Pith Number

pith:DDGQO3NK

pith:2010:DDGQO3NKX5ZYR7FA3RKYUCC4SZ

not attested not anchored not stored refs pending

A Study of Geolocation Databases

Noa Zilberman, Yuval Shavitt

arxiv:1005.5674 v3 · 2010-05-31 · cs.NI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDGQO3NKX5ZYR7FA3RKYUCC4SZ}

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	2026-05-18T02:23:48.615539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18cd076daabf7388fca0dc558a085c96790d4eb4e07fe11edc42af543b951065

Aliases

arxiv: 1005.5674 · arxiv_version: 1005.5674v3 · doi: 10.48550/arxiv.1005.5674 · pith_short_12: DDGQO3NKX5ZY · pith_short_16: DDGQO3NKX5ZYR7FA · pith_short_8: DDGQO3NK

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/DDGQO3NKX5ZYR7FA3RKYUCC4SZ \
  | 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: 18cd076daabf7388fca0dc558a085c96790d4eb4e07fe11edc42af543b951065

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "658695a478511ec21d0327d68d07349e184819948f5d6f9a7223d54f22fa5ede",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2010-05-31T12:34:13Z",
    "title_canon_sha256": "ac8960a9f8c79c99b3b42520fa6732a81ce672a5359ad9902e69a7d3f37377d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.5674",
    "kind": "arxiv",
    "version": 3
  }
}