Raw News Items
103 itemsApril 30, 2026
- Cointelegraph
Repeated Bitcoin profit taking near $77K suggests rally is losing steam
Short-term traders took profit each time BTC rallied above $77,000, creating overhead sell pressure that has capped BTC’s ability to reach $80,000.
- The BlockScore: 90
Crypto hacks hit record high in April as exploits kept piling up
With the end of April in sight, another exploit involving dormant Ethereum mainnet addresses appears to have occurred.
- CointelegraphScore: 85
US, UAE and China joint effort dismantles 9 crypto scam centers
In another police action, European police arrested ten people and took down three scam centers, estimated to have stolen over $58 million from victims around the world.
- CointelegraphScore: 85
US Senator Tillis to push Senate Banking vote on stalled crypto bill
Republican Senator Thom Tillis says the Senate’s version of the CLARITY Act has “made a lot of progress,” and it was time for lawmakers to vote on advancing the bill.
- CoinDeskScore: 85
Wasabi Protocol drained for $4.5 million in apparent admin key compromise
The exploit used a similar playbook as Drift's $285 million breach earlier this month — a compromised deployer key with no timelock or multisig that resulted in a drain of funds.
- The BlockScore: 85
Wasabi Protocol hit by more than $5 million exploit across multiple chains, security firms say
Blockaid and CertiK said a compromised admin key was used to upgrade Wasabi Protocol contracts and drain funds.
- CointelegraphScore: 85
US seized $500M in Iranian crypto assets, Treasury secretary says
Treasury Secretary Scott Bessent said the US has seized nearly $500 million in Iranian crypto assets, surpassing the previously reported $344 million freeze.
- CointelegraphScore: 85
Crypto hack losses top $630M in April, highest since February 2025
Losses from crypto hacks have topped $630 million in April across more than 25 hacks, with DeFi dominating major incidents and exploits accelerating despite security updates.
- CoinDeskScore: 85
The long con: How North Korean spies spent months in-person to drain $285 million from Drift
The security intelligence research firm said North Korean-state-backed hackers account for 76% of all crypto scam and hack losses in 2026 and have stolen $6 billion since 2017.
- The BlockScore: 85
Bitcoin miner MARA to acquire Long Ridge in $1.5 billion Ohio gas plant deal
MARA will acquire an Ohio natural gas plant operator for $1.5 billion, shifting from bitcoin mining to digital infrastructure.
- DecryptScore: 85
North Korean Hackers Have Stolen $6 Billion in Crypto—Including 76% of 2026's Spoils: TRM
Pyongyang-linked hackers drained $577 million from two DeFi platforms in April, underscoring an escalating threat to crypto markets.
- CryptoSlateScore: 85
Visa is quietly building stablecoins into mainstream payment plumbing without you knowing
Visa said its settlement pilot for stablecoins now supports nine blockchains and has reached a run rate of $7 billion a year. The company announced on April 29 that it added Arc, Base, Canton, Polygon and Tempo to a pilot that already used Avalanche, Ethereum, Solana and Stellar. Visa said the annua...
- DecryptScore: 80
Gemini Gains Key CFTC Approval to Expand Prediction Market, Perps Offerings
A DCO license will now allow crypto exchange Gemini to act as a clearinghouse for its derivatives-related businesses.
- The BlockScore: 80
FBI leads arrests of 276 in global crypto ‘pig butchering’ scams
Dubai police arrested 275 individuals, while Thai authorities arrested one suspect allegedly involved in crypto scams.
- CoinDeskScore: 80
Bitcoin slides toward $75,000, ETH, SOL, XRP drop as oil hits four-year high
Crypto sold off across the board with bitcoin down 2.1% and ether off 3.4% as Brent crude surged 7.1% to $126 a barrel on reports President Trump is being briefed on military options for Iran.
- The BlockScore: 80
South Korea seeks 20-year term for Delio CEO in $169 million crypto case: report
South Korean prosecutors seek 20 years for Delio CEO over $168.8 million embezzlement from 2,800 crypto deposit users.
- The BlockScore: 80
North Korea accounts for 76% of 2026 crypto hack losses, with theft since 2017 topping $6 billion: TRM Labs
North Korea-linked hackers stole $577 million in two April exploits, accounting for 76% of crypto losses in 2026, according to TRM Labs.
