Pith Number

pith:OXFE56QK

pith:2019:OXFE56QKMN6SYE2BBEOWYHLPCG

not attested not anchored not stored refs pending

The nature of the soft-excess and spectral variability in the Seyfert 1 galaxy Zw 229.015

C-Y. Chiang, L. C. Gallo, S. G. H. Waddell, S. Tripathi, W. F. Welsh

arxiv:1907.07048 v1 · 2019-07-16 · astro-ph.HE · 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{OXFE56QKMN6SYE2BBEOWYHLPCG}

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.

Cited by

1 paper in Pith

The emergence of X-ray emission lines during relativistic radio-jet formation in the changing-look active galactic nucleus 1ES 1927+654

Receipt and verification

First computed	2026-07-04T23:50:21.117747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75ca4efa0a637d2c1341091d6c1d6f11b6ad2ad22cb5286f86cfaebfcc428f3f

Aliases

arxiv: 1907.07048 · arxiv_version: 1907.07048v1 · doi: 10.48550/arxiv.1907.07048 · pith_short_12: OXFE56QKMN6S · pith_short_16: OXFE56QKMN6SYE2B · pith_short_8: OXFE56QK

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/OXFE56QKMN6SYE2BBEOWYHLPCG \
  | 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: 75ca4efa0a637d2c1341091d6c1d6f11b6ad2ad22cb5286f86cfaebfcc428f3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "632e05fa56f66f11bfb73e109dc396877f67ce2cd8e9f7bb9194ab47f40f6815",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-07-16T15:04:21Z",
    "title_canon_sha256": "844742c4c470df67063e614e42fd8169aeb40a8415ca4f500fe9a7d496434b6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.07048",
    "kind": "arxiv",
    "version": 1
  }
}