Pith Number

pith:IZI5XA5Z

pith:2015:IZI5XA5ZI4Y3W635XG3OS7ODIT

not attested not anchored not stored refs pending

IV-matching is strongly NP-hard

Du\v{s}an Knop, Luk\'a\v{s} Folwarczn\'y

arxiv:1506.08388 v1 · 2015-06-28 · cs.DM · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IZI5XA5ZI4Y3W635XG3OS7ODIT}

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	2026-05-18T01:37:45.420332Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4651db83b94731bb7b7db9b6e97dc344c53e484f0e979863f3d42e1ce1b094cb

Aliases

arxiv: 1506.08388 · arxiv_version: 1506.08388v1 · doi: 10.48550/arxiv.1506.08388 · pith_short_12: IZI5XA5ZI4Y3 · pith_short_16: IZI5XA5ZI4Y3W635 · pith_short_8: IZI5XA5Z

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/IZI5XA5ZI4Y3W635XG3OS7ODIT \
  | 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: 4651db83b94731bb7b7db9b6e97dc344c53e484f0e979863f3d42e1ce1b094cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc1673e3655997818662325547b214e4b5fa0ca72bf7a97c81ed76b89d730984",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-06-28T12:25:15Z",
    "title_canon_sha256": "889f92bee88b71f179bac600e885ba694964354350988f5f52f751f41f80429a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.08388",
    "kind": "arxiv",
    "version": 1
  }
}