Cryptocurrency — entry 010 of 53
SoChain
Block.io's original wallet API has been fully folded into SoChain, the company's current product — both docs.block.io and block.io/api now redirect straight to chain.so, whose site footer still credits "Block.io, Inc." SoChain's v3 API serves Bitcoin, Dogecoin, and Litecoin (plus their testnets) with fast JSON responses for balances, transactions, and address data, and requires an API-KEY header on every call. There's no free tier: plans start at $149/month for 5,000 requests/day and scale to $1,999/month for 500,000/day.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSDisabledBrowser calls need a server-side proxy.
PricingPaidSubscription required — no meaningful free tier.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score67
Authentication15/25API key required
Pricing9/20Paid API
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/block/"><img src="https://greatapis.com/badge/block.svg" alt="Scored 67 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.