Pith Number

pith:FULLKIKS

pith:2018:FULLKIKSIVFZYCMNYKCDDDTNOZ

not attested not anchored not stored refs pending

Yet another UFO in the X-ray spectrum of a high-z lensed QSO

B. De Marco, C. Vignali, E. Torresi, G. Chartas, G. Lanzuisi, G. Ponti, M. Cappi, M. Dadina, M. Giustini

arxiv:1801.09839 v1 · 2018-01-30 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FULLKIKSIVFZYCMNYKCDDDTNOZ}

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	2026-05-18T00:21:06.313348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d16b52152454b9c098dc284318e6d7667abbfbc034271e2578fac5143862e51

Aliases

arxiv: 1801.09839 · arxiv_version: 1801.09839v1 · doi: 10.48550/arxiv.1801.09839 · pith_short_12: FULLKIKSIVFZ · pith_short_16: FULLKIKSIVFZYCMN · pith_short_8: FULLKIKS

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/FULLKIKSIVFZYCMNYKCDDDTNOZ \
  | 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: 2d16b52152454b9c098dc284318e6d7667abbfbc034271e2578fac5143862e51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc7ca22939f6328d7d6a8b36556dc02a766869a094d73d5831a9475a5d5c2ea3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-01-30T03:14:43Z",
    "title_canon_sha256": "6c3992c92f9113c47a24f91d9c94c72865cc6ad5a4232b841da1230dd6d7b4c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09839",
    "kind": "arxiv",
    "version": 1
  }
}