Pith Number

pith:H6IAKAJH

pith:2013:H6IAKAJHKXPHT4Y5NQNXUCZDPS

not attested not anchored not stored refs pending

The First Circumstellar Disk Imaged in Silhouette with Adaptive Optics: MagAO Imaging of Orion 218-354

Alfio Puglisi, Armando Riccardi, Derek Kopon, Enrico Pinna, Jared R. Males, Katherine B. Follette, Katie M. Morzinski, Laird M. Close, Marco Xompero, Philip Hinz, Runa Briguglio, Simone Esposito, Timothy J. Rodigas, Ya-Lin Wu

arxiv:1308.4147 v2 · 2013-08-19 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H6IAKAJHKXPHT4Y5NQNXUCZDPS}

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	2026-05-18T01:48:13.763337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f9005012755de79f31d6c1b7a0b237c929aac49a2fb75648a70be1bb4583f06

Aliases

arxiv: 1308.4147 · arxiv_version: 1308.4147v2 · doi: 10.48550/arxiv.1308.4147 · pith_short_12: H6IAKAJHKXPH · pith_short_16: H6IAKAJHKXPHT4Y5 · pith_short_8: H6IAKAJH

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/H6IAKAJHKXPHT4Y5NQNXUCZDPS \
  | 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: 3f9005012755de79f31d6c1b7a0b237c929aac49a2fb75648a70be1bb4583f06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eaa2a87007e0a0747ba0825afdc709e8e1ca0c4e86ccd3afc303f6774c45686d",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-08-19T20:00:07Z",
    "title_canon_sha256": "f0d65a5acf1f87a19b2dab4d59b7149a49a5f2616c381f73193084f8fec4f301"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4147",
    "kind": "arxiv",
    "version": 2
  }
}