- The BlockScore: 80
Gemini secures Derivatives Clearing Organization license as it works toward full CFTC stack
Gemini's Olympus unit received a key DCO license from the CFTC, enabling it to act as an in-house derivatives clearinghouse.
- CoinDeskScore: 80
Senator Warren questions Commerce Secretary Lutnick on Tether loan to family
Senators Elizabeth Warren and Ron Wyden sent letters to Howard Lutnick and Tether CEO Paulo Ardoino asking about a loan Tether reportedly made to Lutnick's family.
- The BlockScore: 80
Crypto market structure bill nears May push as ethics disputes and Trump ties cloud path forward
Crypto legislation is gaining momentum, with lawmakers eyeing a potential mid-May markup—even as key disputes remain unresolved.
- CoinDeskScore: 75
Ouch. The U.S. 30-year Treasury yield just hit 5% and bitcoin may pay the price
Hawkish dissent within the Federal Reserve, elevated oil prices and rising long-term inflation expectations are pushing bond yields higher.
- CoinDeskScore: 75
Bitcoin faces $80,000 resistance as derivatives shows signs of risk aversion
Bitcoin faces profit-taking pressure near $80,000, backed up by a U.S. inflation report that comes as high oil prices and rising bond yields weigh on risk assets.
- CointelegraphScore: 75
South Korea seeks 20-year sentence for Delio CEO over $169M crypto fraud
Prosecutors say Jeong Sang-ho’s “active deceptive acts” left nearly 2,800 investors frozen out of their funds, as South Korea's crackdown on the crypto industry widens.
- CryptoSlateScore: 75
US Treasury yields spike to highest levels in a year adding new problem for Bitcoin liquidity
Bitcoin's April rebound is now facing a two-front macro test. The official Treasury curve for Apr. 29 placed the 10-year yield at 4.42%, the 30-year at 4.98%, and the 5-year at 4.05%. Today, market charts show the same pressure zone, with the 10-year near 4.40%, the 30-year near 5%, the 5-year near ...
- CoinDeskScore: 75
Gemini eyes prediction market challenge to Kalshi, Polymarket, secures derivatives license; shares surge
Tyler and Cameron Winklevoss' crypto exchange now holds licenses allowing it to expand into regulated derivatives and prediction markets, the fastest-growing sectors in crypto.
- CointelegraphScore: 75
MARA accelerates mining-to-AI pivot with $1.5B Ohio power plant deal
MARA's shares jumped as it added a 505-MW power plant and data center site to expand into AI infrastructure.
- The BlockScore: 75
Arbitrum DAO starts vote to release 30,766 frozen ETH to DeFi United, following Kelp DAO attack
The Arbitrum Security Council froze 30,766 ETH that the Kelp DAO attacker had moved to an Arbitrum One address.
- The BlockScore: 70
South Korea’s Shinhan Card to test real-world stablecoin payments on Solana
Shinhan Card has partnered with the Solana Foundation for a proof-of-concept project testing a real-world payment system using stablecoins.
- CointelegraphScore: 70
Meta rolls out stablecoin payouts for creators in Philippines, Colombia
The latest stablecoin move comes years after Meta first dipped its toes into stablecoins through Libra in 2019, before scrapping the plans in 2022 due to regulatory pushback.
- CointelegraphScore: 70
Bitcoin eyes $75K after 'most hawkish' FOMC as oil hits highest since 2022
Bitcoin price action remained weak as the US-Iran war delivered a Fed meeting that was the "most hawkish in years" and oil neared four-year highs.
- CointelegraphScore: 70
South Korea’s Shinhan Card taps Solana to test real-world stablecoin payments
Shinhan Card signed a deal with Solana Foundation to expand stablecoin payment tests and explore non-custodial wallets and DeFi-based services.
- CoinDeskScore: 70
MARA Holdings to buy Long Ridge Energy in $1.5 billion AI data center push
The deal includes a 505 MW gas plant and 1,600 acres in Ohio, offering over 1 GW power capacity for future AI and IT buildout.
- CointelegraphScore: 70
UK regulator clears path for tokenized funds within existing rules
The FCA signs off rules to let UK funds keep registers onchain and add a new Direct‑to‑Fund dealing model, aiming to simplify tokenized funds inside the existing regime.
