The best (and worst) quotes, adoption and regulation highlights, leading coins, predictions and much more \u2014 one week on Cointelegraph in one link! Coming every Saturday, Hodlers Digest will help you track every single important news story that happened this week. The best (and worst) quotes, adoption and regulation highlights, leading coins, predictions and much more a week on Cointelegraph in one link.Top Stories This WeekBitcoin hits all-time highs as Tesla invests $1.5 billionThe past week is going to go down as one of the best in Bitcoins history. It all began when an SEC filing revealed Tesla has invested $1.5 billion in BTC and planned to start accepting crypto as a payment method.BTCs price immediately leaped to record highs on the news, surging by 20% in 24 hours. The announcement came weeks after Elon Musk added #bitcoin to his bio and revealed he supported the cryptocurrency.Teslas Bitcoin exposure represents about 7.7% of its gross cash position, and the news has sparked hopes that other major corporations will follow suit. Galaxy Digitals Michael Novogratz predicted that every company in America will emulate the electric vehicle maker by allocating part of its balance sheets to BTC.But some treasury experts have been left scratching their heads over the change in Teslas investment strategy, with critics describing the move as unusual and risky. JPMorgan also piled in and said the purchase might not trigger a ton of similar investments.\u00a0Mastercard announces support for crypto on its network in big week for adoptionTesla was just the tip of the iceberg, with a flurry of announcements proving that Bitcoin is now firmly in the mainstream.Mastercard unveiled plans to start supporting crypto this year, paving the way for almost 1 billion people to spend digital assets at more than 30 million merchants. The company said the move was about giving its customers choice.Elsewhere, PayPal revealed that its crypto service is going to be rolled out in the U.K., making it the first international market since a successful launch in the U.S. last fall.Twitter, home to crypto-friendly CEO Jack Dorsey, confirmed it is looking into how it might pay employees who wish to be compensated in Bitcoin. Chief financial officer Ned Segal added that the social network is exploring whether it needs to have BTC on its balance sheet.There was more to come. BNY Mellon, Americas oldest bank, announced that it will offer crypto custody services for institutional clients. Its chief executive, Roman Regelman, told the WSJ: Digital assets are becoming part of the mainstream. Other major banks, such as JPMorgan, now believe theyll eventually have to get involved in BTC.Speculation is now growing that Apple will be one of the next companies to embrace Bitcoin. The cherry on top of the cake came when the crypto-focused fintech platform BitPay revealed that card owners can now pay for goods and services using Apple Pay.Key Bitcoin price metric signals traders are positioned for $50,000BTC surged beyond $43,000 without breaking a sweat on Monday, besting last months all-time high of $42,000. As the week progressed, Bitcoin managed to hit $48,900.Many high-profile analysts openly predicted last year that $50,000 was a realistic price target for 2021. Just six weeks into the year, BTC has come tantalizingly close to this level.Despite Bitcoins value trebling in the space of just three months, several crypto traders believe that the scene remains exceedingly bullish and those looking for a local top might end up being disappointed.One analyst, Cheds, told Cointelegraph: In my view, bulls are still in complete control, and every day, we get more news of institutional adoption and demand and that, more than anything, will be the driving force.Another, CryptoWendyO, described $50,000 as inevitable, adding that a Bitcoin tweet from Musk could send BTC to $54,000.Ethereum hits a new all-time high as CME futures go liveETH broke $1,800 this week, setting new records several times along the way. All of this came as Ether futures made their long-awaited debut on CME.Its also been a very lucrative few days in the altcoin markets. Cardano has surged 71% over the past seven days, and Polkadot is up 49%, with Binance Coin crushing the competition after clocking gains of 103% in the space of a week. Even XRP managed to break $0.60 once again, which has the Sword of Damocles hanging over its head.BNBs gains are undoubtedly linked to the record levels of traffic coming to the Binance exchange, with the platform suffering an outage on Thursday as it went down for maintenance.The total value locked in decentralized finance also managed to crack $40 billion this week. However, much of this surge is likely down to the soaring value of Ether rather than a dramatic explosion in activity.