Chain Burn
Last updated
Fetch every subnet's live registration/burn cost in one response, ranked cheapest-first (#9399). Every subnet's live registration/burn cost in ONE response, ranked cheapest-first (#9399). The cross-subnet companion to /subnets/{netuid}/burn, which answers the same question one subnet at a time — 129 requests to compare them all. Served from a single chain read: Burn is an Identity-hashed map, so every key is derivable from its netuid and state_queryStorageAt returns them together. 120s KV cache, matching the per-subnet route (burn moves within minutes during registration bursts). A subnet whose burn is a genuine 0 is included, not dropped. subnet_count is what the chain reports exists (TotalNetworks) and read_count is how many were actually read — a gap between them means the read was partial. NOTE: there is no separate validator-permit price; permits are granted by the StakeThreshold, not purchased.
Response Body
application/json
application/json
application/json
application/json
application/json
curl -X GET "https://example.com/api/v1/chain/burn"{ "data": { "cheapest_burn_tao": 0.5, "dearest_burn_tao": 0.5, "field_sources": { "example": { "kind": "measured", "storage": "example" } }, "median_burn_tao": 0.5, "queried_at": "2026-06-01T00:00:00.000Z", "read_count": 1, "schema_version": 1, "subnet_count": 1, "subnets": [ { "burn_tao": 0.5, "netuid": 7 } ] }, "meta": { "artifact_path": "example", "cache": "short", "contract_version": "2026-06-29.1", "generated_at": "2026-06-01T00:00:00.000Z", "pagination": { "collection": "example", "cursor": 1, "limit": 1, "next_cursor": 1, "order": "asc", "returned": 1, "sort": "example", "total": 1 }, "published_at": "2026-06-01T00:00:00.000Z", "source": "live-cron-prober", "stale_contract": { "built_under": "example", "live": "example" } }, "ok": true, "schema_version": 1}