- The BlockScore: 70
Polymarket taps Chainalysis to police insider trading as it seeks $15 billion valuation, CFTC signoff
Both Polymarket and rival Kalshi have attempted to address concerns about insider trading on the platforms.
- DecryptScore: 70
Twenty-One Weighs Mergers With Strike, Elektron to Create Publicly Traded Bitcoin Giant
Tether Investments proposed a three-way merger to create a Bitcoin platform combining mining, treasury management, and financial services
- DecryptScore: 70
Polymarket Launches Market Integrity Tools Following Soldier’s Insider Trading Arrest
The team-up between Polymarket and Chainalysis aims to bring institutional-grade compliance monitoring to crypto prediction markets.
- CointelegraphScore: 70
Insider trading backlash forces Polymarket to step up surveillance
Polymarket has selected Chainalysis to flag suspicious trades as insider betting concerns mount and regulators tighten scrutiny on prediction markets.
- The BlockScore: 70
Senators Warren, Wyden press Tether and Commerce Secretary Lutnick over loan to family trust
Sens. Warren and Wyden are pressing Tether and Commerce Secretary Lutnick over a reported loan made to a trust tied to Lutnick’s children.
- CointelegraphScore: 70
Bitcoin’s $75K cost basis emerges as key support zone for current bull trend
Bitcoin found support above a key investor cost-basis level as spot BTC ETF flows and spot positioning compressed BTC’s price range in preparation for the next trending move.
- DecryptScore: 70
Bitcoin Crash Incoming? April Surge Was Built on Shaky Ground, Analysts Warn
Analysts warn that the Bitcoin rally was fueled by speculative futures trading, mirroring conditions that preceded the 2022 crypto crash.
- CryptoSlateScore: 65
Here’s why Bitcoin is stuck below $80,000 and what Powell’s FOMC meeting did for BTC price
Bitcoin entered yesterday's Fed decision already capped below a dense on-chain supply zone, and Fed Chair Jerome Powell's press conference gave buyers little reason to push through it. The Federal Reserve kept the target range at 3.5%-3.75% and explicitly linked elevated inflation to higher global e...
- CointelegraphScore: 65
Bitcoin futures signal caution as long-to-short ratio signals positioning shift
Bitcoin derivatives highlight traders’ nervous view as the Federal Reserve holds interest rates and BTC struggles to trade above its range highs. Are the bears back?
- CointelegraphScore: 65
Twenty One Capital rises on proposed merger with Strike and Elektron
Tether proposed that Elektron founder and CEO Raphael Zagury serve as president of the proposed merged company, while Strike's Jack Mallers would also serve in an executive role.
- CoinDeskScore: 65
XO Market bets on user-generated prediction markets to rival Polymarket and Kalshi
Backed by 20VC, Picus Capital and Coinbase Ventures; XO lets users create and profit from their own prediction markets, and plans to rollout a new vault product to democratize market making.
- CointelegraphScore: 65
Australia draft payments vision eyes stablecoin interoperability
A draft vision for Australia’s domestic payments system says stablecoins and tokenized fiat currency could reshape how money moves across future rails.
- CointelegraphScore: 65
US gov’t sues four states, RWAs cross $30 billion: Month in Charts
The US CFTC has sued four states for trying to enforce state-level gambling laws on prediction markets, meanwhile Strategy stacked over 56,000 BTC.
- CoinDeskScore: 65
Banks push to slow stablecoin law as Agora races for charter
U.S. banks are looking to delay landmark stablecoin legislation even as crypto firms like Agora push ahead.
- CointelegraphScore: 65
Kast hires former SEC official Stephanie Allen to lead policy communications
Stablecoin payments company Kast hired former SEC adviser Stephanie Allen as it expands licensing, communications and policy efforts after an $80 million raise.
- CoinDeskScore: 65
Anchorage Digital and M0 team up to power next wave of regulated stablecoins
Anchorage seeks to expand its issuance platform through M0, and opens the door to a broad range of firms looking to launch U.S.-regulated stablecoins.
- The BlockScore: 65
Solana yield exchange Exponent raises $5 million seed led by Multicoin Capital
Solana Ventures, Solana Labs' Anatoly Yakovenko and Solana Foundation’s Nick Ducoff have all participated in the round.
