Pith Number

pith:PXDDAH6S

pith:2022:PXDDAH6SKGSPC5ALONRD2GQSSH

not attested not anchored not stored refs pending

A truncated inner disc in the Seyfert 1 galaxy WKK 4438

D. J. Walton, F. D'Ammando, J. Jiang, L. C. Gallo, M. Z. Buhariwalla

arxiv:2207.02340 v1 · 2022-07-05 · 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{PXDDAH6SKGSPC5ALONRD2GQSSH}

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	2026-07-05T04:41:46.440949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7dc6301fd251a4f1740b73623d1a1291e85cfbcd168ab42e58feaa1a840b99c1

Aliases

arxiv: 2207.02340 · arxiv_version: 2207.02340v1 · doi: 10.48550/arxiv.2207.02340 · pith_short_12: PXDDAH6SKGSP · pith_short_16: PXDDAH6SKGSPC5AL · pith_short_8: PXDDAH6S

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/PXDDAH6SKGSPC5ALONRD2GQSSH \
  | 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: 7dc6301fd251a4f1740b73623d1a1291e85cfbcd168ab42e58feaa1a840b99c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bcb682c645b3a47fa521e4be8946ad91a82252c74fef2eed4808cc48cb44df9e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-07-05T22:13:15Z",
    "title_canon_sha256": "565eaf8ee955a6fc763e88bc727cf285f695cf8094e3fc624364418ecfdd402c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.02340",
    "kind": "arxiv",
    "version": 1
  }
}