Metamask wallet has implemented the easiest way to speed up a transaction, you need to press 2 buttons. First "speed up" and then "confirm"
And the process of canceling the transaction also goes through with the encouragement of pressing 2 buttons.
But this has one drawback, users will not know how the principle of canceling or accelerating a transaction works.
If a user experiences a software failure, then he will not be able to speed up or cancel the transaction through the interface of another wallet and may lose his money.

I am constantly monitoring updates.
There is a very good report on hacker attacks for 2020

https://decrypt.co/54128/hackers-stole-3-8-billion-in-cryptocurrency-hacks-in-2020
Hackers Stole $3.8 Billion in Cryptocurrency Hacks in 2020
"Cybercriminals stole nearly $3.8 billion worth of different cryptocurrencies in 122 attacks in 2020, but the overall number of attacks is on decline

Dapps, or decentralized apps, running on Ethereum had 47 attacks with a current value of $436.36 million, followed by cryptocurrency exchanges that had 28 attacks ($300.15 million in losses).

Crypto wallets had 27 attacks and were the most lucrative target for the hackers, with $3.03 billion in losses. They also had the biggest average value of stolen assets - 112 million per attack compared to approximately $10 million per attack on dapps or exchanges ($9.28 million and $10.72 million respectively).

There were 12 successful attacks on blockchains themselves last year, bringing the hackers $5.91 million or $492,517 per breach. The most well-known example is probably the series of 51% attacks on the Ethereum Classic network.

There were only a few attacks on dapps based on the Tron and EOS blockchains; each saw just three dapps getting breached. Still, those attacks amounted to $10 million, or around $3.33 million per hack, in case of Tron, and $2.85 million, or $949,416 on average, for an EOS-linked breach.

The values in the study are overinflated though, since monetary losses were calculated based on the January 12, 2021 conversation rates, with Bitcoin changing hands around $34,000 that day. This is compared to how much the cryptocurrencies were worth when they were stolen."

Statistics show that defi projects are not much inferior in security to centralized exchanges. But keep in mind that in 2020, many defi projects have just gained popularity, and centralized exchanges have been operating for many years.

The hardest exploit
https://etherscan.io/tx/0xb094d168dd90fcd0946016b19494a966d3d2c348f57b890410c51425d89166e8
Transaction Fee:3.37117716 Ether and 1M profit (8 out of 9 million were lost in a transaction)

https://cointelegraph.com/news/after-yearn-exploit-attacker-funds-frozen-and-reimbursement-plans-developing
After Yearn exploit, attacker funds frozen and reimbursement plans developing
Seized funds bring the damage down to $9 million as multiple communities ponder the next step in reimbursing user funds

$ 42 is a very small price to pay for a good experience. When the gas price is above 200 gwei, then all purchases of tokens on the uniswap are not profitable for $ 200-300, if you do not wait for x3 and higher.
The amount of the commission can be changed, here I wrote a universal method for canceling or increasing the commission for transactions on the Ethereum network
https://bitcointalk.org/index.php?topic=5315007

Let's start with theory, as a rule, most users are not interested in it.
Select any transaction from the blockchain
https://etherscan.io/tx/0xf24c027cd1d90b92164fdb9d752b5bc0a4b567a2186feb3dd8fe9dca73d8f13f



Let's pay attention to the Nonce parameter. This is a counter for outgoing transactions. The account starts at zero.
The counter is incremented with each new transaction.
You cannot send multiple transactions at the same time, these operations will be executed sequentially. (Do not confuse with bulk sending via smart contract - this is one operation)
First, an operation with Nonce 0, then 1, then 2, and so on.
If the transaction with Nonce 0 has a low commission, and with Nonce 1 and 2, it is high, then 1 and 2 will not be processed until Nonce 0 is processed or canceled.

