Pith Number

pith:7NJGJ4E7

pith:2011:7NJGJ4E7MTGKWTCZJWLPYUKNNK

not attested not anchored not stored refs pending

The Relationship between Accretion Disc Age and Stellar Age and its Consequences for Proto-Stellar Discs

Jim Pringle, Michael Jones, Richard Alexander

arxiv:1109.0276 v1 · 2011-09-01 · 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{7NJGJ4E7MTGKWTCZJWLPYUKNNK}

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	2026-05-18T02:00:43.092082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb5264f09f64ccab4c594d96fc514d6abb5f8da258893582d7c33907a2c1fad4

Aliases

arxiv: 1109.0276 · arxiv_version: 1109.0276v1 · doi: 10.48550/arxiv.1109.0276 · pith_short_12: 7NJGJ4E7MTGK · pith_short_16: 7NJGJ4E7MTGKWTCZ · pith_short_8: 7NJGJ4E7

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/7NJGJ4E7MTGKWTCZJWLPYUKNNK \
  | 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: fb5264f09f64ccab4c594d96fc514d6abb5f8da258893582d7c33907a2c1fad4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7226b1489630692fe745431c0454b29d3e4de6bcc7bf9933b916e5b45db1e72a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-09-01T19:59:03Z",
    "title_canon_sha256": "bda08e60a2d713640f5cd80a0f806523a70d947971b5b9d45c8347729cba51d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0276",
    "kind": "arxiv",
    "version": 1
  }
}