Pith Number

pith:4OWPMRG6

pith:2011:4OWPMRG6HG6NTNZDIZE2LN65JZ

not attested not anchored not stored refs pending

Astrometry during the past 2000 years

Erik H{\o}g

arxiv:1104.4554 v2 · 2011-04-23 · astro-ph.IM · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4OWPMRG6HG6NTNZDIZE2LN65JZ}

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	2026-05-18T04:23:11.376374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3acf644de39bcd9b7234649a5b7dd4e63b46ec2456f1c60f51ece65cf1ec6b8

Aliases

arxiv: 1104.4554 · arxiv_version: 1104.4554v2 · doi: 10.48550/arxiv.1104.4554 · pith_short_12: 4OWPMRG6HG6N · pith_short_16: 4OWPMRG6HG6NTNZD · pith_short_8: 4OWPMRG6

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/4OWPMRG6HG6NTNZDIZE2LN65JZ \
  | 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: e3acf644de39bcd9b7234649a5b7dd4e63b46ec2456f1c60f51ece65cf1ec6b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a8838fc356a4542a1904145efa8da8b6b29ae548551ddfdf9b838a7b7d04283",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-04-23T12:55:40Z",
    "title_canon_sha256": "ba4a6becaaf6569c47a7963c33e400760773097b754fa568085766d4bc78545a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4554",
    "kind": "arxiv",
    "version": 2
  }
}