It also protects against double spending because the transactions are performed sequentially.
More details:
https://kb.myetherwallet.com/ru/transactions/what-is-nonce/

MyCrypto.com

In early 2018, one of the developers of the popular MyEtherWallet (MEW) wallet announced the release of an alternative product, MyCrypto.com, with an identical interface and functionality.
I did not delve into the reasons that it was - a marketing move or a misunderstanding to the team. Write if you know.

More details:
https://bitstat.top/blog.php?id_n=2486


Commission increase:

Metamask has a button to increase the commission, but MyCrypto does not.

It is better to use gastracker for a start
https://etherscan.io/gastracker

But the gas price can grow by 50-100 points in 5 minutes and your transaction will wait for confirmation for 1 hour or more, and the next transactions will not work.

What do we have to do?
1. Log in to MyCrypto using a hardware wallet, seed phrase, private key or JSON file.
2. Find the Nonce value of a transaction with a low commission (for example, Nonce = 6)
3. Create the same transaction with the same amount and the same recipient, but change 2 parameters:
optimal gas price (more than in a stuck transaction)
In Nonce, set the value of the transaction with a low commission (in this example, Nonce will be equal to 6).



4. Your transaction will be confirmed and the old one will be canceled (no commission loss). There cannot be 2 transactions with the same Nonce.

Canceling a transaction:
1. Log in to MyCrypto using a hardware wallet, seed phrase, private key or JSON file.
2. Find the Nonce value of a transaction with a low commission (for example, Nonce = 6)
3. Create the same transaction with the same recipient, but change 3 parameters:
Amount of payment =0
optimal gas price (more than in a stuck transaction)
In Nonce, set the value of the transaction with a low commission (in this example, Nonce will be equal to 6).
4. A zero transaction will be confirmed by canceling the old one (no commission loss).
Zero transactions can be sent on the Ethereum network. This is not possible on the bitcoin network, here the minimum amount to send is 0.0000546 BTC

This explains why there is a fee for canceling a transaction.

Download the MyCrypto wallet only from the official website
https://mycrypto.com
__
my article is in Russian
https://bitcointalk.org/index.php?topic=5308547

In 2017, I didn't have a good experience in trading and investing in cryptocurrencies. I bought the right coins, but I didn’t sell them on time and expected the prices to rise.
banano project looks very bad against the background of all the hype
https://www.coingecko.com/en/coins/banano
The coin is traded on unpopular exchanges and has a small Trading Volume.
But this is not the most interesting thing. After such a hype, dumps always follow. The dump will be fast and we can drop sharply by 10-20%

Проверил как работает криптообмен на ЮMoney.
Партнеры уточнили верифицирован ли у меня кошелек и через курьера закинули деньги на счет через банкомат Сбербанка Подождал 1 час - это все минусы.
Если раньше перевод был помечен тегом " обменная операция №ххххх",  теперь это пополнение от Сбербанка.
Менялы боятся платить переводом из за риска блокировок.

In 2017, I was also thinking like an author and wanted to get rich very quickly. I bought various shitcoins and tokens for $ 15,000-20,000. Many of them grew 2-10 times, while the price of some fell. In 2018, I could take profit and sell everything several times more expensive, but I wanted a lot of X's. In 2019, many projects were closed, others fell in value and I lost 95% of my deposit. Since then, I have not invested in shitcoins for a long term
I understand that I was a bad investor and I was not lucky, but this is not only my story. My colleagues have lost a lot more when investing in shitcoins.
I am engaged in short-term speculation with Defi project tokens, but I will definitely not buy BANANO.

https://twitter.com/cz_binance/status/1357259732000538628
"Top 20 addresses holds more than 50%+ of all #DOGE"
Excellent centralization of the coin. In such a situation, the coin can be pumped and dumped using Twitter and other social networks.
Elon Musk wrote about Dogecoin several times before this post. This can be taken as a joke, "but when the joke is repeated 3 times already,then this is not a joke, but a call to action."

