# \#jam **URL:** https://forum.polkadot.network/tag/jam/74.md [Latest](https://forum.polkadot.network/latest.md) · [Categories](https://forum.polkadot.network/categories.md) · [Tags](https://forum.polkadot.network/tags.md) --- ## [Exploring the potential for a shared geospatial service as a common primitive for Polkadot Products and JAM.](https://forum.polkadot.network/t/exploring-the-potential-for-a-shared-geospatial-service-as-a-common-primitive-for-polkadot-products-and-jam/18746)
**Author:** [@C.M](https://forum.polkadot.network/u/C.M)\ **Replies:** 1\ **Last updated:** [September 25, 2026, 11:46am UTC](https://forum.polkadot.network/t/exploring-the-potential-for-a-shared-geospatial-service-as-a-common-primitive-for-polkadot-products-and-jam/18746 "2026-09-25T11:46:50Z")
Could Polkadot use a native Geospatial Service as a common primitive for Products and JAM? I have been thinking about a potentially missing primitive in the Polkadot Products/JAM stack: geospatial infrastructure. I don’… --- ## [A Proposal for a Kusama Future on JAM Prime](https://forum.polkadot.network/t/a-proposal-for-a-kusama-future-on-jam-prime/18683)
**Author:** [@emielsebastiaan](https://forum.polkadot.network/u/emielsebastiaan)\ **Replies:** 26\ **Last updated:** [September 25, 2026, 11:22am UTC](https://forum.polkadot.network/t/a-proposal-for-a-kusama-future-on-jam-prime/18683 "2026-09-25T11:22:03Z")
Thanks to everyone who contributed to the discussion following our initial post, Kusama Futures in the JAM Era. The feedback has been extremely useful and, above all, shows that people care deeply about Kusama. Special t… --- ## [JamScript: Compose Like Smart Contracts, Scale Like Rollups, Build Like Web2 on JAM](https://forum.polkadot.network/t/jamscript-compose-like-smart-contracts-scale-like-rollups-build-like-web2-on-jam/18704)
**Author:** [@libingjiang47](https://forum.polkadot.network/u/libingjiang47)\ **Replies:** 0\ **Last updated:** [September 20, 2026, 5:09pm UTC](https://forum.polkadot.network/t/jamscript-compose-like-smart-contracts-scale-like-rollups-build-like-web2-on-jam/18704 "2026-09-20T17:09:41Z")
JamScript is a language designed for building applications on JAM. It allows developers to build JAM applications in a way that feels close to traditional application development, without needing to understand JAM’s unde… --- ## [Kusama Futures in the JAM Era](https://forum.polkadot.network/t/kusama-futures-in-the-jam-era/18482)
**Author:** [@emielsebastiaan](https://forum.polkadot.network/u/emielsebastiaan)\ **Replies:** 21\ **Last updated:** [September 19, 2026, 3:07pm UTC](https://forum.polkadot.network/t/kusama-futures-in-the-jam-era/18482 "2026-09-19T15:07:57Z")
In memoriam - Yayoi Kusama (1929–2026) As this discussion draft was published, the passing of Yayoi Kusama was announced. The network considered in these pages shares her name and, fittingly, something of her spirit: r… --- ## [Dynamically priced JAMKB via decaying deposits](https://forum.polkadot.network/t/dynamically-priced-jamkb-via-decaying-deposits/17971)
**Author:** [@kremena](https://forum.polkadot.network/u/kremena)\ **Replies:** 11\ **Last updated:** [August 6, 2026, 8:52pm UTC](https://forum.polkadot.network/t/dynamically-priced-jamkb-via-decaying-deposits/17971 "2026-08-06T20:52:49Z")
Dynamically priced JAMKB via decaying deposits by Jonas Gehrlein (@jonas) and Kremena Valkanova (@kremena) Disclaimer: This is posted as a contribution to community discussion. It is a proposal only: nothing here is a c… --- ## [Announcing PVM2: Reimagining PVM towards standard RISC-V](https://forum.polkadot.network/t/announcing-pvm2-reimagining-pvm-towards-standard-risc-v/17748)
