One of the largest sources of information about Bitcoin for non-technical newbies. Bitcoin Guides, Reviews and Courses, ie. "The Best Bitcoin and Cryptocurrency Exchange Guide", "How to Buy Bitcoin in 2024 – A Beginner’s Guide", "Bitcoin Wallet Guide, Reviews, and Comparison".

OP_CAT: The Missing Piece for BTC L2s?

OP_CAT, or "Operation Concatenate," is an opcode in Bitcoin's scripting language that allows to build new Bitcoin related solutions, like L2 networks, but it has to be reactivated in the protocol first - consensus is needed. "StarkWare has plans to leverage OP_CAT for bringing zero-knowledge (ZK) scaling to Bitcoin to enable advanced financial instruments and apps on the network. "

PayPal USD

PYUSD is aEthereum and Solana smartcontract stablecoin fully backed by US dollar deposits, US treasuries, and similar cash equivalents. You can buy and sell 1 PYUSD for 1 USD on PayPal. PayPal USD is issued by Paxos Trust Company, LLC (Paxos).

$1B lost: The 5 biggest cryptocurrency fails of 2017

Worth to remember Year 2017. Includes description of Parity Wallet Hack where 3 wallets had been drained of over 150,000 Ether.


Entry level informations about different wallet types (Starting Guide, FAQs) and some wallet solutions reviews.

Forget the Bitcoin halving: Bitcoin’s original vision has been surpassed (mid of2024)

Good description of state of crypto in mid 2024. The bitcoin ETF approval is an evolution of Satoshi’s vision of global decentralized money to global decentralized programmable assets. Etherem's L2s is only bandage.

Introducing Polygon 2.0: The Value Layer of the Internet

Introduction to Polygon 2.0 concept - Value Layer of the Internet.

POL: One token for all Polygon chains

Whitepaper describing vision of MATIC cryptocurrency successor - POL: "Realizing the vision of the Value Layer of the Internet will eventually require the Polygon network to host billions of users and millions of Web3 applications. To enable this vast level of activity, hundreds or thousands of Polygon chains will be running in parallel, secured by tens or hundreds of thousands of validators. "


The "native" zkEVM Ethereum L2 blockchain, Total value locked: 639.8M Transaction count: 51.5M, Batches settled to L1: 223,018 as for end of 2Q/2024. First block 0: Oct-10-2023 06:00

Cardano Summit 2024

2-days Global Cardano Blockchain Event Dubai, UAE,23-24 October 2024. From site: "The global Cardano Summit returns, bringing together industry leaders, businesses, Cardano ecosystem projects, and blockchain enthusiasts for networking and connecting with a new generation of innovative projects."

XRP Ledger Apex 2024

XRP Ledger Apex 2024 June 11-13, 2024 Amsterdam, Netherlands. Biggest XRP Cryptocurrency Conference with 70+ Speakers and 60+ Sessions. From site: "XRP Ledger Apex 2024, hosted by Ripple is the largest annual summit on the XRPL calendar. It unites developers, businesses, fintechs, VCs and the wider community. Be the first to hear about major updates, explore unmatched networking opportunities and engage directly with key players shaping the future of XRP Ledger ecosystem."

Turbo Token

Listed on 30+ exchanges memecoin with 2908.74% (1y) price growth in 2024. "A Meme Coin coded by Artificial Intelligence." can be read on the Website, just to explore AI trends.

Redstone L2

Redstone Mainnet is a version of optimistic rollup layer 2 (L2) protocol with plasma mode. Redstone has low tx fees amd is targeted for onchain games and online worlds. It is compatible with Ethereum clients, like Metamask. First block was started on Apr 04 2024 00:58:13 AM and every new is made every 2 sec.


Register, manage and trade .eth domains on market. Ethereum Name Service (ENS) is a decentralized domain name system built on the Ethereum blockchain.


Los-Angeles based Crypto news portal, newsletter and podcast. Categories: Business, Regulation, Bitcoin, Ethereum, DeFi, Tech, NFTs.


