Pith Number

pith:V2QBO7SS

pith:2015:V2QBO7SSZ5K2YA5KBRZBGZZ2B6

not attested not anchored not stored refs pending

The Packing While Traveling Problem

Frank Neumann, Sergey Polyakovskiy

arxiv:1512.08831 v2 · 2015-12-30 · 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{V2QBO7SSZ5K2YA5KBRZBGZZ2B6}

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	2026-05-18T00:48:20.334927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aea0177e52cf55ac03aa0c7213673a0fac7586ce5cce43f95d89dbc93fb078eb

Aliases

arxiv: 1512.08831 · arxiv_version: 1512.08831v2 · doi: 10.48550/arxiv.1512.08831 · pith_short_12: V2QBO7SSZ5K2 · pith_short_16: V2QBO7SSZ5K2YA5K · pith_short_8: V2QBO7SS

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/V2QBO7SSZ5K2YA5KBRZBGZZ2B6 \
  | 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: aea0177e52cf55ac03aa0c7213673a0fac7586ce5cce43f95d89dbc93fb078eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47c424f4ff77bcad2b82bb20e4c9eec7373bb59d28d3e3cd50ddb6c7e14b31df",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-12-30T02:40:39Z",
    "title_canon_sha256": "3e6b0a3b2fbb7491c21801ebda562a61d20b7372a245b9c6716737b6339e07e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.08831",
    "kind": "arxiv",
    "version": 2
  }
}