Pith Number

pith:AJC5RLMD

pith:2009:AJC5RLMDNDPBGWAGVB4FTRA3LJ

not attested not anchored not stored refs pending

Massive Protoplanetary Disks in Orion Beyond the Trapezium Cluster

Jonathan P. Williams, Rita K. Mann

arxiv:0906.1400 v1 · 2009-06-08 · astro-ph.SR · 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{AJC5RLMDNDPBGWAGVB4FTRA3LJ}

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	2026-05-18T04:29:42.795079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0245d8ad8368de135806a87859c41b5a4285f5faa505a047d76085c478f21892

Aliases

arxiv: 0906.1400 · arxiv_version: 0906.1400v1 · doi: 10.48550/arxiv.0906.1400 · pith_short_12: AJC5RLMDNDPB · pith_short_16: AJC5RLMDNDPBGWAG · pith_short_8: AJC5RLMD

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/AJC5RLMDNDPBGWAGVB4FTRA3LJ \
  | 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: 0245d8ad8368de135806a87859c41b5a4285f5faa505a047d76085c478f21892

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96204c1efa0a7f2f0f10df706087925d29594319044e945365484659f97d4702",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-06-08T01:13:11Z",
    "title_canon_sha256": "97ab63e9d91c4213d22a17bf6b4f5f8581995fcf807e3ac52e88dec9c862b3c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1400",
    "kind": "arxiv",
    "version": 1
  }
}