https://www.facebook.com/109004041700167/

Blockchain Technology, Dhaka (2026)

22/07/2023

Today, I asked Bard AI whether ZKP can save humans from AI. Here's what I got from the bard.

Zero-knowledge proofs (ZKPs) are a cryptographic technique that allows one party to prove to another party that they know a certain piece of information, without revealing any other information about that information. This could potentially be used to save humans from AI in a number of ways.

For example, ZKPs could be used to verify that an AI is not biased or discriminatory. An AI could be asked to prove that it does not have any discriminatory biases in its decision-making, without revealing any other information about how it makes decisions. This would help to ensure that AI systems are fair and equitable.

ZKPs could also be used to verify that an AI is not malicious. An AI could be asked to prove that it does not have any malicious intent, without revealing any other information about its goals or intentions. This would help to ensure that AI systems are not used to harm humans.

However, it is important to note that ZKPs are not a silver bullet. They can only be used to verify that an AI knows a certain piece of information. They cannot be used to verify that an AI is actually good or bad, or that it will not harm humans in the future.

Overall, ZKPs could potentially be a useful tool for helping to ensure that AI systems are safe and beneficial for humans. However, they are not a perfect solution, and they should not be seen as a guarantee that AI will never harm humans.

19/07/2023

Understanding the different types of tokens is crucial when navigating the crypto space.

Whether investing, researching projects, or engaging in DeFi, grasping each token type's unique features and purposes will help you make informed decisions.

🔐 Security Tokens

• Represent ownership in a real-world asset (e.g., company shares, real estate).

• Subject to securities regulations and require compliance with applicable laws.

• Example: Blockchain-based platforms offering tokenized securities like tZero or Harbor.

💡 Utility Tokens

• Provide access to a product or service within a blockchain ecosystem.

• Used for transactions, accessing features, or obtaining discounts.

• Example: Ethereum's native token (ETH) or Binance Coin (BNB) for Binance platform services.

🖼️ NFTs (Non-Fungible Tokens)

• Unique tokens representing ownership of a specific digital asset.

• Often used for digital art, collectibles, virtual real estate, and more.

• Example: CryptoKitties, NBA Top Shot, or Beeple's artwork sold as NFTs.

🗳️ Governance Tokens

• Enable token holders to participate in decision-making and protocol governance.

• Holders can vote on proposals, upgrades, or changes to the blockchain system.

• Example: MakerDAO's MKR or Compound's COMP tokens for decentralized governance.

🔁 LP Tokens (Liquidity Provider Tokens):

• Tokens obtained by providing liquidity to decentralized exchanges (DEXs).

• Represent ownership in a liquidity pool and earn fees for providing liquidity.

• Example: Uniswap's UNI-V2 tokens or PancakeSwap's CAKE-LP tokens for liquidity provision.

Sean Delaney

08/07/2023

challenge
Case №2. Zero-knowledge proofs allow you to prove NFT/SBT ownership without revealing the account address.

Example:

1. You are a student of the course from Distributed Lab. We can issue an SBT certificate confirming your course participation (on Ethereum, for example).

2. From another side, a global educational platform allows one to leave feedback about particular courses. This platform can exist on any chain; it doesn't matter where exactly

3. If you want to leave the feedback: 1)anonymously; 2)with proof you are a real course participant - you can do it with ZKP.

So:

1) - it will allow you to leave honest feedback without any risk of disclosure who you are

2) - it will allow each new student to review all feedback and be sure this feedback are left by the real students

© Oleksandr Kurbatov

03/06/2023

The safest way to hold 💚

The safest way to store cryptocurrency is in a hardware wallet. Hardware wallets are physical devices that store your cryptocurrency offline, making them immune to hacking attempts. Some popular hardware wallets include the Ledger Nano X and the Trezor Model T.

Here are some tips for storing your cryptocurrency safely:

✅ Use a hardware wallet. As mentioned above, hardware wallets are the safest way to store cryptocurrency.

