Pith Number

pith:4QFP7GBF

pith:2020:4QFP7GBFPFASZDTXHCVZ5WTVBY

not attested not anchored not stored refs pending

Revisiting the complex nuclear region of NGC 6240 with Chandra

A. Paggi, E. Nardini, G. Fabbiano, Junfeng Wang, M. Elvis, M. Karovska

arxiv:2009.01824 v1 · 2020-09-03 · 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{4QFP7GBFPFASZDTXHCVZ5WTVBY}

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	2026-07-05T01:44:19.182918Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e40aff982579412c8e7738ab9eda750e06dd751860689f36599365d188d80c97

Aliases

arxiv: 2009.01824 · arxiv_version: 2009.01824v1 · doi: 10.48550/arxiv.2009.01824 · pith_short_12: 4QFP7GBFPFAS · pith_short_16: 4QFP7GBFPFASZDTX · pith_short_8: 4QFP7GBF

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/4QFP7GBFPFASZDTXHCVZ5WTVBY \
  | 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: e40aff982579412c8e7738ab9eda750e06dd751860689f36599365d188d80c97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30e3aaaaa4620dc238c84b252c99c3a0c6e09471d91d35fce57c9b2b988dca6b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-09-03T17:41:38Z",
    "title_canon_sha256": "2222b8f565bce6259a5298e6f705d6234b081652adbb97e3346f69322d392cb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.01824",
    "kind": "arxiv",
    "version": 1
  }
}