NEAR chain signatures move into Intel TDX: the old-shard problem it fixes
All 17 NEAR chain signature signers now run inside Intel TDX. Because the keys never change, old epoch shards could rebuild them; TDX hides shards and requires onchain attestation. Physical attacks, pre-TEE epochs and quantum remain open, with Intents at $4.8B in September.
Every operator who ever left NEAR's chain signatures MPC network could have kept a piece of the keys that still move >$4B a month.
That's changed as NEAR confirmed this week that all 17 signers (Bitwise, Nansen, Everstake and co) run inside Intel TDX.
A key upgrade to the MPC-based signing layer NEAR Intents runs on.
How was it possible before?
The keys can never change, because every address the network controls is derived from them. So each reshuffle of operators (an "epoch") hands out fresh shards of the same key. Enough shards from the same epoch still rebuild it, even years later.
The signer contract is already on epoch 14. That means quite a few old shards sitting with people that might no longer run a node.
The design doc from Near One (NEAR's core engineering team, also one of the 17 operators) lists exactly this as the first reason for the TDX move.
Inside TDX nobody ever sees their shard in plain text. On top, every node has to post a hardware proof onchain that it runs the code the others voted in, or it doesn't get to sign. 11 of 17 still have to sign to move any assets.
What it doesn't fix?
- Physical attacks: TEE(.)fail pulled keys out of TDX with <$1k of hardware last year. An operator willing to tamper with its own server could still extract its shard, which is why the 11 of 17 threshold still matters
- Old epochs: TDX protects shards from the switch onward. If the keys were carried over from the pre-TEE era instead of regenerated, those old shards still count
- Quantum: threshold signing isn't post-quantum yet, Near One says 1y+ out
Why this matters for NEAR?
Intents just had its best month ever ($4.8B in Sep), and agent wallets like @out_layer now derive their keys from the same network. The more value sits behind these keys, the more it matters who could ever rebuild them.
Underrated upgrade imo.
Bullish on NEAR.
3 images on X
How the call played out · since 25 Oct 2026
Prices as of 25 Oct 2026This piece takes a view on $NEAR, so that move is read against the call.
Moving every chain signature signer into Intel TDX closes the old-shard risk behind more than $4B a month of NEAR Intents flow.
- At publication
- $4.53
- Now
- $4.53
- vs BTC
- 0.0%
No follow-up pieces on this subject yet. This is the latest take.
Daily closes in USD from DefiLlama and Yahoo Finance. Only a bullish or bearish call in a thesis or market take is tracked; explainers, lists, maps and mentions are neutral context. Not financial advice.
Research, advisory and builds for breakout teams shipping real tech.