Pith Number

pith:5B7Y6ZY3

pith:2013:5B7Y6ZY3XXTQV6UOLAKVBWQLSE

not attested not anchored not stored refs pending

Using Megamaser Disks to Probe Black Hole Accretion

Ai-Lei Sun (Princeton), Anil Seth (Utah), Cheng-Yu Kuo (ASIAA), Chien Y. Peng (GMTO), Christian Henkel (MPIfR, C. M. Violette Impellizzeri (ALMA), James A. Braatz (NRAO), Jenny E. Greene (Princeton), King Abdulaziz University), K. Y. Lo (NRAO), Mark den Brok (Utah)

arxiv:1304.4254 v2 · 2013-04-15 · 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{5B7Y6ZY3XXTQV6UOLAKVBWQLSE}

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	2026-05-18T01:50:32.475016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e87f8f671bbde70afa8e581550da0b9119cf8d638f8337c0692364168a974c64

Aliases

arxiv: 1304.4254 · arxiv_version: 1304.4254v2 · doi: 10.48550/arxiv.1304.4254 · pith_short_12: 5B7Y6ZY3XXTQ · pith_short_16: 5B7Y6ZY3XXTQV6UO · pith_short_8: 5B7Y6ZY3

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/5B7Y6ZY3XXTQV6UOLAKVBWQLSE \
  | 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: e87f8f671bbde70afa8e581550da0b9119cf8d638f8337c0692364168a974c64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4367c19bc23bd537642f7c70515f719a8232f6acf934bbf7a7ecac22e2f66b4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-15T20:14:07Z",
    "title_canon_sha256": "836e62238639483e4b34a286d0c07d6d9b4bcccb3f98a1058dd86586d7d49048"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4254",
    "kind": "arxiv",
    "version": 2
  }
}