https://www.coingecko.com/en/coins/dogecoin
Circulating Supply 128,233,897,815

https://dogechain.info/address/DH5yaieqoZN36fDVciNyRueRGvGLR3mr7L
Balance   34,812,351,396.59407080 DOGE
Whose wallet is this? it is constantly receiving transactions.
That's roughly $ 1.2 billion, or 27% of the total Circulating Supply

https://decrypt.co/56599/ahead-of-mayweather-fight-logan-paul-creates-ethereum-nfts

Ahead of Mayweather Fight, Logan Paul Creates Ethereum NFTs
"YouTuber Logan Paul will sell his own NFT-based artworks in addition to a vintage 1999 Pokémon card booster collection.

In brief
YouTuber Logan Paul will sell a series of NFT-based artworks as part of his Pokémon card booster auction.
A total of 36 booster packs and 44 NFTs will be sold, with a minimum bet of $10,000.
Paul will personally open each pack before sending them to winning bidders."

Already popular bloggers are starting to master NTF technology

Each project uses its own formulas for calculation. You may even notice that the price of Ethereum also differs because each cryptocurrency explorer has different algorithms.
I am using these gastrackers:
https://ethgasstation.info/index.php
https://etherscan.io/gastracker
Use a value slightly above average

For initial investors, the token price was $ 0.18.
How to get rich, short instructions:
We create a project, sell tokens for 18-25 cents
Adding a project to Binance Launchpool
We take profit x10-x100 (depends on luck)
https://www.binance.com/en/support/announcement/2f63e7cee26b4560968c7eddf6297edb

Polkadot is not going to compete with Ethereum. Polkadot is a low-fee cross-chain platform that will be compatible with many blockchains.
Read this news.
https://cryptobriefing.com/cross-chain-indexes-coming-polkadot-with-launch-stp-2-0/
Cross-Chain Indexes Coming to Polkadot With Launch of STP 2.0
I think next year it will be a new hype in cryptocurrency.

https://cryptobriefing.com/cross-chain-indexes-coming-polkadot-with-launch-stp-2-0/
Cross-Chain Indexes Coming to Polkadot With Launch of STP 2.0
Chris Williams(С)
28 января 2021г
Перевод

Кроссчейн-индексы появятся в Polkadot с запуском STP 2.0

Standard Tokenization Protocol запускает новую версию своего основного приложения на Polkadot. STP 2.0 будет поддерживать кросс-чейн синтетические активы и мульти-чейн индексы.

Ключевые выводы
STP обновляет свой протокол на Polkadot, делая упор на синтетические активы.
Протокол упростит кросс-чейн токенизацию и многоцепочечные индексы.
STP 2.0 запускается на парачейне Moonbeam от Polkadot, что намекает на будущее DeFi за пределами Ethereum.

Standard Tokenization Protocol представил «STP 2.0». Пользователи протокола смогут получить доступ к кросс-чейн синтетическим активам в различных формах на Polkadot.

Standard Tokenization Protocol анонсировал обновленную версию своей децентрализованной сети.

STP 2.0 будет сосредоточен на синтетических активах, предлагая доступ к кросс-чейн-токенизированной синтетике, а также к индексам мульти-чейновых токенов - то, что сегодня в DeFi в значительной степени остается неизученным. Он будет построен на Polkadot.

Генеральный директор STP Майк Чен сказал Crypto Briefing, что обновленная сеть значительно улучшит ее текущее взаимодействие c сетью Ethereum. Он сказал:

«STP 2.0 будет построен на Polkadot, поскольку он обеспечивает возможность кросс-чейнов, а инфраструктура парачейнов должна обеспечивать более быстрые и дешевые транзакции, чем все более и более переполненная экосистема Ethereum».

Синтетические активы - это относительно новая инновация в экосистеме DeFi, но они резко выросли за короткий промежуток времени.