✅ Create a strong password. When setting up your hardware wallet, you will be prompted to create a strong password. This password will be used to encrypt your private keys, so it is important to choose a strong one.

✅ Keep your recovery phrase safe. Your recovery phrase is a set of 24 words that will allow you to restore your cryptocurrency if you lose your hardware wallet. Keep this phrase safe and secure, and do not share it with anyone.

✅ Update your firmware regularly. Hardware wallets are constantly being updated with security patches. It is important to update your firmware regularly to ensure that your wallet is as secure as possible.

✅ Be careful what websites you visit. When using your hardware wallet, be careful what websites you visit. Some websites may try to trick you into entering your private keys.

✅ Use a VPN. A VPN can help to protect your privacy and security when using your hardware wallet.

By following these tips, you can help to keep your cryptocurrency safe.

17/05/2023

The cryptocurrency industry is plagued by fake information. There is too much noise, too much hype, and not enough facts. This makes it difficult for people to learn about the technology and make informed investment decisions.

There are a number of things that can be done to stop the spread of fake information in crypto. First, we need to be more critical of the information that we consume. Not everything that we read on the internet is true. We should always check the source of the information and verify it with other sources before we believe it. 👌

Second, we need to be more responsible with the information that we share. If we see something that is false, we should not share it. We should also be careful about making price predictions or expressing our opinions about specific projects. This can lead to people making bad investment decisions.

Finally, we need to support the organizations that are working to combat fake information in crypto. There are a number of organizations that are working to educate people about the technology and to provide accurate information. We can support these organizations by donating our time or money. 💰

By working together, we can stop the spread of fake information in crypto and help to build a more sustainable and trustworthy industry.

👉 Here are some additional tips for stopping the spread of fake information in crypto:

✅ Be skeptical of information that comes from anonymous sources.
✅ Do your own research before investing in any cryptocurrency.
✅ Only trust information from reputable sources.
✅ Report fake information to the appropriate authorities.

By following these tips, you can help to make the cryptocurrency industry a more informed and trustworthy place.

Connect with me ( Md. Mashiur Rahman ) for more updates 😊

08/05/2023

The next Ethereum fork - Cancun - will be huge.

It is the first fork to pave the road toward sharding. There are many novelties proposed, so let's delve into the expected awesomeness.

First of all, the changes in this fork are not yet finalized and the inclusion of certain EIPs is still being discussed. Nevertheless, I can tell you what is decided for sure to build a solid ground for your further research.

- The biggest of all upgrades included is EIP-4844
EIP-4844 is a proposal that opens the gates for the future Ethereum data sharding. The proposal introduces a new type of transaction, blob transaction, that is used to anchor L2 rollups data. Blob transactions consist of 2 parts: a signed blob and a network wrapper. Signed blobs are regular transactions with an additional field, blob_versioned_hashes, that represents the hashes of KZG polynomial commitments to rollups data that are stored in blobs in a network wrapper. These hashes can be read by EVM via a new opcode DATAHASH (0x49), while the actual rollup data is inaccessible, as it is validated and stored in the consensus client alone.

In addition, the proposal presents a separate gas auction for blobs, which does not interfere with a conventional calldata gas auction. This enables much lower gas prices for rollups to be sent as blobs, not calldata, as they are sent right now.

In order to verify rollups, smart contracts will use a new cryptographic precompile (address(0x14)) that is designed to attest KZG proofs. Given points A and B, a KZG commitment, and a KZG proof, the precompile verifies that Polynomial(A) == B. This mechanism is similar to Merkle proofs, but much more powerful. It can be used to ensure that certain pieces of rollup blob data exist, without disclosing anything else. Point A will be equal to the index of the rollup data element and B to its actual bytes32 value.

- Another great upgrade is EIP-1153
The EIP introduces a new EVM data location - transient storage. Transient storage works like regular storage, however, it is erased after the transaction ex*****on. It can be accessed via 2 new opcodes TSTORE (0xb4) and TLOAD (0xb3) which both cost 100 gas. Transient storage is a long-awaited feature because it enables many amazing use cases to be implemented. For example, ultra-cheap reentrancy guards and single transaction ERC20 approvals.

