Pith Number

pith:HCO56UFD

pith:2013:HCO56UFDFFI2KBSYOH66A2LBCD

not attested not anchored not stored refs pending

Geospatial Optimization Problems

Paulo Shakarian, V.S. Subrahmanian

arxiv:1303.4632 v1 · 2013-03-19 · 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{HCO56UFDFFI2KBSYOH66A2LBCD}

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	2026-05-18T03:30:26.661671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

389ddf50a32951a5065871fde0696110cc03a551cc0d84b18634211d3e7fc0d0

Aliases

arxiv: 1303.4632 · arxiv_version: 1303.4632v1 · doi: 10.48550/arxiv.1303.4632 · pith_short_12: HCO56UFDFFI2 · pith_short_16: HCO56UFDFFI2KBSY · pith_short_8: HCO56UFD

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/HCO56UFDFFI2KBSYOH66A2LBCD \
  | 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: 389ddf50a32951a5065871fde0696110cc03a551cc0d84b18634211d3e7fc0d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e6b20b3a388a7915fadba00a247f10d6dcb1f2677955fd13006675b1d12d323",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-03-19T15:02:55Z",
    "title_canon_sha256": "93771ea1056043b38cb70003b7f0d22bcdd1a7848c454bffda998b20e2d62848"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.4632",
    "kind": "arxiv",
    "version": 1
  }
}