Pith Number

pith:DAM7MFMT

pith:2017:DAM7MFMTYG2WYQYM3BXFJUEURY

not attested not anchored not stored refs pending

A Variation of Levin Search for All Well-Defined Problems

Fouad B. Chedid

arxiv:1702.03152 v1 · 2017-02-10 · cs.CC · 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{DAM7MFMTYG2WYQYM3BXFJUEURY}

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	2026-05-18T00:50:58.565054Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1819f61593c1b56c430cd86e54d0948e3c35a434c75131b314e0fc8b93ce7ab0

Aliases

arxiv: 1702.03152 · arxiv_version: 1702.03152v1 · doi: 10.48550/arxiv.1702.03152 · pith_short_12: DAM7MFMTYG2W · pith_short_16: DAM7MFMTYG2WYQYM · pith_short_8: DAM7MFMT

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/DAM7MFMTYG2WYQYM3BXFJUEURY \
  | 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: 1819f61593c1b56c430cd86e54d0948e3c35a434c75131b314e0fc8b93ce7ab0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0e62737c2578026ea9768b3ace65f924e82c8f3e943199cf21ee926fdc899a6",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2017-02-10T12:43:46Z",
    "title_canon_sha256": "b25581e98965b4a166bed105a5d805fd8bbfae5f68083a955f434ff4f6fa859e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.03152",
    "kind": "arxiv",
    "version": 1
  }
}