Pith Number

pith:C5POULQL

pith:2026:C5POULQLHFCNIK3SQYDUZEKZ3R

not attested not anchored not stored refs pending

BOHM: Zero-Cost Hierarchical Attribution for Compound AI Systems

Joss Armstrong

arxiv:2605.22866 v1 · 2026-05-19 · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C5POULQLHFCNIK3SQYDUZEKZ3R}

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	2026-05-25T02:01:27.695289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

175eea2e0b3944d42b7286074c9159dc53e2d0d8c497a10ffc1d1ef6cc65a7d5

Aliases

arxiv: 2605.22866 · arxiv_version: 2605.22866v1 · doi: 10.48550/arxiv.2605.22866 · pith_short_12: C5POULQLHFCN · pith_short_16: C5POULQLHFCNIK3S · pith_short_8: C5POULQL

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/C5POULQLHFCNIK3SQYDUZEKZ3R \
  | 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: 175eea2e0b3944d42b7286074c9159dc53e2d0d8c497a10ffc1d1ef6cc65a7d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22c3b78f53914bdc26b21399e92a789a21ca0b75ec79ffe86f6b64479ea4e173",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-05-19T19:38:14Z",
    "title_canon_sha256": "dab4a80b8e65e3836336d121c5d977b79a28e784457d14ad7ea035aecfae3c5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.22866",
    "kind": "arxiv",
    "version": 1
  }
}