**Author:** [@sorpaas](https://forum.polkadot.network/u/sorpaas)\ **Replies:** 11\ **Last updated:** [June 8, 2026, 7:06pm UTC](https://forum.polkadot.network/t/announcing-pvm2-reimagining-pvm-towards-standard-risc-v/17748 "2026-06-08T19:06:53Z")
Background PVM is the instruction set architecture (ISA) of PolkaVM. This is the planned ISA to be deployed on the JAM Chain, advertised to be fast. In March, we started Grey (later known as JAR). JAR’s virtual machine J… --- ## [Grey/JAR Update: Lean 4 specification, linear memory model, faster than PolkaVM](https://forum.polkadot.network/t/grey-jar-update-lean-4-specification-linear-memory-model-faster-than-polkavm/17356)
**Author:** [@sorpaas](https://forum.polkadot.network/u/sorpaas)\ **Replies:** 5\ **Last updated:** [May 29, 2026, 2:06am UTC](https://forum.polkadot.network/t/grey-jar-update-lean-4-specification-linear-memory-model-faster-than-polkavm/17356 "2026-05-29T02:06:11Z")
Grey is an experiment for an LLM agent to write a JAM node implementation. You can read the initial announcement here. Here are some updates I would like to report on behalf of Grey. Lean 4 formalization We created the… --- ## [Announcing Grey 0.1: LLM tries to build a JAM node implementation](https://forum.polkadot.network/t/announcing-grey-0-1-llm-tries-to-build-a-jam-node-implementation/17284)
**Author:** [@sorpaas](https://forum.polkadot.network/u/sorpaas)\ **Replies:** 3\ **Last updated:** [May 28, 2026, 2:13pm UTC](https://forum.polkadot.network/t/announcing-grey-0-1-llm-tries-to-build-a-jam-node-implementation/17284 "2026-05-28T14:13:19Z")
How long does it take for an LLM to write a JAM node implementation? The constraints are simple: I’m allowed to occasionally guide it, but that’s it – the LLM must write all the code. The process (written by me, the hum… --- ## [Ensuring JAM Development Sustainability: Is It Time for a Dedicated JAM Bounty Program?](https://forum.polkadot.network/t/ensuring-jam-development-sustainability-is-it-time-for-a-dedicated-jam-bounty-program/16229)
**Author:** [@danicuki](https://forum.polkadot.network/u/danicuki)\ **Replies:** 26\ **Last updated:** [May 4, 2026, 5:29am UTC](https://forum.polkadot.network/t/ensuring-jam-development-sustainability-is-it-time-for-a-dedicated-jam-bounty-program/16229 "2026-05-04T05:29:40Z")
Introduction The JAM initiative represents one of the most ambitious undertakings in the Polkadot ecosystem. Many independent teams have invested over a year of work into implementing clients, tooling, and research based… --- ## [DoomJAM demo on MacOS (Docker startup)](https://forum.polkadot.network/t/doomjam-demo-on-macos-docker-startup/17477)
**Author:** [@Johnny1110](https://forum.polkadot.network/u/Johnny1110)\ **Replies:** 0\ **Last updated:** [April 9, 2026, 5:37pm UTC](https://forum.polkadot.network/t/doomjam-demo-on-macos-docker-startup/17477 "2026-04-09T17:37:24Z")
For some reason, parity polkajam-releases can not run on MacOS normally. Here is a solution (with docker) for MacOS user who want to try DOOM-JAM demo on your PC. HACKMD: https://hackmd.io/@J16Oa6j\_QoOUC2\_RvaSekQ/Bkjas… --- ## [Open Spec as JAM is becoming the New Sovereignty of Technology](https://forum.polkadot.network/t/open-spec-as-jam-is-becoming-the-new-sovereignty-of-technology/14110)
