Pith Number

pith:DUG2N5UN

pith:2026:DUG2N5UN4FXJG6E7OZE4HD5Y4D

not attested not anchored not stored refs pending

Scaling Monosemanticity: Extracting Interpretable Features from Claude 3 Sonnet

Adam Jermyn, Adam Pearce, Adly Templeton, Alex Tamkin, Andy Jones, Brian Chen, Callum McDougall, C. Daniel Freeman, Chris Olah, Craig Citro, Edward Rees, Emmanuel Ameisen, Esin Durmus, Francesco Mosconi, Hoagy Cunningham, Jack Lindsey, Jonathan Marcus, Joshua Batson, Monte MacDiarmid, Nicholas L Turner, Shan Carter, Theodore R. Sumers, Tom Conerly, Tom Henighan, Trenton Bricken, Tristan Hume

arxiv:2605.29358 v1 · 2026-05-28 · 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{DUG2N5UN4FXJG6E7OZE4HD5Y4D}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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.

Receipt and verification

First computed	2026-05-29T01:05:35.099638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d0da6f68de16e93789f7649c38fb8e0d1be25f4458eaa3de177436aa995b0da

Aliases

arxiv: 2605.29358 · arxiv_version: 2605.29358v1 · doi: 10.48550/arxiv.2605.29358 · pith_short_12: DUG2N5UN4FXJ · pith_short_16: DUG2N5UN4FXJG6E7 · pith_short_8: DUG2N5UN

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/DUG2N5UN4FXJG6E7OZE4HD5Y4D \
  | 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: 1d0da6f68de16e93789f7649c38fb8e0d1be25f4458eaa3de177436aa995b0da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30659655a2ac591ace5c17b4766375b00654ceff7c74251aafa80de9dee1aed4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-05-28T04:57:47Z",
    "title_canon_sha256": "36936086a9e48f35927f37cf07492990240a2ccd98775d3cc73ffb8cdfa7f3fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.29358",
    "kind": "arxiv",
    "version": 1
  }
}