- The BlockScore: 65
Coinbase’s ‘CUSHY’ stablecoin fund to launch tokenized share class via Superstate in Q2
The Coinbase Stablecoin Yield Fund aims to generate yield by lending stablecoins and private credit investment opportunities.
- CointelegraphScore: 65
Kraken bundles crypto and tokenized stocks in pursuit of multi-asset investors
The product lets investors access diversified exposure across digital assets and equities without managing individual positions.
- CointelegraphScore: 65
Stablecoins overtake Bitcoin in Latin America crypto purchases — Bitso
A Bitso report shows shifting user behavior as dollar-linked stablecoins gain traction for everyday financial use across Latin America’s inflation-hit economies.
- CoinDeskScore: 65
U.S. senators won't be weighing in on prediction markets bets after banning themselves
The Senate agreed unanimously to revise its rules to ban members and their staffs from wagers on prediction markets platforms.
- CointelegraphScore: 60
WLFI drops 14% as controversial token unlock goes to vote
The proposal to unlock more than 62 billion WLFI tokens over four to five years has 99.95% approval but is still facing backlash on X.
- The BlockScore: 60
Twenty One Capital shares rise as Tether pushes merger with Strike, Elektron
Tether has proposed that Twenty One Capital, a NYSE-listed bitcoin treasury venture, merge with Strike and Elektron Energy.
- The BlockScore: 60
Ark Invest buys $39 million worth of Robinhood shares, offloads $6 million of its own spot bitcoin ETF
Robinhood's stock closed down 13.2% after the company reported weaker first-quarter earnings the previous day.
- CryptoSlateScore: 60
Meta’s USDC pilot shows how stablecoins could capture billions in creator payouts
Libra launched in 2019, rebranded to Diem, and sold its blockchain assets to Silvergate Bank in 2022, three years of work that ended when regulators pushed back, and bank partners withdrew. On Apr. 29, Meta announced USDC payouts to eligible creators through compatible crypto wallets on Solana and P...
- CoinDeskScore: 60
The Green Beret was just the start: New data suggests a broader insider trading crisis on Polymarket
New data shows unusually high win rates in defense bets, building on research that 3% of traders drive prices and under 1% capture most profits.
- CoinDeskScore: 60
Germany’s AllUnity expands EURAU to Solana as euro stablecoins gain traction
The firm's MiCA-compliant euro token aims to speed up euro transfers and support regulated onchain finance as the euro stablecoin market doubled since early 2025.
- The BlockScore: 60
Bitcoin ‘trapped below’ key resistance level as ETF outflows stretch to three days amid Fed split
Analysts focused less on the pause itself and more on the Fed’s unusually deep split amid ongoing bitcoin ETF outflows and weak demand.
- CointelegraphScore: 60
OKX rolls out protocol for autonomous AI agents to pay and transact
OKX published a new open-standard payment protocol for autonomous AI agents in business and commerce, aiming to support more complex financial interactions.
- CointelegraphScore: 60
Solana ecosystem expands institutional push with Europe-focused research arm
Solana is launching a Swiss-based research institute and practitioner guide to help European financial institutions evaluate its blockchain as regulatory clarity and onchain usage grow.
- CoinDeskScore: 60
Polymarket taps Chainalysis to bring Wall Street-level oversight to crypto prediction markets
By partnering with Chainalysis to monitor its blockchain data in real-time, Polymarket is signaling to both users and regulators that it is serious about eliminating insider trading and market manipulation.
- CointelegraphScore: 60
Bitcoin Coinbase Premium threatens bear flag repeat with BTC price at $76K
Bitcoin price action risked repeating January's breakdown despite April being poised to offer the best monthly BTC price gains in a year.
- CointelegraphScore: 60
Three reasons why $3K ETH price target is back for May
Despite Ether’s 8% deviation from 10-week highs above $2,460, data suggests that ETH's price could still rise toward $3,000 as a new month begins.
- The BlockScore: 60
Senate moves to ban themselves from prediction market trading amid insider concerns
U.S. senators are now barred from trading on prediction markets following the unanimous passage of a resolution on Thursday.
- DecryptScore: 60
Senate Votes to Ban Senators and Staff From Using Prediction Markets
S. Res. 708 prohibits senators and staff from using prediction markets, and became effective immediately upon passage.
- CoinDeskScore: 55
Dogecoin zooms 10%, breaking away from bitcoin as open interest hits a yearly peak
Open interest in DOGE-tracked futures climbed to 15.36 billion tokens, a sign that traders are adding fresh leverage as the memecoin’s price surges.
