Pith Number

pith:5PUVOYJN

pith:2011:5PUVOYJNXPZ27UFXKRPVG2QYQD

not attested not anchored not stored refs pending

Observatories in Space

Catherine Turon (GEPI)

arxiv:1102.4955 v2 · 2011-02-24 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5PUVOYJNXPZ27UFXKRPVG2QYQD}

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	2026-05-18T04:26:34.085053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebe957612dbbf3afd0b7545f536a1880f9285f057c7adb2637db7c9d4f06854a

Aliases

arxiv: 1102.4955 · arxiv_version: 1102.4955v2 · doi: 10.48550/arxiv.1102.4955 · pith_short_12: 5PUVOYJNXPZ2 · pith_short_16: 5PUVOYJNXPZ27UFX · pith_short_8: 5PUVOYJN

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/5PUVOYJNXPZ27UFXKRPVG2QYQD \
  | 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: ebe957612dbbf3afd0b7545f536a1880f9285f057c7adb2637db7c9d4f06854a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80d7053c0079fa68f24f65fc9f5af5da85f6e31257d290057f2fb5d767a651c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-02-24T10:49:40Z",
    "title_canon_sha256": "d2087579774e26f81062741d0dfa284f9fbd8cbf1d9c85ec90314907dd078865"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.4955",
    "kind": "arxiv",
    "version": 2
  }
}