# 5 Sources of Nondeterminism That Can Break Decentralized Verification

DevFeed: [5 Sources of Nondeterminism That Can Break Decentralized Verification](<https://devfeed.tech/articles/5-sources-of-nondeterminism-that-can-break-decentralized-verification-65268.md>)

Original publisher: [Read original article](<https://hackernoon.com/5-sources-of-nondeterminism-that-can-break-decentralized-verification?source=rss>)

Author: Cody

Published: 2026-10-05T16:11:01Z

Content type: tutorial

Language: en

Sources: [HackerNoon](<https://devfeed.tech/sources/hackernoon.md>)

Topics: [decentralized-web](<https://devfeed.tech/topics/decentralized-web.md>), [Formal verification](<https://devfeed.tech/topics/formal-verification.md>), [return](<https://devfeed.tech/topics/return.md>), [proof of work](<https://devfeed.tech/topics/proof-of-work.md>)

Tags: [batching](<https://devfeed.tech/tags/batching.md>), [bittensor](<https://devfeed.tech/tags/bittensor.md>), [bittensor-subnets](<https://devfeed.tech/tags/bittensor-subnets.md>), [blockchain](<https://devfeed.tech/tags/blockchain.md>), [clocks](<https://devfeed.tech/tags/clocks.md>), [compute](<https://devfeed.tech/tags/compute.md>), [consensus](<https://devfeed.tech/tags/consensus.md>), [constraint](<https://devfeed.tech/tags/constraint.md>), [decentralized](<https://devfeed.tech/tags/decentralized.md>), [decentralized-verification](<https://devfeed.tech/tags/decentralized-verification.md>), [deterministic-consensus](<https://devfeed.tech/tags/deterministic-consensus.md>), [distributed-systems](<https://devfeed.tech/tags/distributed-systems.md>), [failure](<https://devfeed.tech/tags/failure.md>), [fixed](<https://devfeed.tech/tags/fixed.md>), [floating-point](<https://devfeed.tech/tags/floating-point.md>), [floating-point-determinism](<https://devfeed.tech/tags/floating-point-determinism.md>), [flow](<https://devfeed.tech/tags/flow.md>), [llm](<https://devfeed.tech/tags/llm.md>), [nondeterminism](<https://devfeed.tech/tags/nondeterminism.md>), [oracle-networks](<https://devfeed.tech/tags/oracle-networks.md>), [verification](<https://devfeed.tech/tags/verification.md>), [verification-layers](<https://devfeed.tech/tags/verification-layers.md>)

## AI overview

The article explains five sources of nondeterminism that can cause decentralized verifiers to disagree: changing web content, LLM judgments, floating-point operation order, implicit handling of missing data, and local wall-clock time. It recommends anchoring content snapshots, using reproducible rules and arithmetic, failing closed on invalid inputs, and basing time-sensitive decisions on shared blockchain values.

## Source excerpt

Five sources of nondeterminism that can break decentralized verification, from live web data and LLM judges to floating-point math and local clocks.