Pith Number

pith:WHR7X5FO

pith:2012:WHR7X5FOJYUHH2ICTATAVZKUQV

not attested not anchored not stored refs pending

Necklaces, Convolutions, and X+Y

David Bremner, Erik D. Demaine, Ferran Hurtado, Jeff Erickson, John Iacono, Mihai Patrascu, Perouz Taslakian, Stefan Langerman, Timothy M. Chan

arxiv:1212.4771 v1 · 2012-12-19 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WHR7X5FOJYUHH2ICTATAVZKUQV}

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	2026-05-18T03:38:05.413363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1e3fbf4ae4e2873e90298260ae55485618c76c4abda0c5761c77e227fe9d7bc

Aliases

arxiv: 1212.4771 · arxiv_version: 1212.4771v1 · doi: 10.48550/arxiv.1212.4771 · pith_short_12: WHR7X5FOJYUH · pith_short_16: WHR7X5FOJYUHH2IC · pith_short_8: WHR7X5FO

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/WHR7X5FOJYUHH2ICTATAVZKUQV \
  | 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: b1e3fbf4ae4e2873e90298260ae55485618c76c4abda0c5761c77e227fe9d7bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee5904d89779570446de09f51d107660b9a34a89da8fcaee35bc506a734b3a74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-12-19T18:07:20Z",
    "title_canon_sha256": "a24596750d0f2440118222f211c19083fc5ed4115e561166cd90877f69a606ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4771",
    "kind": "arxiv",
    "version": 1
  }
}