Pith Number

pith:ZP34TZYD

pith:2025:ZP34TZYDFW4BTKWISBW4376LGV

not attested not anchored not stored refs pending

How does Chain of Thought Think? Mechanistic Interpretability of Chain-of-Thought Reasoning with Sparse Autoencoding

Aske Plaat, Niki van Stein, Xi Chen

arxiv:2507.22928 v1 · 2025-07-24 · cs.CL · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZP34TZYDFW4BTKWISBW4376LGV}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

2 papers in Pith

The Tell-Tale Norm: $\ell_2$ Magnitude as a Signal for Reasoning Dynamics in Large Language Models

Characterize Then Distill: Mechanistic Reasoning in Large Output Spaces

Receipt and verification

First computed	2026-07-05T11:46:02.096466Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbf7c9e7032db819aac8906dcdffcb355a8231c9aeeb0dad33792bbcb2f74f40

Aliases

arxiv: 2507.22928 · arxiv_version: 2507.22928v1 · doi: 10.48550/arxiv.2507.22928 · pith_short_12: ZP34TZYDFW4B · pith_short_16: ZP34TZYDFW4BTKWI · pith_short_8: ZP34TZYD

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZP34TZYDFW4BTKWISBW4376LGV \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: cbf7c9e7032db819aac8906dcdffcb355a8231c9aeeb0dad33792bbcb2f74f40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cea1fc211cbd377802526c6d48f68e0729b878cd0346e30db928e546e7109da",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-07-24T10:25:46Z",
    "title_canon_sha256": "cc569f6515e502fc17e805cb5780b577b4ee36d9a3f4c437aa8754300718a51e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.22928",
    "kind": "arxiv",
    "version": 1
  }
}