Pith Number

pith:QRPNYWLY

pith:2016:QRPNYWLYEGAXZ4O3BCKHDTI2RR

not attested not anchored not stored refs pending

Asking the metaquestions in constraint tractability

Benoit Larose, Hubie Chen

arxiv:1604.00932 v2 · 2016-04-04 · cs.CC · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QRPNYWLYEGAXZ4O3BCKHDTI2RR}

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	2026-05-18T00:53:17.582580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

845edc597821817cf1db089471cd1a8c5d1b4f3319189b74259db2b69643d7aa

Aliases

arxiv: 1604.00932 · arxiv_version: 1604.00932v2 · doi: 10.48550/arxiv.1604.00932 · pith_short_12: QRPNYWLYEGAX · pith_short_16: QRPNYWLYEGAXZ4O3 · pith_short_8: QRPNYWLY

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/QRPNYWLYEGAXZ4O3BCKHDTI2RR \
  | 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: 845edc597821817cf1db089471cd1a8c5d1b4f3319189b74259db2b69643d7aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8388f42e96e71e6d49ecec918ec65a826f9a66011e59a223a7622c26b32cd259",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2016-04-04T16:18:16Z",
    "title_canon_sha256": "6defa088851e672e9508c8759e38f08bc8282de1842e42999118be6793016da1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.00932",
    "kind": "arxiv",
    "version": 2
  }
}