Pith Number

pith:PE4AAS56

pith:2013:PE4AAS563AGZILCEAUMKXOMCAK

not attested not anchored not stored refs pending

An Old Disk That Can Still Form a Planetary System

Chunhua Qi, Colette Salyk, Edwin A. Bergin, Ewine F. van Dishoeck, Geoffrey A. Blake, Joel D. Green, Karin Oberg, Ke Zhang, Klaus Pontoppidan, L. Ilsedore Cleeves, Neal J. Evans II, Sean M. Andrews, Thomas Henning, Uma Gorti

arxiv:1303.1107 v1 · 2013-03-05 · 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{PE4AAS563AGZILCEAUMKXOMCAK}

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	2026-07-04T23:57:44.179580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7938004bbed80d942c440518abb982029d43911c711d1069f72b72516f9b45e4

Aliases

arxiv: 1303.1107 · arxiv_version: 1303.1107v1 · doi: 10.48550/arxiv.1303.1107 · pith_short_12: PE4AAS563AGZ · pith_short_16: PE4AAS563AGZILCE · pith_short_8: PE4AAS56

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/PE4AAS563AGZILCEAUMKXOMCAK \
  | 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: 7938004bbed80d942c440518abb982029d43911c711d1069f72b72516f9b45e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a4695fb35737981a11191eb8368cd7a2abaa039efe417e444dcd92564c639bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-03-05T17:16:23Z",
    "title_canon_sha256": "c0a1a3d3ea0de4421a731681da0b98f335f646ad0b72333657e6353b09695c42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1107",
    "kind": "arxiv",
    "version": 1
  }
}