AI connection: 151 chains. Public-data lookups on 13 so far.

151 blockchains. One evidence standard.

Blockchain knowledge you can check.

Compare blockchains side by side, learn how they work and follow sourced news, here or inside your AI assistant.

Compare two blockchains

Search by name or ticker. Choose any two.

Compare up to four

Free for every chain. No wallet keys or transactions.

Prefer your AI assistant? Connect your AI

AI connection: all 151 chains, with public-data lookups on 13 so far.

Connected ideas. Checkable knowledge.

See the evidence behind an answer.

Check the conclusion, its source and when it was reviewed. See whether the change is proposed, released or live.

What an answer carries · a real record

What changed on Ethereum, and is it live?

The Ethereum Foundation Protocol Cluster announced on October 16 that, following its October 6 activation on Sepolia, Glamsterdam was scheduled to activate on Hoodi at epoch 132352 on October 26, 2026 at 17:42:48 UTC…

Activation
Sepolia confirmed hoodi scheduled mainnet undecided
Source
Ethereum Foundation — Glamsterdam Hoodi Testnet Announcement (external site)
Reviewed
Reviewed Oct 18, 2026 Next review due Oct 28, 2026, 12:00 UTC.

Full record, with dates and all 6 sources

The newest reviewed development. How this example is chosen

For teams

Bring sourced blockchain answers to your users.

Explore a paid pilot for your help center, documentation or support assistant. We agree the scope, timing and price before work starts.

Discuss a paid pilot

The same public evidence standard applies to every chain.

  1. A reader asks"Is this upgrade live yet?"
  2. A short answerWith the stage the evidence supports.
  3. CheckableSource and review date, or "not established".

The same standard for every chain.

Chains are listed A to Z with the same fields and recheck deadlines. Nobody can pay for a position, kinder wording or faster corrections, and anyone can report an error for free.

  • 151chains in the catalogue
  • 13with public-data lookups today
  • 7historical networks kept as history
  • 745reviewed developments

Help fund the public service.

Help pay for hosting, source reviews and public-data connections. Individuals can donate XCH; foundations can discuss upkeep funding or a contribution to the shared fund.

Funding cannot buy preferred placement, favorable wording or a different evidence standard.

Why I built iKnow Blockchain

I built iKnow Blockchain to make blockchain claims easier to check. The project started with the Chia blockchain and grew from a simple question: what does the evidence actually support? The same published standard applies to every chain.

Jake Schmidt, founder

Read the full story →