Pith Number

pith:4LGRRU5H

pith:2022:4LGRRU5H66XDX4JZQVA3QXOYXH

not attested not anchored not stored refs pending

Transient obscuration event captured in NGC 3227 III. Photoionization modeling of the X-ray obscuration event in 2019

B. De Marco, C. Pinto, D. J. Walton, E. Behar, E. Costantini, G. A. Kriss, G. Branduardi-Raymont, G. Ponti, H. Landt, J. Ebrero, J. S. Kaastra, Junjie Mao, L. Di Gesu, M. Mehdipour, P.-O. Petrucci, S. Bianchi, S. Grafton-Waters, Yasushi Fukazawa, Yijun Wang

arxiv:2204.06813 v1 · 2022-04-14 · 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{4LGRRU5H66XDX4JZQVA3QXOYXH}

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	2026-07-05T04:57:07.476247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2cd18d3a7f7ae3bf1398541b85dd8b9c4bf814de5d30b2ac437c6646bcf96e0

Aliases

arxiv: 2204.06813 · arxiv_version: 2204.06813v1 · doi: 10.48550/arxiv.2204.06813 · pith_short_12: 4LGRRU5H66XD · pith_short_16: 4LGRRU5H66XDX4JZ · pith_short_8: 4LGRRU5H

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/4LGRRU5H66XDX4JZQVA3QXOYXH \
  | 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: e2cd18d3a7f7ae3bf1398541b85dd8b9c4bf814de5d30b2ac437c6646bcf96e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0975d78ac9db5c3cd38de5c9bab85ce671428108d551380bc4302bb3be836c8e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-04-14T08:20:43Z",
    "title_canon_sha256": "9295869c8d8368b2b5ee0df5a8f9cc0e4041554793839e7ee6591df4db23510f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.06813",
    "kind": "arxiv",
    "version": 1
  }
}