**Author:** [@Lollipop\_Bulders](https://forum.polkadot.network/u/Lollipop_Bulders)\ **Replies:** 0\ **Last updated:** [July 29, 2025, 9:50am UTC](https://forum.polkadot.network/t/open-spec-as-jam-is-becoming-the-new-sovereignty-of-technology/14110 "2025-07-29T09:50:28Z")
A New Paradigm for Techno-Political Autonomy in 21st century Part 1: How can we balance strategic autonomy in technological sovereignty with collaborative innovation? Today, let’s explore a transformative idea: Open … --- ## [Clarification Request – Coretime Economics vs. Current Parachain Core Leasing](https://forum.polkadot.network/t/clarification-request-coretime-economics-vs-current-parachain-core-leasing/13048)
**Author:** [@D0tSama](https://forum.polkadot.network/u/D0tSama)\ **Replies:** 2\ **Last updated:** [May 27, 2025, 9:54pm UTC](https://forum.polkadot.network/t/clarification-request-coretime-economics-vs-current-parachain-core-leasing/13048 "2025-05-27T21:54:02Z")
Hi team, I’m exploring the economics of JAM and Coretime, especially how DOT demand might scale when chains like Mythos (FIFA Rivals, Pudgy Party) move into the JAM model. I’m trying to reconcile two things: Current P… --- ## [JAM China Academy (Educational Roadshow)](https://forum.polkadot.network/t/jam-china-academy-educational-roadshow/12719)
**Author:** [@Lollipop\_Bulders](https://forum.polkadot.network/u/Lollipop_Bulders)\ **Replies:** 0\ **Last updated:** [April 28, 2025, 8:20am UTC](https://forum.polkadot.network/t/jam-china-academy-educational-roadshow/12719 "2025-04-28T08:20:07Z")
We are excited to introduce to the Polkadot community an initiative that will open new frontiers for a brilliant technical solution - JAM - by actively expanding into the Chinese-speaking world. When the JAM Gray Paper w… --- ## [JAM Gray Paper DRAFT 0.6.4 Release in Mandarin: Fueling Adoption and Developer Growth](https://forum.polkadot.network/t/jam-gray-paper-draft-0-6-4-release-in-mandarin-fueling-adoption-and-developer-growth/12350)
**Author:** [@Lollipop\_Bulders](https://forum.polkadot.network/u/Lollipop_Bulders)\ **Replies:** 0\ **Last updated:** [April 2, 2025, 10:24am UTC](https://forum.polkadot.network/t/jam-gray-paper-draft-0-6-4-release-in-mandarin-fueling-adoption-and-developer-growth/12350 "2025-04-02T10:24:11Z")
The Lollipop team is pleased to announce the release of the Chinese translation of the JAM Gray Paper DRAFT 0.6.4, translated by Qinwen Wang, Founder & CEO of Lollipop: With the JAM Chinese version, we aim to make this… --- ## [JAM0 - JAM Implementers Meetup @ sub0/Devcon 7 - Bangkok (Nov 11-Nov 16, 2024)](https://forum.polkadot.network/t/jam0-jam-implementers-meetup-sub0-devcon-7-bangkok-nov-11-nov-16-2024/10866)
**Author:** [@sourabhniyogi](https://forum.polkadot.network/u/sourabhniyogi)\ **Replies:** 1\ **Last updated:** [November 19, 2024, 3:16pm UTC](https://forum.polkadot.network/t/jam0-jam-implementers-meetup-sub0-devcon-7-bangkok-nov-11-nov-16-2024/10866 "2024-11-19T15:16:02Z")
13 JAM Implementation teams composed of 35+ people got together during sub0/Devcon 7 for a fun-filled week of JAM: (schedule) Colorful Notion / JAM DUNA (sponsor of the venue+food, organizer :sweat\_smile:- Sourabh, …