UTXO metric

Spent Share 30d 1y API

Spent prevout value aged at least 4,320 but less than 52,560 blocks (approximately 30 days to one year) divided by total spent prevout value in each closed interval, multiplied by 100. Unit: percent.

Use GET /v1/metrics/utxo/spent_share_30d_1y with X-API-Key authentication, a=BTC, i=10m or 1h or 1d, and optional UTC millisecond bounds.