Pith Number

pith:FF5HF7KX

pith:2026:FF5HF7KXMNCCI5E4SSB6BIYFQV

not attested not anchored not stored refs pending

Hierarchical Sparse Circuit Extraction from Billion-Parameter Language Models through Scalable Attribution Graph Decomposition

Mohammed Kaif Pasha, Mohammed Mudassir Uddin, Shahnawaz Alam

arxiv:2601.12879 v2 · 2026-01-19 · cs.LG · cs.AI · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FF5HF7KXMNCCI5E4SSB6BIYFQV}

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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.

Receipt and verification

First computed	2026-06-23T02:12:46.002597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

297a72fd57634424749c9483e0a3058562e64aa9f1a4c602c608a2db3a8862c8

Aliases

arxiv: 2601.12879 · arxiv_version: 2601.12879v2 · doi: 10.48550/arxiv.2601.12879 · pith_short_12: FF5HF7KXMNCC · pith_short_16: FF5HF7KXMNCCI5E4 · pith_short_8: FF5HF7KX

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/FF5HF7KXMNCCI5E4SSB6BIYFQV \
  | 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: 297a72fd57634424749c9483e0a3058562e64aa9f1a4c602c608a2db3a8862c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f771ca9bbcb553a4da4b5ffdb5e7c4e50846c11306350daf4d4fea19b8732295",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-01-19T09:34:10Z",
    "title_canon_sha256": "412d91e2d89ecaf42ff862951d9a846b622aac26b7b49adade3316e526c43c34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.12879",
    "kind": "arxiv",
    "version": 2
  }
}