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Deepcoin becomes first CEX to integrate Polymarket ‘event contracts’

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Deepcoin becomes first CEX to integrate Polymarket 'event contracts'

Deepcoin is the first centralized exchange to integrate Polymarket event contracts, syncing quotes, liquidity and clearing so users can trade real‑world events with CEX tooling.

Summary

  • Deepcoin has launched synchronized “Event Contracts” in partnership with Polymarket, becoming the first centralized exchange to plug directly into its markets.
  • The integration offers real‑time quotes, shared liquidity and unified clearing, letting users trade Polymarket‑style contracts with CEX speed and tooling.
  • Deepcoin says it will keep refining the product toward a more “pure and professional” event‑trading experience tied to real‑world outcomes.

Cryptocurrency exchange Deepcoin has entered a formal partnership with prediction market platform Polymarket to launch “Event Contracts,” marking the first time a centralized exchange has integrated directly with Polymarket’s real‑money event markets. Announced on April 1, the tie‑up allows Deepcoin users to access “real quotes and liquidity support synchronized with global top event markets” while trading through standard exchange accounts, according to a company statement reported by ChainCatcher.

Under the new structure, both sides have implemented “deep integration of underlying logic and clearing synchronization,” so that positions taken via Deepcoin are effectively mirrored one‑for‑one with corresponding Polymarket contracts. This design means users can “directly participate in popular contracts on Polymarket through their Deepcoin accounts, enjoying CEX trading speed” and order‑book style execution that aligns with “professional trading habits,” the exchange said.

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Deepcoin framed the launch as the first step in building out a dedicated, institutional‑grade venue for real‑world event trading. The platform stated it would “continue to refine its products in the future to create a more pure and professional trading experience,” signaling plans to iterate on contract design, risk management and user analytics as volumes scale. By routing demand from a centralized venue into on‑chain prediction markets, the partnership effectively opens CEX rails into a segment historically dominated by niche DeFi interfaces and bespoke OTC flows.

The move lands just as regulated event markets and decentralized prediction protocols are drawing heightened attention from both venture capital and regulators. In March, Kalshi’s latest financing pushed its valuation to $22 billion as demand for macro and political contracts surged, according to coverage compiled by Yahoo Finance, while a recent Forbes analysis described prediction markets as “on the cusp of becoming core financial infrastructure” amid rising institutional interest. At the same time, U.S. Commodity Futures Trading Commission enforcement director David Miller has warned that insider‑trading laws apply fully to prediction markets, underscoring the compliance pressure that CEX integrations like Deepcoin’s will have to navigate.

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Crypto World

US Law Firm Apologizes For AI Hallucinations in Filing

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US Law Firm Apologizes For AI Hallucinations in Filing

Sullivan & Cromwell’s Andrew Dietderich said the company has AI policies to prevent incorrect citations and other errors, but procedures weren’t followed on this occasion.

Wall Street law firm Sullivan & Cromwell has apologized to a federal judge after submitting a court filing that contained around 40 incorrect citations and other errors caused by AI hallucinations.

“We deeply regret that this has occurred,” Andrew Dietderich, co-head of Sullivan & Cromwell’s global restructuring team, wrote Friday in a letter to Chief Judge Martin Glenn of the US Bankruptcy Court for the Southern District of New York.

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“The Firm and I are keenly aware of our responsibility to ensure the accuracy of all submissions including under Local Bankruptcy Rule 9011-1(d), and I take responsibility for the failure to do so,” he said of an emergency motion filed nine days earlier.

Excerpt from Andrew Dietderich’s letter to Chief Judge Martin Glenn. Source: Sullivan & Cromwell

The incident highlights the risk AI tools can pose in high-stakes professional work without proper oversight. A database managed by legal technologist Damien Charlotin has recorded 1,334 incidents of AI hallucinations in court filings around the world, including more than 900 in the US.

Charlotin pointed out that most of these hallucinations involve fabricated citations, though AI-generated legal arguments have also occasionally been identified.

Dietderich said Sullivan & Cromwell has policies in place for the use of AI tools, which include a review of the citations it uses, but said the policies weren’t followed.

“Regrettably, this review process did not identify the inaccurate citations generated by AI, nor did it identify other errors that appear to have resulted in whole or in part from manual error.”

Sullivan & Cromwell is one of the largest law firms in the US by revenue, ranking 30th on the AmLaw Global 200. The firm also represented crypto exchange FTX in its bankruptcy case.

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Sullivan & Cromwell is conducting an internal investigation

Dietderich said the law firm took “immediate remedial measures,” including a full review of the circumstances that led to the errors. 

Related: Coinbase’s AI payments protocol x402 launches app store for AI agents

The firm is also “evaluating whether further enhancements to its internal training and review processes are warranted,” Dietderich said.

Dietderich also noted that the errors were spotted by a rival law firm.

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“I also called Boies Schiller Flexner LLP on Friday to thank them for bringing this matter to our attention and to apologize directly to them as well,” he said. 

Magazine: IronClaw rivals OpenClaw, Olas launches bots for Polymarket — AI Eye