Traditional web architecture or Web 2 operates on the HTTP protocol; a location-based addressing system where a client must connect to a specific IP address to retrieve a file. If the host server goes offline due to sanctions, filtering, or technical failure, the data becomes inaccessible and a 404 error occurs.

Transition from Location-based to Content-based Addressing

In the decentralized storage model, the approach shifts to content-based addressing. The InterPlanetary File System protocol or IPFS instead of asking "Where is this file?", asks "What file is desired?". Every file uploaded to the network is hashed using cryptographic algorithms and receives a unique identifier called a Content Identifier, or CID for short.

Fault Tolerance and Censorship Resistance

When a file is hashed based on its hash, the slightest change in its bytes will result in the production of a completely different CID; therefore, forging or tampering with files without being exposed is impossible. Furthermore, traffic load is distributed among multiple nodes, and there is no longer a single point of failure to shut down the entire network.

The IPFS protocol is merely a peer-to-peer (P2P) sharing layer and lacks an internal economic incentive to ensure the permanent maintenance of files by nodes. To address this challenge, storage-specific blockchains have emerged, connecting space providers and users through smart contracts.

Filecoin and Continuous Cryptographic Proofs

The Filecoin network, with its native cryptocurrency FIL, has created a model similar to a free market for hard drive rental. To prove honest data retention, storage miners must frequently provide two mathematical proofs: Proof of Replication (PoRep), which proves an independent physical copy of the stored data exists, and Proof of Spacetime (PoSt), which demonstrates that the data has been maintained without tampering throughout the entire contract period.

Arweave and the "Pay Once, Store Forever" Algorithm

On the other hand, the Arweave project, with its AR token and Blockweave data architecture, has implemented a permanent storage model. The user pays the storage fee only once, and the file is guaranteed maintenance for at least 200 years. Arweave utilizes a Proof of Access mechanism and uses the investment returns from fees in an endowment pool to fund the costs of miners over decades.

Technical and Structural Comparison of Centralized and Decentralized Infrastructures

To understand the economic difference, consider a real-world scenario: storing one terabyte (1 TB) of data on Amazon S3 Standard service costs about $23 per month, which amounts to $276 per year, and this figure will continue for years. In contrast, the cost of renting 1 terabyte on the Filecoin network is less than $2 per year with many providers, although its transfer and retrieval may involve different technical complexities.

Functional Bridges to Web3 Storage

Developers do not need to run a full node to use this infrastructure and can use data management gateways (Pinning Services):

• Pinata: A popular tool for pinning data and NFT files directly on the IPFS network, along with support for dedicated gateways.
• Web3.Storage: An optimized service for developers based on Filecoin with simple APIs and rapid integration.
• Bundlr Network (Irys): A scalability and fast payment layer using cryptocurrencies like ETH or MATIC for uploading data to Arweave.

Challenges Facing Distributed Systems

Despite numerous advantages, decentralized storage is not without flaws. Data retrieval speed is lower compared to centralized Content Delivery Networks (such as Cloudflare CDN). Additionally, the complexity of managing dynamic data that changes frequently, and the issue of malicious or illegal content—where direct deletion from the protocol level is not possible—are among the issues for which these networks are still developing optimal solutions.