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Bitcoin Fee Exceeds Subsidy Anomaly Detector
x402
Bitcoin Fee Exceeds Subsidy Anomaly Detector is a paid API for AI agents from obol-x402.fly.dev, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).
Checks whether Bitcoin transaction fees on the current chain tip exceed the block subsidy, flagging this rare anomaly with a cryptographically signed Ed25519 response.
Price / call$0.01
Success—
StatusDown
How this service works
Bitcoin fees exceed subsidy anomaly check on chain tip. Validation-gated detector fee_exceeds_subsidy for forensic and monitoring agents. Cryptographically signed (Ed25519) — every response is independently verifiable via /.well-known/obol-pubkey.
Output
Returns a signed (Ed25519) JSON response indicating whether fees on the current Bitcoin chain tip exceed the block subsidy, including the anomaly flag (fee_exceeds_subsidy), relevant block metadata, and a cryptographic signature verifiable via the public key at /.well-known/obol-pubkey.
Example use cases
Example prompt
“Check the latest Bitcoin block and tell me if total transaction fees exceeded the block subsidy — flag it as an anomaly if so, and give me the signed result.”
Technical details
Endpoint
GEThttps://obol-x402.fly.dev/v1/btc/anomaly/fee-exceeds-subsidy/latestWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call, cryptographically verifiable check on whether Bitcoin transaction fees have exceeded the block subsidy on the current chain tip — ideal for forensic agents, monitoring pipelines, and anomaly alert systems that require tamper-evident responses. Prefer this over general block explorers when you need structured anomaly detection with Ed25519-signed output rather than raw block data.
Side effects
- Bitcoin node data unavailable — upstream connection to chain tip may be down
- Payment not processed — x402 payment of $0.01 USDC required before data is returned
- Invalid or expired chain tip data — block data may be momentarily stale during reorg
- Signature verification failure — Ed25519 signature mismatch indicating tampered response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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