Pith Number

pith:XSILF6JE

pith:2019:XSILF6JETQXQ63FO6WRVKEQTTQ

not attested not anchored not stored refs pending

Star Routing: Between Vehicle Routing and Vertex Cover

Diego Delle Donne, Guido Tagliavini

arxiv:1901.09154 v1 · 2019-01-26 · 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{XSILF6JETQXQ63FO6WRVKEQTTQ}

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	2026-05-17T23:55:30.390740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc90b2f9249c2f0f6caef5a35512139c2efff291cbacdde7ea428b1ad3af0dd5

Aliases

arxiv: 1901.09154 · arxiv_version: 1901.09154v1 · doi: 10.48550/arxiv.1901.09154 · pith_short_12: XSILF6JETQXQ · pith_short_16: XSILF6JETQXQ63FO · pith_short_8: XSILF6JE

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/XSILF6JETQXQ63FO6WRVKEQTTQ \
  | 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: bc90b2f9249c2f0f6caef5a35512139c2efff291cbacdde7ea428b1ad3af0dd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b843f05cb561ed84e695858c7afae353a0474f37a75924ae0f51b50d8025e2f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-01-26T03:52:03Z",
    "title_canon_sha256": "ab9ab46422019cbacd9c6275f26e23333257f5d23165ba8eb5f83d5782cce1ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09154",
    "kind": "arxiv",
    "version": 1
  }
}