Pith Number

pith:RUUXCYNZ

pith:2018:RUUXCYNZVSIMOE6EHUUJ2AU76V

not attested not anchored not stored refs pending

Confirming the Detection of two WHIM Systems along the Line of Sight to 1ES 1553+113

2) ((1) INAF Osservatorio Astronomico di Roma, (2) Harvard-Smithsonian Center for Astrophysics, Cambridge, F. Nicastro (1, Italy, MA, Monte Porzio Catone (RM), USA), Via Frascati

arxiv:1811.03498 v1 · 2018-11-08 · astro-ph.CO · 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{RUUXCYNZVSIMOE6EHUUJ2AU76V}

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	2026-05-18T00:01:15.954662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d297161b9ac90c713c43d289d029ff57cee6c9148cb8d7cbeab333a3817fc6a

Aliases

arxiv: 1811.03498 · arxiv_version: 1811.03498v1 · doi: 10.48550/arxiv.1811.03498 · pith_short_12: RUUXCYNZVSIM · pith_short_16: RUUXCYNZVSIMOE6E · pith_short_8: RUUXCYNZ

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/RUUXCYNZVSIMOE6EHUUJ2AU76V \
  | 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: 8d297161b9ac90c713c43d289d029ff57cee6c9148cb8d7cbeab333a3817fc6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8191fb0fc177468e2e7143af81131504a7e0a4cf5e3d94418f7dcb777db5d77b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-11-08T15:41:40Z",
    "title_canon_sha256": "cb00aedae209f94547edb30ba66b34648c0a6175d42d21f856a76954437218c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.03498",
    "kind": "arxiv",
    "version": 1
  }
}