Pith Number

pith:KJHMBJKV

pith:2014:KJHMBJKVUWSGWMVWLDJNMDQEYT

not attested not anchored not stored refs pending

Scheduling with two non-unit task lengths is NP-complete

Jan Elffers, Mathijs de Weerdt

arxiv:1412.3095 v2 · 2014-12-09 · 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{KJHMBJKVUWSGWMVWLDJNMDQEYT}

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	2026-05-18T00:31:44.038186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

524ec0a555a5a46b32b658d2d60e04c4cc8b48826c3575934053463cd4b8e4cf

Aliases

arxiv: 1412.3095 · arxiv_version: 1412.3095v2 · doi: 10.48550/arxiv.1412.3095 · pith_short_12: KJHMBJKVUWSG · pith_short_16: KJHMBJKVUWSGWMVW · pith_short_8: KJHMBJKV

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/KJHMBJKVUWSGWMVWLDJNMDQEYT \
  | 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: 524ec0a555a5a46b32b658d2d60e04c4cc8b48826c3575934053463cd4b8e4cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02495c24d2556cc2332a3df8c68f7aa647fefc71ac66a7012e8ac54a1c96de01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2014-12-09T20:41:36Z",
    "title_canon_sha256": "c1d1413835737851b01175f08b39145f355eff676d133e19555f2683814b42f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.3095",
    "kind": "arxiv",
    "version": 2
  }
}