- The BlockScore: 55
MegaETH token goes live as major exchanges open MEGA trading
MegaETH’s MEGA token went live on April 30, completing a seven-day countdown triggered after the project hit its first KPI with 10 live apps.
- The BlockScore: 55
Tether-backed startup Oobit offers AI bots Visa-supported corporate expense cards
Agent Cards will enable AI agents to make purchases using a USDT balance without "requiring a human in every approval loop.”
- CointelegraphScore: 55
THORWallet partners with Unblock to expand global non-custodial Mastercard access
THORWallet has partnered with Swiss-regulated provider Unblock to expand global access to non-custodial Mastercard solutions, advancing self-custodial finance adoption.
- CointelegraphScore: 55
Spain emerges as leading EURC retail market in Europe, Brighty data shows
Brighty data shows Spain leading EURC retail usage, offering an early look at how euro stablecoins are being used under MiCA.
- CoinDeskScore: 55
From Cathie Wood to Cantor Fitzgerald, the big money is betting that Robinhood’s crypto slump is just a temporary speed bump
Cathie Wood’s Ark Invest snapped up over 500,000 shares of Robinhood on Wednesday, joining a wave of analysts who believe a surge in April trading activity will outweigh a recent earnings disappointment.
- CoinDeskScore: 50
Trump-backed World Liberty Financial races toward 62 billion token unlock with near-unanimous vote
Proposal introduces vesting for 40.7 billion insider tokens after 2-year cliff, even as voting power remains concentrated among a handful of large holders
- The BlockScore: 50
Stablecoin fintech KAST appoints former SEC advisor to lead policy communications
KAST said Stephanie Allen will bolster KAST's public profile and reputation among policymakers, thought leaders, and media.
- CoinDeskScore: 50
Coinbase's asset manager to offer stablecoin credit fund with tokenized share class
The fund, dubbed CUSHY, targets yield from onchain lending and private credit, offering tokenized access through Superstate for institutional investors.
- DecryptScore: 50
Morning Minute: Bitcoin Falls After Powell's Likely Final FOMC
No rate cuts are coming any time soon, Big Tech earnings gave AI bulls more to work with, and Meta is back in crypto payments with USDC creator payouts.
- CointelegraphScore: 50
Bitcoin analysts explain why BTC price can’t take out $80K
A large overhead supply cluster, increased profit-taking activity and the resumption of spot Bitcoin ETF outflows are key factors keeping BTC price pinned below $80,000.
- DecryptScore: 50
MegaETH Token Launches as Ethereum Layer-2 Network's Novel Rewards System Is Tested
Ethereum layer-2 network MegaETH will unlock its native MEGA token over time, and reward it to users, as key benchmarks are met.
- CointelegraphScore: 50
Sentora brings institutional DeFi to the public with the launch of its Smart Yield platform
Sentora has announced that Sentora Smart Yield is now publicly available, opening access to its DeFi vault discovery and monitoring platform to all users.
- DecryptScore: 50
OpenAI Rolls Out Advanced Account Security for ChatGPT Users
OpenAI's new opt-in security feature requires passkeys, limits recovery options, and excludes chats from training.
- CoinDeskScore: 45
Hyperliquid’s HYPE token could be its prediction market weapon, Arthur Hayes says
HIP-4 could become a dominant prediction-market venue because Hyperliquid users can get economic exposure to platform usage through HYPE, unlike users of Polymarket or Kalshi.
- CryptoSlateScore: 45
Bitcoin’s next risk is hiding in the gap between debt and liquidity
The old Bitcoin playbook ran on the simple logic that when global M2 expands, capital flows into risk assets, and Bitcoin captures a disproportionate share. That relationship powered the 2020-2021 bull market, and crypto Twitter spent the better part of 2024 charting M2 overlays as proof that the ne...
- CoinDeskScore: 45
XRP hits FOMO zone as Rakuten Pay partnership drives social chatter to greed levels
XRP's positive-to-negative sentiment ratio on social media spiked into the FOMO zone on April 29, the same level that has historically marked local tops in the token, per Santiment data.
- CointelegraphScore: 45
Centrifuge brings Apollo, Janus tokenized credit to Monad
The move expands DeFi institutional assets to include Wall Street heavy hitters.
