Pith Number

pith:NRGSJ4BP

pith:2012:NRGSJ4BP63XDUCRTNMDB6MTQM4

not attested not anchored not stored refs pending

The Intermediate Mass Black Hole Candidate in the Center of NGC 404: New Evidence from Radio Continuum Observations

B. Ashley Zauderer, Joan Wrobel, Josh Marvil, Kristina Nyland, Lisa Young

arxiv:1204.3089 v1 · 2012-04-13 · astro-ph.GA · astro-ph.CO · 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{NRGSJ4BP63XDUCRTNMDB6MTQM4}

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	2026-05-18T01:57:52.614288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c4d24f02ff6ee3a0a336b061f3270672aa84f16818658f80f7f20f7d11b7031

Aliases

arxiv: 1204.3089 · arxiv_version: 1204.3089v1 · doi: 10.48550/arxiv.1204.3089 · pith_short_12: NRGSJ4BP63XD · pith_short_16: NRGSJ4BP63XDUCRT · pith_short_8: NRGSJ4BP

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/NRGSJ4BP63XDUCRTNMDB6MTQM4 \
  | 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: 6c4d24f02ff6ee3a0a336b061f3270672aa84f16818658f80f7f20f7d11b7031

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d762b125a5fbbaeab902853c2492805a4c6b011697d2e301db7046e689fcdb3b",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-04-13T20:00:00Z",
    "title_canon_sha256": "3c784e4b9ebfaac76948a6c811cac0e61472fba33bebe45864d73109723b7c0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.3089",
    "kind": "arxiv",
    "version": 1
  }
}