For exchanges, DeFi protocols, custody providers, and crypto wallets

    You're not Web3 if when AWS goes down,
    your app does too.

    S3-compatible object storage built on Filecoin. Cryptographic integrity verification per object. No single-provider lock-in. Walk the walk.

    Start for freeTalk to an expert

    No credit card required · Filecoin-backed · S3-compatible

    Decentralized products built on centralized infrastructure are a liability.

    Exchanges, custody providers, and DeFi protocols store user assets, audit logs, and transaction history on AWS S3. When AWS has an incident, so does the protocol. That is not a Web3 architecture.

    The single-point failure

    AWS us-east-1 going down takes your protocol with it.

    If your exchange order book, custody audit trail, or DeFi state is stored in a single cloud region, you have a single point of failure. Your smart contracts are decentralized. Your data layer is not.

    The trust mismatch

    Your users are trusting a chain. Your data trusts a corporation.

    Blockchain-native users hold self-custody wallets and verify everything on-chain. Their trust in your protocol assumes the same verifiability applies to the underlying data store. A proprietary cloud does not provide that.

    The audit gap

    Regulated crypto needs verifiable data, not just cloud SLAs.

    Exchanges and custody providers operating under MiCA, BitLicense, or similar frameworks need data provenance that an AWS SLA does not provide. Cryptographic per-object verification is the audit trail regulators are starting to ask for.

    Same S3 API. Filecoin underneath.

    Your existing exchange backend, custody pipeline, or DeFi indexer connects with an endpoint change. Every object written gets a CID and is verified via Proof of Spacetime — continuously, on-chain.

    custody_audit.py
    import boto3, os

# Drop-in replacement for AWS S3 —
# backed by Filecoin, not a hyperscaler data centre
s3 = boto3.client(
    "s3",
    endpoint_url="https://eu-west-1.s3.fil.one",
    aws_access_key_id=os.environ["FIL_ACCESS_KEY"],
    aws_secret_access_key=os.environ["FIL_SECRET_KEY"],
    region_name="eu-west-1",
)

# Store custody audit logs — CID issued on write,
# verified via Proof of Spacetime every ~24 h
s3.put_object(
    Bucket="custody-audit",
    Key=f"logs/{wallet_address}/{block_height}.json",
    Body=audit_record,
    ContentType="application/json",
)

# Read back for compliance — $0 egress
obj = s3.get_object(
    Bucket="custody-audit",
    Key=f"logs/{wallet_address}/{block_height}.json",
)

    CID per object

    Every stored object receives a content identifier (CID). The CID is a cryptographic fingerprint of the data — change a single byte and the CID no longer matches.

    Proof of Spacetime verification

    Filecoin's Proof of Spacetime confirms storage providers are continuously holding the data as committed. This runs approximately every 24 hours, automatically.

    No single-provider dependency

    Data is distributed across an independent network of Filecoin storage providers. There is no AWS region, no single data centre, and no hyperscaler failure mode to inherit.

    11 nines durability

    Designed for 11 nines. Loss is a detectable event — not a silent failure — because the proof system requires it.

    Infrastructure that matches your values.

    Cryptographic integrity per object

    Every stored object receives a CID and is verified against it via Filecoin Proof of Spacetime approximately every 24 hours. Data cannot silently corrupt or disappear without on-chain detection.

    No single-provider lock-in

    Data is distributed across an independent network of Filecoin storage providers — not a single data centre or cloud region. No AWS failure mode reaches the storage layer.

    S3-compatible — no SDK changes

    Your existing boto3, aws-sdk, or S3-compatible tooling connects with an endpoint change. Exchange backends, wallet data pipelines, and DeFi indexers work without modification.

    Flat, predictable cost

    $4.99/TB flat. No egress fees on reads, no per-request charges. High-volume on-chain event indexing and custody audit logs don't generate surprise invoices.

    One rate. $4.99/TB/month.

    Storage. That is the whole bill. No egress on compliance reads, no per-request fees on audit queries. Predictable cost for unpredictable on-chain activity.

    Start for freeTalk to an expert

    No credit card required · Filecoin-backed · S3-compatible

    Walk the walk.

    Free 1 TB evaluation. Connect your existing S3 client and store data on Filecoin-backed infrastructure in minutes.

    Start for freeTalk to an expert

    No credit card required · Filecoin-backed · S3-compatible