Pith Number

pith:6GD7W3VL

pith:2015:6GD7W3VLOQPABYEVEWHWNWQTOM

not attested not anchored not stored refs pending

What is Cook's theorem?

JianMing Zhou, Yu Li

arxiv:1501.01910 v1 · 2015-01-08 · 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{6GD7W3VLOQPABYEVEWHWNWQTOM}

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	2026-05-18T02:29:46.050593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f187fb6eab741e00e095258f66da137310f3e7d7bace7f51de85dc659261c466

Aliases

arxiv: 1501.01910 · arxiv_version: 1501.01910v1 · doi: 10.48550/arxiv.1501.01910 · pith_short_12: 6GD7W3VLOQPA · pith_short_16: 6GD7W3VLOQPABYEV · pith_short_8: 6GD7W3VL

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/6GD7W3VLOQPABYEVEWHWNWQTOM \
  | 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: f187fb6eab741e00e095258f66da137310f3e7d7bace7f51de85dc659261c466

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc47e6b7239d7a93168f706d0fbb50143f21bea054fb18831eccfd5734414a59",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-01-08T17:41:21Z",
    "title_canon_sha256": "c4b647150f38997a5148ae0e53c55bf974a4c164617d523878b6ccd805155bc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.01910",
    "kind": "arxiv",
    "version": 1
  }
}