- CointelegraphScore: 40
Ethereum to $60K? It's a 'generational play' for ETH bull Tom Lee, says analyst
ETH price is retesting a long-term support trend line that previously preceded a 5,200% rally, a fractal setup pointing to a potential move toward $60,000 by 2030.
- CoinDeskScore: 40
Seasonal trends favor bulls even as bitcoin ends April in a defensive mood
Your day-ahead look for April 30, 2026
- CointelegraphScore: 40
Did Bitcoin bottom versus gold? BTC price will reach $167K in 2027 if history repeats
Bitcoin’s 40% rebound against gold signals a potential bottom, echoing past setups that preceded strong BTC/USD rallies.
- CoinDeskScore: 40
Crypto for Advisors: Breaking down the Sui blockchain
Sui is a differentiated Layer-1 blockchain, combining novel object-based architecture and parallel execution for high throughput. It's optimized for consumer Web3 apps.
- DecryptScore: 40
Agentic Memory: Walrus Takes On AI's Next Big Bottleneck
Long-term memory limits what AI agents can do. Walrus is going after it with MemWal plus new OpenClaw and NemoClaw integrations.
- DecryptScore: 40
Ubuntu Linux Is Adding AI Features—Its Users Are Worried
Canonical announced plans to bake AI into Linux's most popular distro. The community that chose Ubuntu specifically to avoid this kind of thing was not thrilled.
- DecryptScore: 40
Elon Musk Says xAI Used OpenAI Models to Train Grok
The admission in federal court is a rare acknowledgment of the use of distillation techniques as AI firms compete to build more capable and cheaper models.
- DecryptScore: 40
Mistral AI Drops New Open-Source Model. The Internet Is Not Impressed, Except for One Thing
Mistral Medium 3.5 is the rare Western entry in the open-source top tier, but it costs multiples more than Chinese rivals that beat it on benchmarks.
- The BlockScore: 35
‘Not circular’: Benchmark defends Strategy’s STRC bitcoin accumulation model
Some market watchers liken Strategy's STRC preferred stock to a "circular" Ponzi scheme model, but Benchmark disagrees.
- CoinDeskScore: 30
CoinDesk 20 performance update: Aptos (APT) gains 4.4% as nearly all assets rise
Internet Computer (ICP), up 2.4% from Wednesday, joined Aptos (APT) as a top performer.
- CoinDeskScore: 30
A Polymarket-linked bet on the weather in France forecasts a major data issue
The incident shows that as more real-world outcomes become tradable, the real bottleneck is not trading itself, but the integrity and certification of the data used for settlement, argues Hallali.
- CointelegraphScore: 30
HederaCon 2026 comes to Miami Beach on May 4 — Last chance to join leaders in tokenization and digital finance
HederaCon 2026 will take place on May 4 at the Faena Forum in Miami Beach, bringing together leaders from global finance, policy, and enterprise to explore how tokenization, stablecoins, interoperability, and AI-powered financial systems are moving into real-world adoption.
- DecryptScore: 30
Crypto Is the Most Muted Topic on Elon Musk’s X, Ahead of Politics: Product Head
Internal data shows users mute crypto more than politics and global conflict on X’s For You feed.
- The BlockScore: 25
99.2% of omni-chain Tether-backed stablecoin holders have less than $1,000 USDT0
USDT0 is now the third-largest holder of Tether's USDT stablecoin, which it uses to back its multi-chain asset 1:1.
- CointelegraphScore: 20
Crypto becomes most muted topic on X, and AI slop may be the culprit
Crypto has become the most-muted topic on X since the platform launched its snooze feature, with AI-generated spam and InfoFi posting likely driving users to tune it out.
- CryptoSlateScore: 20
Crypto is the most “muted” term on X as public splits between believers and avoiders
X has given users a new way to turn down the noise in their For You feeds. The first signal from that tool should make the crypto industry uncomfortable. According to X product executive Nikita Bier, crypto ranked as the most-snoozed topic since the platform began rolling out topic snoozing for Prem...
- DecryptScore: 20
OpenAI Finally Explains Why ChatGPT Wouldn't Stop Talking About Goblins
Why did OpenAI have to write "never mention goblins" into its production code on ChatGPT? The company has published a post-mortem.