Pith Number

pith:6JNJJMXF

pith:2016:6JNJJMXFTMCU6LZX7DRWS35RLX

not attested not anchored not stored refs pending

Chandra Reveals Heavy Obscuration and Circumnuclear Star Formation in Seyfert 2 Galaxy NGC 4968

Andrew F. Ptak, C. Megan Urry, Jane R. Rigby, N. A. Levenson, Peter Boorman, Poshak Gandhi, Stephanie M. LaMassa, Tahir Yaqoob, Timothy M. Heckman

arxiv:1612.01996 v1 · 2016-12-06 · 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{6JNJJMXFTMCU6LZX7DRWS35RLX}

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	2026-05-18T00:52:13.415375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f25a94b2e59b054f2f37f8e3696fb15dfc7e6d81e81d78aa9dd60d00f491a56f

Aliases

arxiv: 1612.01996 · arxiv_version: 1612.01996v1 · doi: 10.48550/arxiv.1612.01996 · pith_short_12: 6JNJJMXFTMCU · pith_short_16: 6JNJJMXFTMCU6LZX · pith_short_8: 6JNJJMXF

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/6JNJJMXFTMCU6LZX7DRWS35RLX \
  | 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: f25a94b2e59b054f2f37f8e3696fb15dfc7e6d81e81d78aa9dd60d00f491a56f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12e1ae23ce28b35c8b8fe2a37e8d1eeac3d87a1ae32ed4a7ffa6c9ea4fc39a6f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-12-06T21:00:00Z",
    "title_canon_sha256": "630acc3a0a269770d6f57e3050060102d63e6c407ff5f0931dcddb65b89bbb81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.01996",
    "kind": "arxiv",
    "version": 1
  }
}