- SELFDESTRUCT behavior changes in EIP-6780
SELFDESTRUCT opcode remains deprecated and its functionality gets reduced. If the contract destruction occurs separately from the transaction it is created in, SELFDESTRUCT will only send the remaining ether without actually destroying the contract (deleting bytecode, storage, and resetting nonce). Otherwise, the opcode functionality is unvaried. This change is crucial for the upcoming state Verkle trees, where the deletion of contract storage won't be possible.

© Artem Chystiakov

06/05/2023

TLDR: Why you should be watching Avalanche 👀

1/ WHAT

Avalanche is described as a “rapidly-growing blockchain network that aims to provide a high-performance, highly scalable platform for decentralized applications (dApps) and smart contracts.”

2/ HOW

The platform is “designed to be developer-friendly, focusing on making it easy for Web2 developers to transition to Web3 and build dApps that can scale to meet the demands of mass adoption.”

Avalanche's “high throughput and low latency make it an ideal platform for gaming applications that require high-speed transactions and real-time interactions.”

The platform's “interoperability with other blockchains and networks makes it possible to create cross-chain gaming experiences, allowing players to seamlessly move assets and data between different games and platforms.”

3/ WHO

Ava Labs is the company behind Avalanche - Emin Gun Sirer is the founder and CEO of Ava Labs.

Ava Labs has raised a total of about $640 million, according to Crunchbase, and is backed by firms like Andreessen Horowitz and Polychain Capital.

In terms of total value locked (TVL), Avalanche is currently the seventh-largest blockchain, with more than $1.1 billion secured across a $5.72 billion market cap, according to CoinMarketCap data.

4/ PARTNERS

To support Web2 developers looking to enter the blockchain gaming space, Ava Labs has partnered with leading gaming companies such as Animoca Brands, Atari, and Ubisoft.

5/ EXAMPLE: AWS

Ava Labs recently announced its partnership with Amazon Web Services (AWS).

As part of this partnership, Ava Labs is “working with AWS to create a blockchain-as-a-service (BaaS) platform that will make it easy for developers to deploy and manage blockchain-based applications on AWS.”

This BaaS platform aims to “help significantly lower the barriers to entry for Web2 developers looking to enter the blockchain gaming space.“

6/ CONCLUSIONS

In conclusion, Avalanche and Ava Labs are helping Web2 developers break into new areas in blockchain gaming by providing a high-performance, developer-friendly platform and partnering with leading gaming companies to create new opportunities for innovation.

Sources: TechCrunch

Get daily gaming news coverage from the Game Fund Partners LinkedIn and follow RealThirdWeb and Jonah Blake for more updates.

© Eliza Crichton-Stuart

05/05/2023

Worldwide Web3 Wonderland | Edition #28 – Thrills of Web3 🎢

The past few weeks have marked a crucial turning point for blockchain-based payments, as a growing number of trailblazers came together 🫱🏽‍🫲🏽 to forge a future of web3 applications.

The 🖐🏽 picks showcasing pioneering initiatives from the web3 realm:

1️⃣ Sardine AI and Fortress Trust Company announced a partnership to bring together the unique strengths of each company to provide safer, faster, and compliant ePayments worldwide 🌏.

2️⃣ Mastercard teamed up with Aptos Labs and other web3 partners to create a solution 💡 that could be used to securely verify transactions in payments, remittances, ticketing and NFTs, among others.

3️⃣ Blockdaemon rolled out its digital asset wallet, Blockdaemon Wallet, built for institutional treasury, trading, and custodial services to enable banks, custodians, and exchanges to securely 🔐 self-host digital assets in online wallets.

4️⃣ Pine Labs announced the acceptance of the digital Rupee 🪙 on its PoS (point-of-sale) terminals in partnership with ICICI Bank, opening up exciting opportunities.

