--- title: "Stellar announces Bell, Protocol 30 upgrade with quantum-safe and faster-ledger work" description: "A separate upgrade guide framed Bell as preparing businesses and developers for breaking changes and set out key dates and release links. Reported by Stellar…" language: en canonical: "https://whycoinmoves.com/en/events/stellar-introducing-bell-protocol-30-stellar-33818880d8cb8d" published: 2026-10-27T12:25:40.000Z updated: 2026-10-27T13:27:02.000Z indexable: true --- # Stellar announces Bell, Protocol 30 upgrade with quantum-safe and faster-ledger work A separate upgrade guide framed Bell as preparing businesses and developers for breaking changes and set out key dates and release links. Reported by Stellar… Attributed sources: [Stellar Blog]() ## Key facts A separate upgrade guide framed Bell as preparing businesses and developers for breaking changes and set out key dates and release links. Evidence strength: Official source, 1 publisher group(s) (Stellar Blog). After site detection, observed returns were 5 minutes: +0.14% (difference from BTC +0.05 pp; Oct 27, 2026, 12:25 → Oct 27, 2026, 12:31, UTC; Gate · USDT); 1 hour: -0.04% (difference from BTC -0.11 pp; Oct 27, 2026, 12:25 → Oct 27, 2026, 13:25, UTC; Gate · USDT) In the preceding 30 days, the 99th percentile of absolute hourly returns was 2.35% (OKX · USDT; cutoff Oct 27, 2026, 12:25, UTC). ## Returns after site detection | Window | Return | BTC | Difference from BTC | Actual sampled interval (UTC) | Source | | --- | --- | --- | --- | --- | --- | | 5 minutes | +0.14% | +0.09% | +0.05 pp | Oct 27, 2026, 12:25 → Oct 27, 2026, 12:31 | Gate · USDT | | 1 hour | -0.04% | +0.07% | -0.11 pp | Oct 27, 2026, 12:25 → Oct 27, 2026, 13:25 | Gate · USDT | ## Historical hourly baseline | Metric | Value | | --- | --- | | Coverage | 100.0% (720/720) | | Median absolute hourly return | 0.32% | | 99th percentile of absolute hourly returns | 2.35% | | BTC beta | 1.55 | | Source / cutoff (UTC) | OKX · USDT / Oct 27, 2026, 12:25 | ## Claims and open questions - Stellar's blog post says Bell (Protocol 30) is the next Stellar upgrade, adding muxed contract addresses for smart accounts, post-quantum signature verification in smart contracts and millisecond ledger timing. - The Stellar blog says Bell is designed to make smart accounts ready for businesses at scale and to begin work on two longer-term goals: quantum-safe signatures and faster ledgers. - Stellar's upgrade guide says it is designed to help businesses and developers prepare for Bell, Protocol 30, with key dates, release information, preparation steps and a summary of breaking changes. - What exact activation date Protocol 30 will take effect on the Stellar mainnet, and confirmation from validators or the Stellar Development Foundation. - Which breaking changes the upgrade guide lists for SDKs and infrastructure operators, and how they are expected to affect existing smart-account deployments. ## Source evidence - [Introducing Bell, Protocol 30 on Stellar]() — Stellar Blog; published Oct 20, 2026, 13:34; received Oct 27, 2026, 12:25 (UTC). - [Bell, Protocol 30 Upgrade Guide]() — Stellar Blog; published Oct 20, 2026, 13:28; received Oct 27, 2026, 12:25 (UTC). ## Recent XLM events and market reactions - [Stellar Core: v30.0.0 released]() — Published Oct 16, 2026, 21:09 (UTC) · Official source (1 publisher) · Project updates · Complete reaction windows unavailable - [Full coin archive]() ## Recent Project updates events on other coins - [ZEC: Zcash Foundation releases Zebra 7.0.0 with NU7 support for Mainnet]() - [NEAR: NEAR Protocol nearcore: 2.14.0 released]() - [TAO: Bittensor subtensor: v486 released]() - [Project updates]() ## Research for this archive - [Will Bitcoin go back up? Every crash since 2011 and its recovery time]() Evidence levels describe source coverage, not the probability that a report is true. Price moves and their timing cannot establish a cause; minute samples show an observed interval and alert thresholds are heuristics. Explanations are model-assisted, with citations and figures checked. Source titles stay in their original language; full articles are not republished. [Methods and limitations]()