DEX Swaps for Solana Network and DeFi tool. "Raydium is an automated market maker (AMM) built on the Solana blockchain which leverages a central limit order book to enable lightning-fast trades, shared liquidity and new features for earning yield." Allows to provide liqudity and earn fees, stake, farm and more.


The memecoin launchpad on Solana or Blast where You can launch a coin instantly and tradeable. Also pump.fun allows users to speculate (pump) on microcap tokens without the worry of a malicious developer removing the liquidity (rug) - fair-launch with no presale and no team allocation.


Qredo is distributed multi-party computation (dMPC) protocol offering enterprise-grade cryptocurrency security and governance solutions for digital assets stored in any EVM (Ethereum) compatible blockchain. Qredo's policy engine enables the creation of signing schemes that allows multiple parties to initiate and approve blockchain transactions. In other words Qredo is a non-custodial solution which secures digital assets on-chain without the need for users to store private keys. Qredo provides its own API for custom software integration and prepared Web3 wallets integrations, like: METAMASK INSTITUTIONAL, WALLETCONNECT, SUI WALLET.


Framework, thus based on EVM, consist it's own L2 REDStone for low cost of operation. "MUD is a framework for ambitious onchain applications. It reduces the complexity of building Ethereum apps with a tightly integrated software stack. It's open source and free to use." Technologies: Node.js v18, git, Foundry, pnpm.


Amazing animated visualisation of Bitcoin mempool. Additionally, interactive graphic representation of current block with detail info about all transactions in it: inputs, outputs, fees and more. Very good educational resource for Bitcoin.

OrdinalNews.io Bitcoin Runes Tools List

List of links to Wallets, Etching/Minting Services, Marketplaces, Launchpads, DeFi, Explorers, Data&Analysis of Bitcoin's Runes extension.


New functioning zk-proof mechanism for light clients or simple payment verification (SPV) without running a full network node. Still under research and development.


"April 11th, 12th, 13th, and 14th, 2024 Network with fellow Bitcoiners in Dallas, Texas. The longest running bitcoin conference and celebrating our 7th year."

Bitcoin completes its fourth halving, block rewards now stand at 3.125 BTC

Article from historic moment on April 19th, 2024: "block rewards were slashed from 6.25 BTC to 3.125 BTC."

12 Solana presale memecoins abandoned after just a month

Article about 2024 Solana meme-coin fraud projects "The 12 now-defunct projects raised a total of $26.7 million by way of a controversial fundraising method known as a presale."

Rebuttal of GreenpeaceUSA Report on Bitcoin

This article explain why statement "Bitcoin consumes as much energy as entire countries" is a lie, and demistify other disinformation spreaded by Greenpeace in his report.

The Chainalysis 2024 Crypto Crime Report

From site: "Original research and analysis on the latest trends in cryptocurrency-based crime including the decline in crypto hacking and what it means for DeFi, the intersection of crypto scamming and human trafficking, why 2023 was the biggest ransomware year ever, and more. Download your copy today"

Chainalysis Links NYC

Crypto and Law Live Event, April 9-10, 2024, Marriott Marquis, New York City. Main theme: "The digital asset event where the public and private sectors meet". From site: "Chainalysis Links New York will take place on April 9-10, 2024 in New York City and will feature 2 full days of mainstage content and breakout sessions."

10 Hours of Bitcoin

"The fastest path to understanding Bitcoin." maybe is too much say, but there is a nice set of resources which can help to start with.

Ethereum Nodes

List of Ethereum Nodes with API enabled infrastructure - RPC endpoints for the Ethereum network. Use it to connect Your project/application with Web3 infrastructure or configure You wallet software (i.e. MetaMask)

Six Crypto Deaths That Haunt the Blockchain World

Mysterious Deaths in Crypto, story of Nikolai Mushegian, Tiantian Kullander, Vyacheslav Taran, Fernando Pérez Algaba, Javier Biosca, Gerald Cotten.

Simply Bitcoin

Homepage of Youtube Bitcoin related channel: "Simply Bitcoin". @SimplyBitcoin on Youtube has +25k subscribers and +2k of vedeo clips.


