Benchmark code and data for "Tamper-Evident Security Telemetry for IoT, Edge and Cloud: A Survey of Blockchain- and Merkle-Anchored Logging, Alerting and Auditing"

Solidity contract, Python scripts and raw results for the quantitative tutorial (Section VII) of the survey: on-chain gas cost of six anchoring strategies (per-record events and storage, batch roots in storage or events, sequence-checked chained roots, leaves in calldata), Merkle proof verification gas, exposure window and gas per record for count-, time- and hybrid-triggered batching under Poisson arrivals, local costs of hash chains, forward-secure HMACs, Merkle trees and signatures, and signing costs of Ed25519, ML-DSA (FIPS 204) and SLH-DSA (FIPS 205) for batch roots. Measured on a local Ethereum virtual machine (py-evm/eth-tester, Solidity 0.8.24) and Python 3.13.