Pith Number

pith:3ZBYXTKK

pith:2011:3ZBYXTKKMJ5X76MKZRMBQGADOF

not attested not anchored not stored refs pending

New Results on the Fault-Tolerant Facility Placement Problem

Li Yan, Marek Chrobak

arxiv:1108.5471 v1 · 2011-08-27 · 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{3ZBYXTKKMJ5X76MKZRMBQGADOF}

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	2026-05-18T04:14:37.444962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de438bcd4a627b7ff98acc581818037159ccdc22433fad1c32c25bf33a3f8785

Aliases

arxiv: 1108.5471 · arxiv_version: 1108.5471v1 · doi: 10.48550/arxiv.1108.5471 · pith_short_12: 3ZBYXTKKMJ5X · pith_short_16: 3ZBYXTKKMJ5X76MK · pith_short_8: 3ZBYXTKK

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/3ZBYXTKKMJ5X76MKZRMBQGADOF \
  | 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: de438bcd4a627b7ff98acc581818037159ccdc22433fad1c32c25bf33a3f8785

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f70a456cdb720f4bffa7007e0782c6eb2627e3c39a738e89bf8f33cb77de796",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-08-27T19:31:25Z",
    "title_canon_sha256": "20c4e812a2132ba02fbc12fcc7abab606b338bff1b9cad178264a67b7699d11a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5471",
    "kind": "arxiv",
    "version": 1
  }
}