Pith Number

pith:IPMITHK7

pith:2025:IPMITHK74BTYVGBY5HNDIIHGPZ

not attested not anchored not stored refs pending

One Weird Trick to Untie Landin's Knot

Paulette Koronkevich, William J. Bowman

arxiv:2507.21317 v1 · 2025-07-28 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IPMITHK74BTYVGBY5HNDIIHGPZ}

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	2026-07-05T11:44:57.511992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43d8899d5fe0678a9838e9da3420e67e74a188f3d49f48a1cee6c083c5952ffc

Aliases

arxiv: 2507.21317 · arxiv_version: 2507.21317v1 · doi: 10.48550/arxiv.2507.21317 · pith_short_12: IPMITHK74BTY · pith_short_16: IPMITHK74BTYVGBY · pith_short_8: IPMITHK7

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/IPMITHK74BTYVGBY5HNDIIHGPZ \
  | 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: 43d8899d5fe0678a9838e9da3420e67e74a188f3d49f48a1cee6c083c5952ffc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "107c40355c99b586471064442d1fdc28f3cb6b086cf4ede672e1c677c3239001",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2025-07-28T20:19:06Z",
    "title_canon_sha256": "2be922bd154242c157447e133cf6d0219dcb5b5813206d58d6889426901a35ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.21317",
    "kind": "arxiv",
    "version": 1
  }
}