Pith Number

pith:RRANS2QW

pith:2018:RRANS2QWVHMBH3EBHU3NKAPOLY

not attested not anchored not stored refs pending

AGN Broad Line Region variability in the context of Eigenvector 1: case of NGC 5548

(2) Osservatorio Astronomico di Padova (INAF) Padua, Belgrade, Edi Bon (1), Italy), Nata\v{s}a Bon (1), Paola Marziani (2) ((1) Astronomical Observatory, Serbia

arxiv:1801.09493 v1 · 2018-01-29 · 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{RRANS2QWVHMBH3EBHU3NKAPOLY}

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	2026-05-18T00:24:57.266230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c40d96a16a9d813ec813d36d501ee5e1b36c7f38adb4c6dcaeba1cdcc6147d9

Aliases

arxiv: 1801.09493 · arxiv_version: 1801.09493v1 · doi: 10.48550/arxiv.1801.09493 · pith_short_12: RRANS2QWVHMB · pith_short_16: RRANS2QWVHMBH3EB · pith_short_8: RRANS2QW

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/RRANS2QWVHMBH3EBHU3NKAPOLY \
  | 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: 8c40d96a16a9d813ec813d36d501ee5e1b36c7f38adb4c6dcaeba1cdcc6147d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c161b6a1cfbb0bad0fd9b4450754acda83067a4aa5efdb62f6a5c40efd671dee",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-29T13:20:46Z",
    "title_canon_sha256": "b966e65973ed8062ca8d499cd5c18ab6cc810c0a95594b450e7a2b1db17fbf32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09493",
    "kind": "arxiv",
    "version": 1
  }
}