Pith Number

pith:45H253MJ

pith:2026:45H253MJB4KU2ZUJRDIVAEPACC

not attested not anchored not stored refs pending

Localizing RL-Induced Tool Use to a Single Crosscoder Feature

Ahmed Zeyad A Alzahrani, Andrii Shportko, Bowen Cheng, Gustavo Mercier, Jessica Hullman, Shubham Bhokare

arxiv:2606.26474 v1 · 2026-06-25 · cs.LG · 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{45H253MJB4KU2ZUJRDIVAEPACC}

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	2026-06-26T01:15:32.219801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e74faeed890f154d668988d15011e0109021ee6ec7ec89adf6cfef0bfb31fa2c

Aliases

arxiv: 2606.26474 · arxiv_version: 2606.26474v1 · doi: 10.48550/arxiv.2606.26474 · pith_short_12: 45H253MJB4KU · pith_short_16: 45H253MJB4KU2ZUJ · pith_short_8: 45H253MJ

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/45H253MJB4KU2ZUJRDIVAEPACC \
  | 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: e74faeed890f154d668988d15011e0109021ee6ec7ec89adf6cfef0bfb31fa2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbcb1bc67f5830232aa67bef7aa4545d327d53393499be71c30aec5536fd2c7b",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-06-25T00:17:11Z",
    "title_canon_sha256": "0e54f3265bd4d8b19710020244abd470c27a6017d4d2b8fdb0b323639c857c9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.26474",
    "kind": "arxiv",
    "version": 1
  }
}