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Polymarket Tightens Insider Trading Rules

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Polymarket Tightens Insider Trading Rules

The prediction market is updating insider trading and manipulation rules days after inking an exclusive partnership with Major League Baseball.

Polymarket on Monday announced updated market integrity rules across both its DeFi platform and its CFTC-regulated U.S. exchange, amplifying requirements governing insider trading and market manipulation. The new standards appear in the DeFi platform’s Terms of Use and the Polymarket US Rulebook.

“Markets thrive on clarity,” said Neal Kumar, Polymarket’s chief legal officer, in a release.

Prohibited Behavior

The rules spell out three categories of banned insider trading conduct. First, participants may not trade on any contract if they possess confidential information about the outcome of the underlying event, where using that information would violate a preexisting duty of trust or confidence.

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Second, participants may not trade on confidential information passed to them by someone who owed a preexisting duty of trust or confidence to someone else, if they know or have reason to know that the tipper would be prohibited from trading on it themselves.

Third, participants may not trade on any contract if they hold a position of authority or influence sufficient to affect the outcome of the underlying event.

Beyond insider trading, both platforms prohibit all types of fraud and market manipulation — including spoofing, wash trading, and fictitious transactions — as well as self-dealing, front-running, information misuse, attempted manipulation, and disruptive practices.

Enforcement

On the DeFi side, Polymarket maintains a multi-layered monitoring system and partners with surveillance and technology specialists, and all trades are executed on the Polygon blockchain, providing built-in on-chain transparency. When the platform or community flags unusual activity, Polymarket said it may ban wallet addresses or refer the matter to law enforcement.

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On Polymarket US, surveillance operates at three levels: partnerships with trade surveillance specialists, a control desk conducting real-time monitoring, and a Regulatory Services Agreement with the National Futures Association to detect rule violations and investigate offenders. Sanctions on the U.S. exchange can include suspension, termination, monetary penalties, or regulatory referrals.

The rule overhaul follows last week’s announcement that MLB named Polymarket its official and exclusive prediction market exchange. The deal centers on an integrity framework that restricts markets deemed to pose manipulation risk, including contracts on individual pitches, manager decisions, and umpire performance. MLB also signed an information-sharing agreement with the CFTC, the first such deal between the derivatives regulator and a professional sports body.

Polymarket received CFTC approval to operate in the U.S. in November 2025, following a $2 billion strategic investment from Intercontinental Exchange. The platform has since begun rolling out its U.S. app, starting with sports markets.

This article was written with the assistance of AI workflows. All our stories are curated, edited and fact-checked by a human.

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Tellor Upgrades Palmito Testnet to v6.1.4 With TokenBridge V2 Launch

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Tellor (TRB crypto) is set to upgrade its Palmito testnet to version 6.1.4 on Monday, March 23, 2026, at approximately 11:30 AM EST. The update introduces TokenBridge V2, a major architectural overhaul designed to harden cross-chain data transmission and improve upgrade resilience. This release follows a rapid sequence of four testnet iterations since January, underscoring the team’s focus on securing decentralized oracle infrastructure.

The upgrade represents a critical checkpoint for the protocol. It moves the network closer to a mainnet implementation that can handle bridging events without disruptive token changes. The focus here is continuity.

Key Takeaways
  • Upgrade Date: The Palmito testnet upgrade v6.1.4 executes on March 23 at 11:30 AM EST (16:30 UTC).
  • What’s New: TokenBridge V2 introduces isolated bridge activity and improved pause mechanics for safer cross-chain operations.
  • Development Pace: This marks the fourth major testnet release in Q1 2026, signaling high development velocity for the oracle provider.

The Mechanics of Tellor Crypto TokenBridge V2 Explained

Tellor’s v6.1.4 upgrade hits at block height 18783000 on the Palmito chain. The headline change is the transition from the legacy bridge to TokenBridge V2.

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The separation matters. New bridge activity runs independently from older contract interactions, which means Tellor can isolate risks and push future upgrades without freezing the entire network.

The migration itself is handled automatically. Tellor Layer executes a single synthetic withdrawal to move locked TRB from V1 to V2. Because the legacy bridge caps withdrawals at 5%, the migration happens gradually. Users on the testnet do not need to touch anything.

TokenBridge V2 also introduces stronger pause mechanics, letting the protocol freeze bridge operations fast if a security threat emerges. The one thing users need to do is stop TRB deposits 12 hours before the upgrade. Withdrawals submitted before that window process normally once it completes.

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Four testnet upgrades in under 3 months. Most protocols separate these phases by quarters. Tellor is doing it in weeks.

The pace signals something. This is not routine maintenance. The team is stress-testing infrastructure aggressively, hardening the oracle stack to compete in a sector where reliability is everything. A robust bridge is not optional for a protocol trying to be a trusted data source across multiple chains.

If Palmito holds, mainnet TokenBridge V2 is the next move.

