Pith Number

pith:4FIP5Y63

pith:2022:4FIP5Y63HPJUHP6CX2FIHDB4Y7

not attested not anchored not stored refs pending

Spectropolarimetry and spectral decomposition of high-accreting Narrow Line Seyfert 1 galaxies

Bo\.zena Czerny, Chandra Shekhar Saraf, {\DJ}orge Savi\'c, Jian-Min Wang, Luka \v{C}. Popovi\'c, Mary Loli Mart\'inez-Aldama, Marzena \'Sniegowska, Paola Marziani, Pu Du, Swayamtrupta Panda

arxiv:2202.13839 v2 · 2022-02-28 · 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{4FIP5Y63HPJUHP6CX2FIHDB4Y7}

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	2026-07-05T06:59:19.888634Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e150fee3db3bd343bfc2be8a838c3cc7d6e11bf2c85efafec6e89e6b802da856

Aliases

arxiv: 2202.13839 · arxiv_version: 2202.13839v2 · doi: 10.48550/arxiv.2202.13839 · pith_short_12: 4FIP5Y63HPJU · pith_short_16: 4FIP5Y63HPJUHP6C · pith_short_8: 4FIP5Y63

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/4FIP5Y63HPJUHP6CX2FIHDB4Y7 \
  | 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: e150fee3db3bd343bfc2be8a838c3cc7d6e11bf2c85efafec6e89e6b802da856

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c755ccfde23e401eb5e9e3d9357c80f191d181d6c774d98a7378a777190f6ec",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-02-28T14:53:05Z",
    "title_canon_sha256": "73354bec02d34e5807da134168b43dae26fce906171cbded585c7a53215d1494"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.13839",
    "kind": "arxiv",
    "version": 2
  }
}