5️⃣ Franklin Templeton expanded its Franklin OnChain U.S. Government Money Fund on the Polygon Labs blockchain 🔗 for processing transactions and recording share ownership.

© Sanjeev Kumar

04/05/2023

How to generate a new Ethereum address and private key from an existing.

To generate a new Ethereum address and private key from an existing one, you can follow these steps:

✅ Access your existing Ethereum wallet, either through a software wallet like MyEtherWallet or a hardware wallet like Ledger or Trezor.

✅ Locate the option to export your private key. This will usually involve selecting your account, choosing the option to export the private key, and then entering your password or passphrase.

✅ Once you have your private key, you can use a tool like the Ethereum Wallet or MyEtherWallet to import it and generate a new address.

✅ In the wallet interface, select the option to create a new account or address, and then choose the option to import an existing account using your private key.

✅ Enter your private key when prompted, and then follow the prompts to create a new address and associate it with your private key.

It's important to keep your private key secure, as it is essentially the key to your account and any assets associated with it. Be sure to back up your private key and store it in a safe place, and never share it with anyone else.

11/04/2023

Non-fungible tokens (NFTs) on the Ethereum blockchain use the same underlying technology as fungible tokens (such as ERC-20 tokens), but with different properties that make them unique and indivisible. However, the process of creating and transferring NFTs on the Ethereum blockchain can be more expensive than creating and transferring fungible tokens, due to the higher gas fees associated with the more complex operations involved.

Here are a few ways to potentially reduce transaction fees when dealing with NFTs on the Ethereum blockchain:

✅ Use a lower gas price: Ethereum gas prices fluctuate based on supply and demand, so one way to reduce transaction fees is to use a lower gas price when creating or transferring NFTs. This may require waiting longer for the transaction to be confirmed on the blockchain, but can result in lower fees overall.

✅ Optimize NFT smart contract code: NFT smart contracts can be optimized to reduce the amount of gas required for certain operations, such as minting or transferring tokens. This can involve using more efficient algorithms or data structures, or removing unnecessary or redundant code.

✅ Batch transactions: If you need to create or transfer multiple NFTs, you can batch these transactions together to save on gas fees. This involves combining multiple transactions into a single transaction, which can reduce the overall cost of gas fees.

✅ Use Layer 2 solutions: Layer 2 scaling solutions, such as Polygon or Optimism, can significantly reduce the gas fees associated with NFT transactions on the Ethereum blockchain. These solutions allow for faster and cheaper transactions by processing them off-chain and then settling them on the Ethereum blockchain.

✅ Wait for lower network congestion: Ethereum gas fees tend to be higher during periods of high network congestion. If you can wait for a period of lower network congestion, you may be able to create or transfer NFTs at a lower cost.

02/02/2023

বর্তমান প্রযুক্তি দ্রুত গতিতে এগিয়ে যাচ্ছে। ভবিষ্যৎ প্রযুক্তির ভিত গড়ে উঠছে ব্লকচেইনের উপর ভিত্তি করে। অথচ ব্লকচেইন, ক্রিপ্টোকারেন্সি, মেটাভার্স, এনএফটি শব্দগুলো শুনলেই খটকা লাগে আমাদের কাছে। ঠিক যেমন আমাদের পূর্ববর্তী প্রজন্মের কাছে ইন্টারনেট সম্পর্কে জানাশোনা কম থাকায় সামান্য ফেসবুক চালানো কিংবা ফেসবুকে দেয়া বিভিন্ন নিউজের ভ্যালিডিটি বিবেচনায় অজ্ঞতা থেকে যায়। আমাদের বয়সও যখন ওই পর্যায়ে যাবে, তখন কি আমরাও পরবর্তী প্রজন্মের কাছে এভাবে অজ্ঞ থেকে যাবো?

