Pith Number

pith:5R2WWJX6

pith:2016:5R2WWJX6MIGM2LZN3WWF34ESPG

not attested not anchored not stored refs pending

Separating Sets of Strings by Finding Matching Patterns is Almost Always Hard

Giuseppe Lancia, Luke Mathieson, Pablo Moscato

arxiv:1604.03243 v3 · 2016-04-12 · cs.CC · cs.AI · 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{5R2WWJX6MIGM2LZN3WWF34ESPG}

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	2026-05-18T00:54:47.841794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec756b26fe620ccd2f2dddac5df09279b4f8aca56e9cbccdf14eb394cd1fe19f

Aliases

arxiv: 1604.03243 · arxiv_version: 1604.03243v3 · doi: 10.48550/arxiv.1604.03243 · pith_short_12: 5R2WWJX6MIGM · pith_short_16: 5R2WWJX6MIGM2LZN · pith_short_8: 5R2WWJX6

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/5R2WWJX6MIGM2LZN3WWF34ESPG \
  | 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: ec756b26fe620ccd2f2dddac5df09279b4f8aca56e9cbccdf14eb394cd1fe19f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba4a827c72d10576fac2a6f3d10a079a823774c239f27eedcbf9f266c6724e9b",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2016-04-12T04:37:35Z",
    "title_canon_sha256": "17c11d7f08660d31db1d8033a172752049479140fde55244c83065e3ffb5a8ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03243",
    "kind": "arxiv",
    "version": 3
  }
}