Pith Number

pith:VCNPGMVA

pith:2011:VCNPGMVAI5A5UUWZUKFRAPQJAZ

not attested not anchored not stored refs pending

A Deep Chandra View of the NGC 404 Central Engine

Anil C. Seth, Benjamin F. Williams, Breanna Binder, Daniel R. Weisz, Evan D. Skillman, Julianne J. Dalcanton, Mike Eracleous, Paul P. Plucinsky, Scott F. Anderson, Terrance J. Gaetz

arxiv:1104.0981 v3 · 2011-04-06 · astro-ph.HE · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VCNPGMVAI5A5UUWZUKFRAPQJAZ}

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	2026-05-18T02:02:37.460105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a89af332a04741da52d9a28b103e09067b1ed63e71b8106ccdeaca5fa2596a76

Aliases

arxiv: 1104.0981 · arxiv_version: 1104.0981v3 · doi: 10.48550/arxiv.1104.0981 · pith_short_12: VCNPGMVAI5A5 · pith_short_16: VCNPGMVAI5A5UUWZ · pith_short_8: VCNPGMVA

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/VCNPGMVAI5A5UUWZUKFRAPQJAZ \
  | 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: a89af332a04741da52d9a28b103e09067b1ed63e71b8106ccdeaca5fa2596a76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "306b111114d4ffd9f5ebef9204f0c369fd002238f15e6f44c140e03dfdf16258",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-04-06T00:43:24Z",
    "title_canon_sha256": "2996edab2a0290c108b5eb4118bd69463e17180a185d7089d64b38dabddee8ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0981",
    "kind": "arxiv",
    "version": 3
  }
}