Discover: The best new crypto in the world

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Fed fallout slows Crypto ETP inflows to $230 million

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Fed fallout slows Crypto ETP inflows to $230 million

Crypto investment products posted another week of net inflows, but the pace slowed as markets reacted to the latest US Federal Reserve meeting. 

Summary

  • Crypto ETPs extended their inflow streak to four weeks, though momentum dropped sharply after FOMC.
  • Bitcoin funds added $219.2 million, while Ether products saw $27.5 million in weekly outflows.
  • US spot Bitcoin ETFs stayed positive, but spot Ether ETFs recorded fresh weekly outflows.

Data from CoinShares showed that digital asset exchange-traded products brought in $230 million last week, extending the positive run to four straight weeks.

CoinShares reported that crypto ETPs recorded $230 million in net inflows during the week. That figure was well below the $1.06 billion posted a week earlier, showing that investor demand cooled as the week progressed.

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James Butterfill, head of research at CoinShares, linked the slowdown to a “hawkish pause” reading of the Federal Open Market Committee meeting. He said the weekly pattern supported that view, as products saw solid inflows early in the week before flows turned lower after the Fed decision.

Bitcoin (BTC) investment products drew the largest share of last week’s inflows. CoinShares data showed that Bitcoin funds added $219.2 million, accounting for nearly all of the week’s net gains across the digital asset product market.

Ether products moved in the opposite direction. They posted $27.5 million in outflows, ending a three-week inflow streak. The reversal came as investors reduced exposure after the Fed meeting and a broader change in risk appetite.

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In addition, Solana continued to stand out among altcoin-focused products. Solana ETPs brought in $17 million last week, marking the seventh straight week of inflows. That pushed the total for the streak to $136 million.

Other digital assets also posted gains. Chainlink products recorded $4.6 million in inflows, while Hyperliquid products added $4.5 million. These numbers showed that interest in selected altcoins remained in place even as broader market momentum slowed.

US spot Bitcoin ETFs stay positive for the week

US spot Bitcoin ETFs contributed a large share of Bitcoin-related inflows. SoSoValue data showed that these funds brought in $95.2 million last week, helping extend their winning run to four consecutive weeks.

The four-week stretch lifted total gains for US spot Bitcoin ETFs to $2.2 billion over that period. Even so, the funds still showed about $400 million in net outflows for the year. US spot Ether ETFs also lost momentum, recording about $60 million in weekly outflows and $599 million in outflows year to date.

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Strategy Buys 1,031 Bitcoin Using MSTR Stock Sales

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Strategy Buys 1,031 Bitcoin Using MSTR Stock Sales

Michael Saylor’s Strategy, the world’s largest public holder of Bitcoin (BTC), bought another 1,031 Bitcoin last week in a much smaller purchase than its previous two weekly buys, funding the acquisition with sales of Class A common stock.

Strategy acquired 1,031 Bitcoin for $76.6 million last week, according to an 8-K filing with the US Securities and Exchange Commission on Monday.

The purchases were made at an average price of $74,326 per coin, below the company’s overall average acquisition price of $75,694. Bitcoin averaged around $70,871 for the week of March 16-22, based on daily closing prices.

The new acquisitions bring Strategy’s holdings to 762,099 BTC, acquired for a total cost of roughly $57.69 billion, the company said.

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Source: SEC

Common stock funded the latest buy

Strategy’s relatively modest purchase follows larger Bitcoin acquisitions recently, including a 22,337 BTC buy reported last Monday and a 17,994 BTC buy a week earlier.

The 22,337 BTC ($1.6 billion) purchase ranks among Strategy’s largest on record and was largely funded through sales of its perpetual preferred equity, Stretch (STRC). The stock generated approximately $1.2 billion, accounting for about 75% of the total purchase.

Related: Strategy records biggest STRC issuance day with estimated 1,420 BTC buy

Unlike the prior week’s funding mix, the latest purchase appears to have been funded through sales of Strategy’s Class A common stock rather than preferred equity.

Source: SEC

Strategy has bought 41,362 Bitcoin for around $2.93 billion in March. With Bitcoin trading at $70,430 at the time of writing, the company is down around 7% on its BTC holdings, now worth around $54 billion, according to data from CoinGecko.

Related: Strategy halts Bitcoin buying via STRC: Will BTC price dip again?

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Strategy’s holdings are roughly 3% below the Bitcoin holdings of BlackRock’s iShares Bitcoin Trust ETF (IBIT), which held about 785,300 BTC on behalf of its clients after the close of trading on Friday.

US spot Bitcoin ETFs collectively held nearly 1.3 million BTC as of March 20, representing roughly 6.1% of the 21 million maximum Bitcoin supply, according to data from WalletPilot.

Magazine: Metaplanet’s Japan Bitcoin bet, Bithumb ordered suspension: Asia Express