\u00a0Founder of Dogecoin sold everything in 2015 for a used Honda CivicNot everyone is rolling around in $100 bills as a result of the crypto bull run. Dogecoin founder Billy Markus has revealed that he sold off his DOGE stash in 2015 for an amount equivalent to a used Honda Civic.All of that means that he missed out on the Dogecoin mania that has helped the joke cryptocurrency gain 900% since late January, fueled by tweets from Elon Musk.Writing on Reddit, Markus said that he cant comprehend the prospect of DOGE ever reaching $1, writing: That would make the market cap larger than actual companies that provide services to millions, such as Boeing, Starbucks, American Express, IBM.Musk recently revealed that he had bought some DOGE for his nine-month-old son so he can be a toddler hodler, but there are fears that his days of tweeting about crypto could be numbered. Legal advisors have warned the billionaire that his social media activity and public statements could come under scrutiny from the SEC.\u00a0Winners and Losers\u00a0At the end of the week, Bitcoin is at $47,592.20, Ether at $1,836.68 and XRP at $0.60. The total market cap is at $1,477,578,548,979.Among the biggest 100 cryptocurrencies, the top three altcoin gainers of the week are Avalanche, BitTorrent and The Graph. Theres just one altcoin loser in the top 100 this week: Ampleforth.For more info on crypto prices, make sure to read Cointelegraphs market analysis.\u00a0Most Memorable QuotationsCryptocurrency has become a worldwide transaction of which you cannot even identify who owns what. The technology is so strong that I dont see the kind of regulation that we can do. Bitcoin has made our currency almost useless or valueless.Sani Musa, Nigerian senator\u00a0Elon Musk has exposed Tesla to immense mark-to-market risk.Peter Garnry, Saxo Bank head of equity strategy\u00a0I see the promise of these new technologies, but I also see the reality: cryptocurrencies have been used to launder the profits of online drug traffickers; theyve been a tool to finance terrorism.Janet Yellen, U.S. Treasury Secretary\u00a0New account registrations are still open, not sure for how long. Also seeing ATH on this. Better get an account soon.Changpeng Zhao, Binance CEO\u00a0It would not be surprising given the focus on the chief executives tweets, Bitcoin pricing and recent dramatic market moves for the SEC to ask questions about the facts and circumstances here.Doug Davison, former SEC enforcement official\u00a0Digital assets are becoming a more important part of the payments world. We are here to enable customers, merchants and businesses to move digital value traditional or crypto however they want. It should be your choice, its your money.Mastercard\u00a0Bought some Dogecoin for lil X, so he can be a toddler hodler.Elon Musk, Tesla CEO\u00a0The main issue with the idea that mainstream corporate treasurers will follow the example of Tesla is the volatility of Bitcoin.JPMorgan\u00a0Weve done a lot of the upfront thinking to consider how we might pay employees should they ask to be paid in Bitcoin, how we might pay a vendor should they ask to be paid in Bitcoin, and whether we need to have Bitcoin on our balance sheet.Ned Segal, Twitter chief financial officer\u00a0Markets are going up heavily, but well be seeing some downwards momentum as well. Nothing goes up in a straight line.Michal van de Poppe, Cointelegraph Markets analyst\u00a0I wouldnt be surprised to see there being almost some sort of a race now you have Elon Musk, you have Michael Saylor, Jack Dorsey. Youre gonna see a lot of other visionary leaders in disruptive companies actually realizing that its really moved from why to why not.Michael Sonnenshein, Grayscale CEO\u00a0The target for consolidation is near $52k, where Im expecting a bit of a correction but the measured move overall should take us towards $63,000.filbfilb, Cointelegraph Markets analyst\u00a0Any wallet that wont give you your private keys should be avoided at all costs.Elon Musk, Tesla CEO\u00a0Central banks should ban the trading of it, and force anyone who holds Bitcoin and wants to