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NYSE Develops Blockchain Platform for Tokenized Stock Trading

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The New York Stock Exchange (NYSE) is developing a new blockchain-based platform that will allow trading of tokenized stocks and exchange-traded funds (ETFs) with 24/7 access and near-instant settlement.

The initiative is part of a broader effort by NYSE and its parent company, Intercontinental Exchange (ICE), to modernize market infrastructure and meet growing global demand for US equities. According to the announcement, the new platform will combine ICE’s existing Pillar trading engine with blockchain-powered post-trade systems.

It will support multiple blockchains for custody and settlement, allowing trades to be funded and settled in real time using stablecoins instead of the current one-day (T+1) settlement cycle used in US equity markets. The platform is subject to regulatory approval and is expected to support a new NYSE trading venue specifically designed for tokenized securities.

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Tokenized stocks are digital representations of traditional company shares issued on a blockchain. They give investors exposure to stock prices while offering key benefits such as 24/7 trading, faster settlement, and fractional ownership. These features are seen as especially attractive to global investors who cannot easily trade during standard US market hours.

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NYSE and ICE Push Toward 24/7, Fully On-Chain Markets

The move aligns with NYSE’s broader push to extend trading hours. In October 2024, the exchange announced plans to seek approval from the US Securities and Exchange Commission (SEC) to extend weekday trading to 22 hours. Nasdaq has also revealed plans to introduce 24-hour weekday trading, highlighting a wider industry shift toward always-on markets.

ICE described the tokenized securities platform as a core part of its digital strategy. This includes building on-chain clearing infrastructure, supporting 24/7 trading, and potentially integrating tokenized collateral. ICE is also working with major banks such as BNY and Citibank to support tokenized deposits, helping market participants manage liquidity outside traditional banking hours.

NYSE Group President Lynn Martin said the exchange aims to lead the industry toward fully on-chain solutions while maintaining strong regulatory standards. ICE executives described the initiative as a pivotal step toward creating onchain infrastructure for trading, settlement, custody, and capital formation in the next era of global finance.

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Bitcoin’s Quantum Migration May Reveal Number of Satoshi Coins: Adam Back

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Bitcoin's Quantum Migration May Reveal Number of Satoshi Coins: Adam Back

Blockstream CEO Adam Back said Thursday that a future post-quantum migration of Bitcoin could help clarify how many coins linked to Satoshi Nakamoto remain accessible, because any owner wanting to protect vulnerable holdings would need to move them to a new address format.

Speaking at Paris Blockchain Week, Back said such a migration would likely give users ample time to move funds and argued that coins left unmoved after that process could reasonably be treated as lost.

“This migration to post-quantum address format may tell us how many of those coins [Satoshi] still has,” said Back, adding that the pseudonymous creator has an estimated 500,000 to 1 million Bitcoin (BTC).

Satoshi’s Bitcoin stash has ignited heated debate among Bitcoin holders concerned by the quantum computing threat. On Wednesday, Jameson Lopp and five co-authors published a Bitcoin Improvement Proposal aimed at restricting the future movement of coins held in quantum-vulnerable address formats, including older coins whose public keys have already been exposed.

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Adam Back, keynote speech at Paris Blockchain Week in 2026. Source: Cointelegraph

Blockchain data platform Arkham estimates that Nakamoto-linked wallets hold 1.09 million Bitcoin, currently valued at $81.6 billion.

Related: Bernstein says Bitcoin market already priced in quantum risk

Back sees long runway on quantum

Back said Bitcoin developers and holders still have substantial time to prepare, arguing that a quantum breakthrough capable of threatening Bitcoin signatures is at least 20 years away.

He argued that today’s quantum computers are “less powerful than a $5 calculator” and that some of their issues become more pressing as these systems scale, such as their energy consumption.

Back said that runway should give developers and users ample time to develop a post-quantum path and migrate to a new quantum-resistant standard underpinned by hash-based signatures.

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Hash-based signature schemes for Bitcoin, research paper. Source: Blockstream Research

In December 2025, Back’s Blockstream Research released a paper proposing a hash-based signature scheme that offers a “promising path for securing Bitcoin in a post-quantum world,” as a quantum-safe replacement for the ECDSA and Schnorr signatures. Under the proposal, security would rely solely on hash function assumptions, similar to the ones currently used in Bitcoin’s network design.

The Elliptic Curve Digital Signature Algorithm (ECDSA) uses elliptic-curve cryptography to verify the authenticity and integrity of a message. Schnorr signatures are another signature scheme praised for enhancing privacy and reducing data size, due to their ability to combine multiple signatures into one.

Magazine: Bitcoin vs. the quantum computer threat — Timeline and solutions (2025–2035)