Pith Number

pith:VJZTWIOI

pith:2011:VJZTWIOIVOPZWG7HQAVQHT3NMB

not attested not anchored not stored refs pending

Numerical study of self-gravitating protoplanetary discs

Kazem Faghei

arxiv:1111.1937 v1 · 2011-11-08 · 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{VJZTWIOIVOPZWG7HQAVQHT3NMB}

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	2026-05-18T03:55:57.514414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa733b21c8ab9f9b1be7802b03cf6d60481a9d7986c65c3de8c4ebaa1f46544d

Aliases

arxiv: 1111.1937 · arxiv_version: 1111.1937v1 · doi: 10.48550/arxiv.1111.1937 · pith_short_12: VJZTWIOIVOPZ · pith_short_16: VJZTWIOIVOPZWG7H · pith_short_8: VJZTWIOI

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/VJZTWIOIVOPZWG7HQAVQHT3NMB \
  | 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: aa733b21c8ab9f9b1be7802b03cf6d60481a9d7986c65c3de8c4ebaa1f46544d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12b84ab9eee4f9a590e5ec078ed11b71304a366c19333b8362b67931b8079620",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-11-08T15:27:44Z",
    "title_canon_sha256": "523b761d3ec27d7f6786717763394f404003c77007d103d48af5a4df60e04c2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.1937",
    "kind": "arxiv",
    "version": 1
  }
}