Infrastructure · Review
InactiveColdStack Review 2026: Decentralized Storage, Now Closed
ColdStack was a decentralized cloud-storage service that put an S3-compatible interface over storage networks such as Filecoin, Arweave, Sia and Crust. It has closed, so new users cannot use the service.
By the DappsAtlas editorial team · Updated
DappsAtlas score
—/10
Not rated
Our verdict on Coldstack
ColdStack aimed to simplify decentralized storage by offering an S3-compatible gateway to networks such as Filecoin, Arweave, Sia and Crust. That familiar interface and multi-network approach were its main strengths. The decisive caveat is that ColdStack has closed, so it is not an option for new storage needs. Former users should confirm the status of their data and accounts directly; the project has not published a detailed transition plan.
Score breakdown
How Coldstack scores
- Security
- n/a
- Ease of use
- n/a
- Fees
- n/a
- Features
- n/a
Scores run from 0 to 10 and are based only on facts we could verify. Where information was missing we mark the score n/a rather than guess.
What is Coldstack?
ColdStack was a decentralized cloud-storage project intended to make Web3 storage easier to use through an S3-compatible interface. It connected users with storage networks including Filecoin, Arweave, Sia and Crust.
The project has closed after five years of operation, according to its website. New users cannot access the service. ColdStack invites people with questions or outstanding matters to contact the team, but does not explain how existing data or accounts are handled.
How Coldstack works
ColdStack was designed to place an S3-compatible interface between users and decentralized storage networks. S3 compatibility lets applications use familiar cloud-storage operations instead of integrating separately with each network.
The service connected to networks such as Filecoin, Arweave, Sia and Crust. ColdStack is now closed, so this interface and aggregation service are no longer available to new users.
2 features
Key features
01
S3-compatible interface
ColdStack provided an interface compatible with the S3 cloud-storage API, familiar to users of conventional cloud services.
02
Multi-network storage
The service was designed to connect users to multiple decentralized storage networks, including Filecoin, Arweave, Sia and Crust.
Pros and cons
What we like
- Its S3-compatible interface was designed to work with familiar cloud-storage workflows.
- It aimed to provide access to multiple decentralized storage networks through one service.
- The project’s website still invites users with outstanding matters to get in touch.
Watch out for
- ColdStack has closed, so its storage service is no longer available.
- The project does not publish a shutdown date or details about how existing user data is handled.
- Fees, team details and current support arrangements are not published.
- The available audit listing does not specify audit scope, findings or whether issues were resolved.
Coldstack fees
ColdStack's fees are not published. The service has closed, so users cannot sign up to check pricing or use its storage interface.
Is Coldstack safe?
ColdStack has closed, so it should not be treated as an active storage provider. The project does not publish details about what happens to previously stored data or accounts; former users should seek clarification directly and check for independent copies of important files.
A search listing refers to ColdStack audits by Hacken, but the audit scope, findings and remediation status are not specified here. No licensing or regulatory status is published. The CLS token is a separate crypto asset and carries its own market and custody risks.
4 steps
How to get started with Coldstack
- 1
Do not expect to create a new ColdStack account or start a storage workflow; the project says it has closed.
- 2
If you previously used the service, identify any outstanding storage or account questions.
- 3
Contact ColdStack through its official website about unresolved matters.
- 4
Confirm directly with the relevant storage network or provider whether you have a separate account or data-access option.
Who Coldstack is for
ColdStack may be relevant to former users checking on accounts, data or other outstanding matters. It is not suitable for people seeking a storage provider now, because the project has closed.
Coldstack FAQs
Is ColdStack still operating?
No. ColdStack's website says the project has closed. It invites people with outstanding matters to contact the team, but does not describe ongoing storage access.
What did ColdStack do?
ColdStack offered an S3-compatible layer for decentralized storage networks, including Filecoin, Arweave, Sia and Crust. It was intended to let users work with those networks through a familiar cloud-storage interface.
What happened to data stored through ColdStack?
The project does not publish details about data migration or ongoing access after closure. If you have an account or outstanding matter, contact ColdStack through its official site.
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How we checked
Sources
No public sources were recorded for this review.
Last updated . Spotted an error? Tell us and we will correct it.