGR between 2020-2025. To help business processes, several businesses are outsourcing Blockchain technologies. This clearly demonstrates that there will be higher demand in the future for Blockchain developers and certified Blockchain professionals.

3. Universal application- One of the major reasons for the success of Blockchain is that it has a global application. It is not sector-specific. Blockchain usage cases are discovered by almost all market segments. In addition, other innovations such as AI, big data, data science and much more are also supported by Blockchain. It becomes easier to get into a suitable industry once you know about Blockchain.

**4. Work protection-**Surely you would like to invest in an ability that ensures job security. You had the same chance for Blockchain. Since this is the technology of the future, understanding that Blockchain can keep up with futuristic developments will help in a successful and safe job.

**5.**After a certain point of your professional life, you are expected to learn about new abilities that can help enhance your skills. Upskilling is paramount. Upskilling oneself has become the need for the hour, and choosing a path that holds a lot of potential for the future is the best way to do this. For all computer geeks and others who want to gain awareness of emerging technology, Blockchain is a good option.

Concluding thoughts- opting for Blockchain certification is a successful career move with all these advantages. You will be able to find yourself in a safe and secured work profile once you have all the knowledge and information. Link for Blockchain certification programme with the Blockchain Council.

#blockchain certificate #blockchain training #blockchain certification #blockchain developers #blockchain #blockchain council

Abigail betty

Abigail betty

1624384800

What is Blockchain? Blockchain Technology Explained Simply

Blockchain technology is a way of managing a ledger of records in a decentralized manner. It means that everyone participates in maintaining and updating the ledger, which makes it practically impossible to falsify.

While Blockchain technology is a good solution to the issue of centralization, it’s also very inefficient and slow, therefore it should only be used if the problem at hand is indeed centralization.

That’s Blockchain technology in a nutshell. If you want a more detailed explanation about the Blockchain and how Blockchain technology watch the complete video , here’s what I’ll cover:

0:54 - What blockchain aims to solve
2:48 - Bitcoin: the decentralization of money
3:10 - Decentralization opportunities
4:04 - Blockchain explained in a nutshell
5:16 - How does blockchain technology work
10:05 - Ethereum in a nutshell
10:26 - Private blockchains
11:40 - Public blockchains
11:58 - Is blockchain the next big thing?
13:12 - Conclusion

📺 The video in this post was made by 99Bitcoins
The origin of the article: https://www.youtube.com/watch?v=2yJqjTiwpxM
🔺 DISCLAIMER: The article is for information sharing. The content of this video is solely the opinions of the speaker who is not a licensed financial advisor or registered investment advisor. Not investment advice or legal advice.
Cryptocurrency trading is VERY risky. Make sure you understand these risks and that you are responsible for what you do with your money
🔥 If you’re a beginner. I believe the article below will be useful to you ☞ What You Should Know Before Investing in Cryptocurrency - For Beginner
⭐ ⭐ ⭐The project is of interest to the community. Join to Get free ‘GEEK coin’ (GEEKCASH coin)!
☞ **-----CLICK HERE-----**⭐ ⭐ ⭐
Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

#bitcoin #blockchain #what is blockchain #blockchain technology #what is blockchain? blockchain technology explained simply