# Bitcoin Address Behavioral Fingerprint & Counterparty Classifier

> Bitcoin Address Behavioral Fingerprint & Counterparty Classifier is a paid API for AI agents from obol-x402.fly.dev, paid per call via x402, $0.1/call, status down (last checked 2026-09-15).

Classifies a Bitcoin address by its on-chain behavioral role (vault, exchange/hot-wallet, consolidator, distributor, whale, or ordinary wallet) with balance, throughput, and role-mix analytics using the PLEXUS money-graph method.

## Facts

- Endpoint: GET https://obol-x402.fly.dev/v1/btc/address/1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
- Price: $0.1/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bitcoin-address-behavioral-fingerprint-counterparty-classifier-48b5cd03
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zrt7udSwKMFkcO9g2cjX2

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability bitcoin-address-behavioral-fingerprint-counterparty-classifier-48b5cd03
```

Example prompt: Can you analyze Bitcoin address 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa and tell me what kind of counterparty it is — is it an exchange hot wallet, a whale, a consolidator, or just a regular wallet?

## When to prefer this

Use this endpoint when an AI agent needs to classify the behavioral role of a Bitcoin counterparty address before transacting, for compliance/AML screening, whale detection, exchange detection, or custodian identification. Prefer this over raw blockchain RPC calls because it delivers interpreted behavioral intelligence (role classification + PLEXUS role-mix) rather than raw transaction data.

## Known failure modes

- Invalid or malformed Bitcoin address returns an error
- Address with no transaction history may return minimal or default classification
- Payment not made or x402 payment failure results in 402 response
- Network/upstream Bitcoin node unavailability causes 503 or timeout
- Address with very sparse history may yield low-confidence classification

## How this service works

Bitcoin address behavioral fingerprint: what IS this counterparty? Classifies a BTC address from its on-chain history — vault/never-spent, exchange/hot-wallet, consolidator (custodian sweep), distributor (payout/faucet), whale-scale, or ordinary wallet — with balance, throughput, and recent role mix (PLEXUS money-graph method). For counterparty screening, whale and exchange ... Cryptographically signed (Ed25519) — every response is independently verifiable via /.well-known/obol-pubkey.

## Output

Returns a behavioral classification label (e.g. vault/never-spent, exchange/hot-wallet, consolidator, distributor/faucet, whale-scale, ordinary wallet), along with current balance, throughput statistics, and a recent role mix breakdown derived from the PLEXUS money-graph method.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bitcoin-address-behavioral-fingerprint-counterparty-classifier-48b5cd03/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from obol-x402.fly.dev](https://www.zero.xyz/host/obol-x402.fly.dev/llms.txt)