CryptoLabel

Developer API

Blockchain Address Labeling API

Enrich Bitcoin, Ethereum, and Tron addresses with normalized entity and label data through one free public endpoint. No API key or account is required.

Test a live requestRead the reference

One endpoint

From an opaque address to inspectable context

Select a supported chain and submit a public address. The API validates the chain-specific format and returns the same top-level model for every network.

Unknown attribution remains explicit instead of being converted into a confident identity or risk conclusion. 

curl --request GET \
  --url https://cryptolabel.io/api/v1/address/ethereum/0x22af984f13DFB5C80145E3F9eE1050Ae5a5FB651 \
  --header 'Accept: application/json' \
  --header 'User-Agent: YourAppName/1.0 (contact@example.com)'

Response fields

A stable model across supported chains

query
The normalized chain and requested public address.
address
Address type, blockchain model, value, and explorer URL.
entity
A normalized presentation name and entity category when known.
labels
Zero or more roles with category, source, method, and status metadata.

Attribution metadata

Inspect the label, not an opaque score

Label objects expose their readable role together with source type, detection method, and lifecycle status. Applications can display those distinctions instead of flattening every attribution into a single verdict.

Review every field and enum 
{
  "query": {
    "chain": "ethereum",
    "address": "0x22af984f13DFB5C80145E3F9eE1050Ae5a5FB651"
  },
  "address": {
    "type": "eoa",
    "model": "account_based"
  },
  "entity": {
    "name": "Kraken",
    "category": "exchange"
  },
  "labels": [
    {
      "type": "exchange_cold_wallet",
      "sourceType": "public",
      "method": "aggregation",
      "status": "active"
    }
  ]
}

Integration uses

Built for repeated address enrichment

  1. 01

    Add readable attribution to explorer and address detail pages.

  2. 02

    Enrich internal datasets with one normalized multi-chain response.

  3. 03

    Review known entity and label categories without parsing explorer pages.

  4. 04

    Give developer tools and AI agents structured address context.

Network coverage

Chain-specific validation, shared output

Clear boundaries

CryptoLabel does not provide balances, transaction history, guaranteed natural-person identification, or an AML verdict. Attribution can be incomplete, delayed, or change as public information evolves.