Real working cryptographic microservice that issues, rotates, signs with, verifies, and revokes short-lived ephemeral session keys (secp256k1 EVM, Ed25519, HMAC-SHA256) with verifiable rotation chain attestation.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.05 USDC | 0x0151...cc49 |