Pith Number

pith:7UBD3T5L

pith:2018:7UBD3T5LQMNLKBPNGHI62AM64P

not attested not anchored not stored refs pending

Path Puzzles: Discrete Tomography with a Path Constraint is Hard

Adam Hesterberg, Erik D. Demaine, Jeffrey Bosboom, Justin Kopinsky, Martin L. Demaine, Roderick Kimball

arxiv:1803.01176 v2 · 2018-03-03 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7UBD3T5LQMNLKBPNGHI62AM64P}

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	2026-05-17T23:54:25.272667Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd023dcfab831ab505ed31d1ed019ee3e93d0c0813e20b7aa7ca2cfe5e9299b4

Aliases

arxiv: 1803.01176 · arxiv_version: 1803.01176v2 · doi: 10.48550/arxiv.1803.01176 · pith_short_12: 7UBD3T5LQMNL · pith_short_16: 7UBD3T5LQMNLKBPN · pith_short_8: 7UBD3T5L

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/7UBD3T5LQMNLKBPNGHI62AM64P \
  | 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: fd023dcfab831ab505ed31d1ed019ee3e93d0c0813e20b7aa7ca2cfe5e9299b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "298cb6a26aa4d16d123d3199b3c981742ecd5519c1fe896734c7b6d6ef2ceccc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-03-03T14:42:23Z",
    "title_canon_sha256": "5e3cb82a80e2e045857523cb2b70e22ad4dbb3406527f89859350a578b28b60d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01176",
    "kind": "arxiv",
    "version": 2
  }
}