Pith Number

pith:IRQCS7KZ

pith:2015:IRQCS7KZTAWLWLID5BVY3562AW

not attested not anchored not stored refs pending

Dissection with the Fewest Pieces is Hard, Even to Approximate

Anak Yodpinyanee, Erik D. Demaine, Jayson Lynch, Jeffrey Bosboom, Martin L. Demaine, Mikhail Rudoy, Pasin Manurangsi

arxiv:1512.06706 v1 · 2015-12-21 · 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{IRQCS7KZTAWLWLID5BVY3562AW}

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	2026-05-18T01:23:59.874164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4460297d59982cbb2d03e86b8df7da058f15d96624b51b5b8ee4a55890448f12

Aliases

arxiv: 1512.06706 · arxiv_version: 1512.06706v1 · doi: 10.48550/arxiv.1512.06706 · pith_short_12: IRQCS7KZTAWL · pith_short_16: IRQCS7KZTAWLWLID · pith_short_8: IRQCS7KZ

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/IRQCS7KZTAWLWLID5BVY3562AW \
  | 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: 4460297d59982cbb2d03e86b8df7da058f15d96624b51b5b8ee4a55890448f12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c83f7b9909b1f13b0883c453b17fbaa755e55de81c4069b54699a85b0707ae5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2015-12-21T17:06:29Z",
    "title_canon_sha256": "9fd4dc1196ac7f03e71a68e1b9d38061cd7be9b517fce8288cb52630e7f60e13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06706",
    "kind": "arxiv",
    "version": 1
  }
}