Они работают аналогично синтетическим активам, используемым в традиционных финансах, и в основном функционируют, отслеживая цену отдельного актива. Чен объяснил, что преимущества использования синтетических активов включают в себя возможность пользователям «свободно получать доступ к активам независимо от географических и финансовых ограничений», открывая « больше ликвидности, больше продуктов, больше стратегий и даже больше возможностей» в DeFi.

Токенизация активов была особенно популярна в протоколах DeFi, таких как Synthetix, которые предлагают пользователям доступ к токенизированным версиям биткойнов, долларов США, золота и т. д.

Хотя синтетические активы уже прижились в DeFi, немногие достигли того, что намеревается сделать команда STP.

Протокол планирует предложить кросс-чейн токенизацию, что означает, что пользователь в сети Polkadot может владеть токеном, который дает доступ к цене актива в сети Ethereum. Первоначально STP 2.0 будет токенизировать токены ERC-20 перед включением их в другие блокчейны.

Он также запустит первый мульти-чейн индекс DeFi.

Упрощая использование индексов в блокчейнах STP 2.0 позволит пользователям участвовать в различных мероприятиях DeFi с помощью индекса, который отслеживает производительность различных стандартов токенов. Чен сказал, что новые блокчейны показали новые перспективы для улучшения мульти-чейн индексов от Ethereum:

«Мульти-чейн индексы относительно новые, поскольку большинство цифровых активов размещено на Ethereum. Недавно мы стали свидетелями появления других блокчейнов, таких как Polkadot, Solana, Near, Klaytn, и многих активов, построенных на этих блокчейнах. В результате доступ к этим активам будет становиться все более и более доступным».

Индексы уже существуют в DeFi. Например, Set Protocol запустил DeFi Pulse Index, который соответствует цене "голубых фишек" DeFi , таких как Aave , Synthetix и Yearn.Finance . Но этот индекс также несколько ограничен - все эти токены в настоящее время работают на Ethereum, который на протяжении многих лет подвергался критике.

Polkadot догоняет Ethereum

STP 2.0 станет частью растущей сети Polkadot; конкурент Ethereum, ориентированный на межсетевое взаимодействие.

Первоначально Polkadot был задуман Гэвином Вудом, который также в значительной степени отвечал за разработку Ethereum и его языка программирования Solidity.

Инфраструктура Polkadot включает несколько парачейнов, призванных сделать сеть более масштабируемой за счет обработки транзакций. STP 2.0 будет использовать парачейн Moonbeam.

Moonbeam был запущен в конце прошлого года и предлагал совместимость со смарт-контрактами Ethereum. Чен объяснил, почему это будет ключевым преимуществом STP 2.0:

«Используя Moonbeam, контракты могут быть написаны на Solidity и развернуты в парачейне Moonbeam, что позволяет STP интегрироваться с экосистемой Polkadot, используя код, написанный в Solidity».

Ethereum планирует решать проблемы масштабируемости, создавая решения уровня 2, такие как optimistic roll-ups и, в конечном итоге, шарды. Оptimistic roll-ups Ethereum  запущен ранее в январе 2021, в то время как шардинг не будет реализован на старте Ethereum 2.0. Это создало множество проблем, особенно с учетом того, что сегодня DeFi в основном работает на Ethereum.
https://cryptobriefing.com/optimism-soft-launches-layer-2-solution-amid-ethereum-bull-run/

По данным Etherscan, с лета 2020 года загрузка сети не опускалась ниже 95% .

Это означает, что плата за газ стоит дорого. Даже обмен токенов на Uniswap может стоить около 10 долларов, что является огромной надбавкой к тому, в сравнении с 2019 годом. Взаимодействие с более сложными смарт-контрактами для участия в таких мероприятиях, как майнинг ликвидности, может быть еще более затратным.

В то время как Ethereum в настоящее время является домом для DeFi, шаги, подобные действиям STP, предполагают, что гонка еще далека от завершения.

