Pith Number

pith:SZX42P3U

pith:2021:SZX42P3UM6GRZCV3AXPO3E6AO4

not attested not anchored not stored refs pending

X-ray obscuration from a variable ionized absorber in PG 1114+445

A. Tortosa, E. Piconcelli, F. G. Saturni, F. Tombesi, F. Vagnetti, G. Giani, M. Gaspari, P. Severgnini, R. Della Ceca, R. Middei, R. Serafinelli, V. Braito

arxiv:2107.06584 v1 · 2021-07-14 · astro-ph.GA · 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{SZX42P3UM6GRZCV3AXPO3E6AO4}

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	2026-07-05T03:21:54.961099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

966fcd3f74678d1c8abb05deed93c0771174286c0617a54c9752c3dc89e1072f

Aliases

arxiv: 2107.06584 · arxiv_version: 2107.06584v1 · doi: 10.48550/arxiv.2107.06584 · pith_short_12: SZX42P3UM6GR · pith_short_16: SZX42P3UM6GRZCV3 · pith_short_8: SZX42P3U

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/SZX42P3UM6GRZCV3AXPO3E6AO4 \
  | 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: 966fcd3f74678d1c8abb05deed93c0771174286c0617a54c9752c3dc89e1072f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc8661b75a105d13a60aa540f347d5829639ccb326b3a15044b6d98efa939e17",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-07-14T10:08:15Z",
    "title_canon_sha256": "e8d382ee0a5aa02aab0a611cb8dabb23d71949764ac400baefa7db178fddef86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.06584",
    "kind": "arxiv",
    "version": 1
  }
}