6 Eras of
Decentralized Storage Innovation

Xandeum is on a mission to build a scalable storage layer for Solana programs, unlocking new possibilities for developers and users alike. Our ambitious roadmap for 2025 outlines six key eras that will guide our development and bring our vision to life:

The DeepSouth Era is Xandeum's starting point for building a decentralized storage layer. In this era, the first version of XandMiner, the XandMiner Daemon dubbed XandMinerD will be released, allowing users to create key pairs, register their pNodes, and create and destroy file systems on their pNode. These basic functions provide everything needed to begin operating a pNode and get a headstart through first mover advantage in the scalable storage layer.

Era Goals	Milestone	Version	Milestone Goals	sedApp API	Paging	Redundancy	Pods BFT	find/grep	Fee Markets	XandMiner
Get Started	Constance	0.1	Start pNode Network	None	No	No	Centralized	No	None	Register
	Freiburg	0.2	Create / Destroy File Systems	Mgmt Only	No	No	Centralized	No	None	Drive Allocation

The South era delivers a complete working prototype of the Xandeum solution. It starts with an architecture spike, a journey through all layers of the architecture to provide a proof of concept. This era rapidly implements the full API for storage-enabled dApps, allowing developers to utilize the scalable storage layer through a file system model. Basic search functionalities, pNode rewards, redundancy, and paging are also included. In essence, the South era provides a comprehensive and functional Xandeum prototype.

Era Goals	Milestone	Version	Milestone Goals	sedApp API	Paging	Redundancy	Pods BFT	find/grep	Fee Markets	XandMiner
Working Prototype	Munich	0.3	Working Prototype	Full	Yes	No	Centralized	No	None	Basic Stats
	Herrenberg	0.4	Crude Search	Full	Yes	No	Centralized	Simple	None	Basic Stats
	Ingolstadt	0.5	Basic pNode Rewards	Full	Yes	No	Centralized	Simple	None	Basic Rewards
	Stuttgart	0.6	Redundancy	Full	Yes	Yes	Centralized	Simple	None	Basic Rewards
	Heidelberg	0.7	Paging Stats	Full	Yes	Yes	Centralized	Simple	None	Paging Stats
	Reinheim	0.8	Better Search	Full	Yes	Yes	Centralized	Accelerated	None	Paging Stats
	Bamberg	0.9	Redundancy Stats	Full	Yes	Yes	Centralized	Accelerated	None	Redundancy Stats

The Main era, named after the German river Main, marks the launch of Xandeum's Minimum Viable Product (MVP). This means that in the Main era, Xandeum is ready for real-world use by storage-enabled decentralized applications (sedApps). Our demo app, info.wiki, a fully decentralized version of Wikipedia, will be launched during this era. The Main era's MVP will also feature a basic implementation of Byzantine Fault Tolerance (BFT) and trust anchoring to the Solana blockchain, ensuring a secure and reliable storage solution for real-world applications.

Era Goals	Milestone	Version	Milestone Goals	sedApp API	Paging	Redundancy	Pods BFT	find/grep	Fee Markets	XandMiner
Support Early sedApps	Frankfurt	1	MVP (supporting info.wiki)	Full	Yes	Yes	Centralized	Accelerated	None	Redundancy Stats
	Olef	1.1	Repair Pages	Full	Yes	Yes	Centralized	Accelerated	None	Repair Stats
	Bonn	1.2	Evict & Replace	Full	Yes	Yes	Centralized	Accelerated	None	Eviction Warnings
	Cologne	1.3	Simple BFT	Full	Yes	Yes	Pre-HotStuff	Accelerated	None	BFT Stats
	Erfurt	1.4	Initial Trust Anchors	Full	Yes	Yes	Pre-HotStuff	Accelerated	None	Merkle Stats

The Central era marks a significant leap forward for Xandeum. By implementing full Byzantine Fault Tolerance (BFT) for pNodes, using cutting-edge technology like the HotStuff BFT mechanism, Xandeum achieves blockchain-grade qualities for its storage layer. This effectively extends the Solana blockchain's functionality, making Xandeum's storage an on-chain solution. The Central era represents a major technological advancement and one of the most exciting phases in Xandeum's development.