Поскольку Polkadot принимает проекты, создающие инновационные предложения, которые еще не доступны в других блокчейнах, в ближайшие годы экосистема может увидеть сдвиг в сторону межсетевого взаимодействия. Благодаря межсетевой токенизации и мульти- чейн индексам STP 2.0 может извлечь выгоду из роста Polkadot.

STP 2.0 будет представлен в ближайшие месяцы. Полностью запустить на Polkadot планируется до конца года.

https://twitter.com/k06a/status/1356583893579792384?s=20
Anton Bukov | k06a.eth
@k06a(C)
"I have built chart for day-to-day gas utilization within blocks since Ethereum started.
Seems like it's right time to increase gas limit from 12.5M to 15M. Let's do this to increase transaction throughput by 20%"

Anton Bukov | k06a.eth
@k06a(С)
2 february
"I afraid EIP1559 adoption is at least 1 year away from now – it is my own optimistic estimations. While miners could increase block gas limit without any hard-fork – every miner is capable increase gas limit by ≈0.1% comparing to previous block."

Interesting thought, although the developers were planning EIP1559 this year

The main plus of decentralized finance is that we do not need intermediaries in the form of banks, lawyers, experts, analysts, insurers, who receive a part of the profit from each transaction and increase the cost of services.
The second important stage in this revolution should be the acceptance of cryptocurrencies as a means of payment. Now you can pay with cryptocurrencies for goods or services in some countries, but this works through intermediaries - financial and other organizations.
It is very important that the second stage comes as quickly as possible.

Let me tell you with an example
Let's say at the time of adding liquidity 1 Ethereum = 1600USDT

You add 2 Ethereum and 3200USDT to the pool
The pool rule is:  x * y = k (constant)
2 Ethereum * 3200 USDT = 6400
Your asset value = 2 Ethereum * 1600USDT +3200 USDT = 6400USDT

For example, if the Ethereum price is 2000 USDT
Your assets on the pool will be contained in the following proportion:
1.6 Ethereum * 4000USDT = 6400 Your asset value = 1.6 Ethereum * 2000USDT + 4000 USDT = 7200 USDT

You can leave the pool, buy 0.4 Ethereum for 800USDT and revert back to the initial ratio: 2 Ethereum to 3200USDT.
You need to understand that you need to pay for several commissions: confirmation of funds, adding liquidity, withdrawing liquidity and exchanging Ethereum for USDT. Perhaps these costs will not cover the profit from adding liquidity to the pool.

For example, if the Ethereum price is 1200 USDT
Your assets on the pool will be contained in the following proportion:
2.67 Ethereum * 2400 USDT = 6400 Your asset value = 2.67 Ethereum * 1200USDT +2400 USDT = 5600 USDT
You can leave the pool, sell 0.67 Ethereum for 800USDT and return to the initial ratio:  2 Ethereum and 3200USDT.

Risks:
You may lose funds if the smart contract is hacked.
If USDT becomes a scam, then the ratio of your funds on the pool:
for example 0.000064Ethereum * 100000000 USDT = 6400
That is, you will lose all your money.

The same will happen if there is any shitcoin in place of USDT that will quickly lose price.

The best pool:  stablecoin * stablecoin , for example USDС * DAI

Bitcoin has a production cost
The number of bitcoins is limited
Bitcoin halving occurs every 4 years
Bitcoin is recognized by major world exchanges and states of the world
The new US president plans to spend $ 1.9 trillion on economic recovery. Who will then trust the dollar as the current world currency?
I believe that a drop in the price of bitcoin is possible if a quantum supercomputer breaks the encryption algorithm and picks up the private keys to the coin wallets.

The crowd can be wrong and futures trading is very risky. Market makers can significantly lower the price of Ethereum after the start of the sale of futures.
I have sold some of the Ethereum coins and I expect prices to fall after such a rapid rise.
Before the price of Ethereum rises to $ 2,000, I expect several more price drops.
The commission for swap Ethereum on AIM is now $ 67