Pith Number

pith:HWCU6ZVM

pith:2011:HWCU6ZVMMNPKI3KIQETNJT2FEP

not attested not anchored not stored refs pending

Emission Lines from the Gas Disk around TW Hydra and the Origin of the Inner Hole

David Hollenbach, Ilaria Pascucci, Joan Najita, Uma Gorti

arxiv:1104.4806 v1 · 2011-04-25 · 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{HWCU6ZVMMNPKI3KIQETNJT2FEP}

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	2026-05-18T02:02:15.228813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d854f66ac635ea46d488126d4cf4523ea4df74244f7729f9f486b88af2d5dff

Aliases

arxiv: 1104.4806 · arxiv_version: 1104.4806v1 · doi: 10.48550/arxiv.1104.4806 · pith_short_12: HWCU6ZVMMNPK · pith_short_16: HWCU6ZVMMNPKI3KI · pith_short_8: HWCU6ZVM

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/HWCU6ZVMMNPKI3KIQETNJT2FEP \
  | 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: 3d854f66ac635ea46d488126d4cf4523ea4df74244f7729f9f486b88af2d5dff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8f5e4bc32e4be73d6c7c48fdf7cde249bb412ea67e1ae383ecdb11ec790d702",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-04-25T20:36:24Z",
    "title_canon_sha256": "562ab49bd41015d5a9a01ff010ccd54db37cfa5b4140ec128c3c1e9a80b6d70e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.4806",
    "kind": "arxiv",
    "version": 1
  }
}