Pith Number

pith:5FWFMXPX

pith:2008:5FWFMXPX5I7YOLXBAZQ2Z3LAAQ

not attested not anchored not stored refs pending

Simulated Annealing for Optimal Ship Routing

D. S. Vlachos, O. T. Kosmas

arxiv:0811.2162 v2 · 2008-11-13 · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5FWFMXPX5I7YOLXBAZQ2Z3LAAQ}

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	2026-07-04T15:42:05.399611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e96c565df7ea3f872ee10661aced6004230c03f5c1d6c9c0f4fbc33d10c9e20c

Aliases

arxiv: 0811.2162 · arxiv_version: 0811.2162v2 · doi: 10.48550/arxiv.0811.2162 · pith_short_12: 5FWFMXPX5I7Y · pith_short_16: 5FWFMXPX5I7YOLXB · pith_short_8: 5FWFMXPX

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/5FWFMXPX5I7YOLXBAZQ2Z3LAAQ \
  | 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: e96c565df7ea3f872ee10661aced6004230c03f5c1d6c9c0f4fbc33d10c9e20c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7339782b225ca46bec309a3290f2ec4908133a5bf83b5a10edbe1cf05335d99c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2008-11-13T16:15:58Z",
    "title_canon_sha256": "0d2af16b8f20d36f6964f233a3f1f3095e4a7b9bfc4fcc60b2e398042443178d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.2162",
    "kind": "arxiv",
    "version": 2
  }
}