Pith Number

pith:RZHBO4WA

pith:2011:RZHBO4WA2WYNBNWXC36NLMOIZK

not attested not anchored not stored refs pending

The unusual protoplanetary disk around the T Tauri star ET Cha

A. Brown, A. Mora, A.-Ran Lyo, B. Riaz, E. Bergin, F. Menard, G. Aresu, G. Duchene, G. J. Herczeg, G. Sandell, I. de Gregorio-Monsalvo, I. Kamp, I. Pascucci, N. Phillips, P. Woitke, S. Brittain, W.-F. Thi, W. R. F. Dent

arxiv:1103.5309 v1 · 2011-03-28 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RZHBO4WA2WYNBNWXC36NLMOIZK}

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	2026-05-18T02:02:44.330152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e4e1772c0d5b0d0b6d716fcd5b1c8ca961f5f8cedacfb64f4141ea2d4a3e412

Aliases

arxiv: 1103.5309 · arxiv_version: 1103.5309v1 · doi: 10.48550/arxiv.1103.5309 · pith_short_12: RZHBO4WA2WYN · pith_short_16: RZHBO4WA2WYNBNWX · pith_short_8: RZHBO4WA

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/RZHBO4WA2WYNBNWXC36NLMOIZK \
  | 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: 8e4e1772c0d5b0d0b6d716fcd5b1c8ca961f5f8cedacfb64f4141ea2d4a3e412

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e43786180d4a410713ab8d5b7249f1a21eb9533cb638a2d643f846d06342620a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-03-28T09:55:03Z",
    "title_canon_sha256": "cb3b6ea726832237f7b2c53ae9ef972a8d2dc72de0a75ee092458ed4287d2d54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.5309",
    "kind": "arxiv",
    "version": 1
  }
}