use it in any transaction, to exchange it for another currency that does not have such a damaging side effect.Nick Boles, former British MP\u00a0ETH futures go live on the CME today. This is huge. This is a bridge to institutions. This is a green light from U.S. regulators. ETH is becoming globally accepted commodity money.Ryan Sean Adams, Ethereum researcher\u00a0If decides to enter into the crypto exchange business, we think the firm could immediately gain market share and disrupt the industry.Paul Steves, Royal Bank of Canada Dominion Securities\u00a0We expect to begin accepting bitcoin as a form of payment for our products in the near future.Tesla\u00a0Prediction of the WeekBitcoin price poised to hit $63,000, says trader filbfilbThe popular analyst filbfilb has declared that the game has changed for Bitcoin and has revealed what he thinks will come next for the worlds biggest cryptocurrency.The Cointelegraph Markets contributor has said that hes anticipating a bit of a correction once BTC hits $52,000 but believes the measured move overall should take us towards $63,000.And on the matter of corporate adoption, he wrote: I really dont think people understand that S&P 500 companies owning Bitcoin means that by default peoples pensions are exposed to Bitcoin. The % of people invested in Bitcoin has already reached the masses, they just dont even know it.\u00a0FUD of the WeekEthereum-based social media project shuts down as ETH fees approach new highsAn Ethereum-based project has ceased development due to rising gas prices, as the cost of transacting on the blockchain continues to push new highs.Unite, which aimed to offer social media tokens, said the original idea for the project has been rendered unfeasible by the recent spike in fees, with the average cost of using Ethereum rising by a staggering 35,600% since last January.The startup intended to allow social media users on sites such as Twitter and Discord to distribute Ethereum ERC-20 tokens to their audience and community. Developers also confirmed that they have decided against building the platform on a layer-two solution.FTX CEO claims competitor responsible for racist messages delivered to Blockfolio usersBlockfolios Signal feed was briefly compromised this week, with some users receiving racist messages within the companys app.Now, FTX CEO Sam Bankman-Fried, who acquired Blockfolio for $150 million last August, has shed light on what happened following a security review.He claimed that the offensive content was produced and published by a competitor exchange that maliciously gained access to someones account.Bankman-Fried didnt name the culprit but stressed that funds were not jeopardized at any time. He also confirmed that Blockfolio has now fixed the vulnerability that led to this situation.The executive has been praised for his handling of the situation, and he has apparently added $10 to the trading accounts of affected users, as well as donating to organizations dedicated to fighting racial and societal injustice.Indias crypto ban is coming, hodlers to be given transition period: BloombergAn unnamed senior finance ministry official has claimed that India will soon completely ban crypto assets.Its reported that the use of cryptocurrency in all forms will be prohibited under the new law meaning transacting through foreign exchanges wont be allowed either.Crypto exchanges have reacted with dismay to the news. Unocoin co-founder Sathvik Vishwanath said: If government goes ahead with banning all cryptocurrencies, except the one backed by the state, it will not make sense to continue our business in India. But well have to wait and watch.The Indian government has been determined to clamp down on crypto use after the supreme court overturned the RBIs blanket ban on local banks providing services to businesses dealing with crypto.\u00a0Best Cointelegraph FeaturesMoment of truth? Tesla purchase is the moment Bitcoin has been waiting forDespite some expected near-term volatility, Teslas exploration of the crypto realm will likely help the industry scale up to new heights.Coincidence? Company stocks rise after they buy Bitcoin as a reserveThe market caps of most companies that bought Bitcoin have increased recently, but is that solely thanks to BTC?A new trend? Non-crypto CEOs and celebrities embrace Bitcoin on TwitterAre business leaders signaling the technological future they believe is coming to pass an international and decentralized one?