Producer of one of the most recognizable crypto hardware wallets: Nano S. Now new more advanced models are avilable. With Ledger You can't go wrong with Ledger, especially for personal needs.


Open Source, easy AF Bitcoin node for desktop computers. Set of scripts which can made a full Bitcoin Node form any Linux / Win PC. Parmanode is designed for non-technical users.


BitBox02 is a hardware wallet with Multisig support. The BitBox02 supports Bitcoin, Litecoin, Cardano, Ethereum, Chainlink, BAT and 1500+ more. Intuitive interface on PC and Mobile App. Bitcoin only edition for those who only want to hold Bitcoin. Dual security chip ATECC608B.

Rabbit Hole Stories

Podcast website with talks about Bitcoin from September 2022.

Swan Bitcoin

The Comprehensive Bitcoin Investment Platform: - Concierge OTC Service - Institutional-level Liquidity - Retirement Accounts - Recurring and Target Buys - Tax-loss Harvesting - Inheritance and Estate Planning $1 Billion+ Bitcoin purchased into cold storage: 3,000+, Swan Private clients, 120+ Countries served

Summer of Bitcoin

From site: "a global, online summer internship program focused on introducing university students to bitcoin open-source development and design" 35K+ APPLICANTS; 74 COUNTRIES; 168 STUDENT CONTRIBUTORS; 60+ MENTORS; 30+ OPEN-SOURCE ORGANIZATIONS; 50K+ LINES OF CODE

Hashrate Index

Bitcoin mining research, analysis and metrics charts. Bitcoin Hashprice Index - quantifies the expected USD and BTC rewards a Bitcoin miner can earn from a petahash or terahash of Bitcoin hashrate. Bitcoin ASIC Price Index tracks the price of Bitcoin miners in the ASIC market. Can subscribe to the Hashrate Index Newsletter.


BlockchainReporter is a global crypto media company that provides bitcoin news, altcoins news, blockchain news, NFT news and cryptocurrency adoption news. Daily price analysis of ETH, ADA, BTT, SOL, LINK and more.

Jeremy Wood: Who Is Cardano’s Mysterious Co-Founder?

Story about most mysterious figure in the Cardano (ADA) pantheon.

Bitcoin Only

Big collection of links to Bitcoin resources, updated up to Nov. 2022.

Bitcoin Ecosystem Shortcut

Shortcut to "Bitcoin Ecosystem" category. Please click the link above.

Ethereum Ecosystem Shortcut

Shortcut to "Ethereum Ecosystem" category. Please click the link above.

Tether’s bank partner Britannia sued over $1B deposit: Report

Tether is fighting for the money from his assets. Good, but this shows, that conterparty risk is high for Tether/USDT. From site: "Tether’s bank partner Britannia is reportedly facing a lawsuit over claims it failed to pay the full price of revenue-generating assets allegedly related to a deposit from Tether."

Tether freezes $225M in USDT linked to romance scammers amid DOJ investigation

This story shows that USDT (Tether) is highly centralized and subject to US courts. Stablecoins are smart contracts on Etherum and other blockchains. Technically, smart contracts can be controlled, including blocking specific accounts.

Ethereum Magicians Forum

Classic Internet discussion forum dedicated to Ethereum. From site: "Ethereum Magicians is a forum for the crypto community to have a place where anyone can join, create topic and discuss mainly about EIPs and technical difficulties of Ethereum ecosystem. Or in another words “Ethereum Magicians forum is a place on the internet where your voice will be heard and your contributions to the Ethereum will matter”. Ethereum Magicians is a group of individuals working and contributing to the Ethereum."


List of Polygon Validators & Delegators with staked value, list of validators with issues and Polygon Earnings Calculator.

Bitcoin Optech Newsletter

From site: "The Bitcoin Operations Technology Group (Optech) works to bring the best open source technologies and techniques to Bitcoin-using businesses in order to lower costs and improve customer experiences."

Living Room of Satoshi

Pay bills with the most popular cryptocurrencies on ustralia's largest crypto gateway. Workin under Australian Financial Services Licence.