# USDC & EURC Issuance History

> USDC & EURC Issuance History is a paid API for AI agents from www.blockchainiq.co, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Returns daily end-of-day supply, mints, burns, and net issuance for USDC or EURC on a single chain (Ethereum, Base, or Arbitrum) for up to 365 days, with CCTP/Gateway/other minter breakdowns and blacklist/control events.

## Facts

- Endpoint: GET https://www.blockchainiq.co/api/x402/v1/stablecoins/history?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/usdc-eurc-issuance-history-3fb9badc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tpxA6jz3CZ58pKhLddoPr

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 usdc-eurc-issuance-history-3fb9badc
```

Example prompt: Pull me 90 days of USDC issuance history on Ethereum — I want to see daily end-of-day supply, mints, burns, and the CCTP vs Gateway breakdown from Blockchain IQ.

## When to prefer this

Choose this endpoint when you need granular daily stablecoin supply and issuance data for a specific chain over a historical window, with mint/burn reconciliation and minter-type breakdowns (CCTP vs Gateway). Prefer it over generic market data APIs when you need Circle-native issuance accounting, blacklist/control event history, or cross-chain flow analysis at the daily level for USDC or EURC specifically.

## Known failure modes

- Invalid chain value returns an error (must be ethereum, base, or arbitrum)
- Invalid token value returns an error (must be USDC or EURC)
- days parameter outside 1-365 range returns a validation error
- Payment failure (insufficient USDC balance) results in a 402 response
- Data gaps are reported as missing days, not zero-filled entries

## How this service works

Daily Circle USDC or EURC history for one chain (Ethereum, Base, Arbitrum), up to 365 days: end-of-day supply, mints, burns, net issuance split CCTP / Gateway / other minters, control events and blacklist changes. Every day reconciles exactly (supply change = mints - burns); missing days are listed, never zero-filled. Use to chart stablecoin issuance and cross-chain flows. JSON, no API key. $0.01 per call. Blockchain IQ.

## Output

A JSON array of daily records (up to 365 entries) for the requested token and chain, each containing end-of-day supply, mints, burns, net issuance, and sub-breakdowns by minter type (CCTP, Gateway, other). Control events and blacklist changes are included per day. A separate list enumerates any missing days (never zero-filled). Every day satisfies the reconciliation identity: supply change = mints - burns.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "days": {
       "type": "integer",
       "default": 30,
       "maximum": 365,
       "minimum": 1
      },
      "chain": {
       "enum": [
        "ethereum",
        "base",
        "arbitrum"
       ],
       "type": "string",
       "default": "ethereum"
      },
      "token": {
       "enum": [
        "USDC",
        "EURC"
       ],
       "type": "string",
       "default": "USDC"
      }
     }
    }
   },
   "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/usdc-eurc-issuance-history-3fb9badc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.blockchainiq.co](https://www.zero.xyz/host/www.blockchainiq.co/llms.txt)