Era Goals	Milestone	Version	Milestone Goals	sedApp API	Paging	Redundancy	Pods BFT	find/grep	Fee Markets	XandMiner
Storage BFT	Hilden	2	Decentralized Atlas	Full	Yes	Yes	HotStuff 1	Accelerated	None	Dec. Atlas Stats
	Neuss	2.1	Stake-Based Leader Schedule	Full	Yes	Yes	HotStuff 1	Accelerated	None	Leader Stats
	Düsseldorf	2.2	Merkle Trust Anchors	Full	Yes	Yes	HotStuff 2	Accelerated	None	Merkle Stats
	Wuppertal	2.3	Threshold Signatures	Full	Yes	Yes	HotStuff 3	Accelerated	None	TSS Stats
	Velbert	2.4	ETH Trust Anchors	Full	Yes	Yes	HotStuff 4	Accelerated	None	ETH TA Stats
	Leipzig	2.5	Validator Challenges	Full	Yes	Yes	HotStuff 5	Accelerated	None	Challenge Stats

The Coal era, named after Germany's coal-mining region Ruhrgebiet, prepares Xandeum for production. This era focuses on refining the HotStuff-based BFT for enhanced pNode security and introduces dynamic Fee Markets based on supply and demand. Fees, paid in SOL, will adapt constantly and be shared with key stakeholders: pNode operators, validators, and stakers in Xandeum's storage-enabled liquid staking platform and, of course, the DAO which is owned collectively by all XAND holders.

Era Goals	Milestone	Version	Milestone Goals	sedApp API	Paging	Redundancy	Pods BFT	find/grep	Fee Markets	XandMiner
Fee Markets	Essen	3	Full BFT + Initial Fee Markets	Full	Yes	Yes	Full HotStuff	Accelerated	Hard Coded	Fee Section
	Bochum	3.1	Supply/Demand Observability	Full	Yes	Yes	Full HotStuff	Accelerated	Measure	S/D Stats
	Dortmund	3.2	Adaptive Fees	Full	Yes	Yes	Full HotStuff	Accelerated	Adaptive	Constraints
	Castrop-Rauxel	3.3	Tiered	Full	Yes	Yes	Full HotStuff	Accelerated	Auction Bins	Tiers, Grace
	Datteln	3.4	Basic Auctions	Full	Yes	Yes	Full HotStuff	Accelerated	Bidding	Auctions

The North era marks the culmination of Xandeum's journey, introducing advanced features for scale and performance. This includes refining the Fee Market model, implementing parallel processing and load balancing, establishing storage regions, and enabling high concurrency, global distribution, and streaming capabilities. In essence, the North era brings Xandeum to full production-grade at scale.

Era Goals	Milestone	Version	Milestone Goals	sedApp API	Paging	Redundancy	Pods BFT	find/grep	Fee Markets	XandMiner
Scale and Performance	Münster	4	Full Fee Markets + Initial Scale	Full	Yes	Yes	Full HotStuff	Accelerated	Dynamic Auctions	Auction Governance
	Berlin	4.1	Parallelization + Load Balancing	Full	Yes	Yes	Full HotStuff	Accelerated	Dynamic Auctions	Cluster Maps, Throughput
	Hamburg	4.2	Regions, High Concurrency	Full	Yes	Yes	Full HotStuff	Accelerated	Dynamic Auctions	Region Setup & Alerts
	Lübeck	4.3	Global Distri + Streaming	Full	Yes	Yes	Full HotStuff	Accelerated	Dynamic Auctions	Geo Dashb. + Adv. Diagn.
	Grömitz	4.4	Full Production-Grade Scale	Full	Yes	Yes	Full HotStuff	Accelerated	Dynamic Auctions	Tooling, Auto-Tuning

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6 Eras of Decentralized Storage Innovation

6 Eras of
Decentralized Storage Innovation