অথচ আমরা আমাদেরকে ইন্টারনেটের মাষ্টার মনে করি। তাই এ ধারনা ভবিষ্যতেও বজায় রাখতে ভবিষ্যৎ প্রযুক্তি সম্পর্কে জানতে হবে।

রকমারি লিংক - https://www.rokomari.com/book/281311/pantabhate-blockchain
বইফেরী লিংক - https://boiferry.com/book/pantavate-blockchain

এবং অমর একুশে বইমেলা ২০২৩ এ প্যাভিলিয়ন নম্বর ২৩, ইত্যাদি গ্রন্থ প্রকাশে পাওয়া যাবে ৪ ফেব্রুয়ারি হতে।

যে সকল বিষয় বইটিতে আলোচনা করা হয়েছে -
ব্লকচেইন
কেন ব্লকচেইন এত জনপ্রিয় হয়ে উঠেছে
ওয়েবের যত ভার্সন
ক্রিপ্টোকারেন্সি ইনভেস্টমেন্ট
কিছু কথা
ডাটা কি
ডাটাবেজ কি
ব্লকচেইন কি
যে দিকগুলো ব্লকচেইনের মাধ্যমে আমূল পরিবর্তন নিয়ে আসবে
ব্লকচেইন দেখতে কি রকম
ব্লকচেইনের ভিতরে থাকা ডাটা কেন অপরিবর্তনশীল
ব্লক সাইজ
ব্লকচেইন উদ্ভাবক
ব্লকচেইনে ডাটা রাখার সুবিধা সমূহ
ব্লকচেইনের প্রকারভেদ
ব্লকচেইন নোড
ব্লকচেইন প্রিন্সিপাল
ব্লকচেইন কিভাবে কাজ করে
মেমপুল
ব্লকচেইন মাইনার
ব্লকচেইন মাইনাররা আসলে কি কাজ করে
মাইনিং ডিফিকাল্টি
ব্লকচেইন হ্যাশ ভ্যালু সমাচার
নন্স
হ্যাশিং হার্ডওয়্যার
ব্লকচেইন ওয়ালেট
ব্যাংকের ডিজিটাল পেমেন্ট সিস্টেম এবং ক্রিপ্টোকারেন্সির মূল পার্থক্য
Unix Timestamp
ব্লকচেইনে সিদ্ধান্ত গ্রহণের থিওরি সমূহ
Consensus protocol এ Competing Chain Problem এর সমাধান
শার্ডিং
গেম থিওরি
হ্যাশিং
মার্কেল ট্রি
ব্লকচেইন লেয়ার
51% অ্যাটাক
DeFi
বিটকয়েন চেইন
Bitcoin's Monetary Policy (একটি বিটকয়েন কিভাবে জন্ম নেয়)
যে কোন ক্রিপ্টোকারেন্সির প্রাইজ যেভাবে সেট হয়
বিটকয়েনের প্রাইজ এত উঠানামা করে কেন
বিটকয়েন এড্রেস
UTXO
Segregated Witness
বিটকয়েন লাইটিং নেটওয়ার্ক
Altcoin
ইথেরিয়াম চেইন
ইথেরিয়াম ব্লক
ইথেরিয়াম একাউন্ট
DApps
Smart contract
ইথেরিয়াম ভার্চুয়াল মেশিন
ইথেরিয়াম গ্যাস
Decentralized Autonomous Organization
হার্ড ফোর্ক
সফট ফোর্ক
IPO vs ICO
ইথেরিয়াম মাইনিং
ইথেরিয়াম 2.0
মেটাভার্স
NFT
সেন্ট্রাল ব্যাংক ডিজিটাল কারেন্সি
ব্লকচেইন ফর ডেভলপারস
ব্লকচেইন ডেভলপার রোডম্যাপ
Solidity Programming Language
Smart Contract Project
Infura
Ganache
IPFS
নেটওয়ার্ক কমিনিউকেশন প্রটোকল
Truffle

12/11/2022

ক্রিপ্টোজগত সামনের দুর্দিনের অবস্থাকে দিনকে দিন আরো বেশী শক্ত করছে 😐 একের পর এক মিলিয়ন মিলিয়ন টাকার গচ্চা 😯

Blockchain Technology