Pith Number

pith:DDQ7HBXR

pith:2007:DDQ7HBXR2Z3H23OP2G3NEY5JES

not attested not anchored not stored refs pending

Magnetically Torqued Thin Accretion Disks

S. Rappaport, W. Kluzniak

arxiv:0709.2361 v2 · 2007-09-14 · astro-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDQ7HBXR2Z3H23OP2G3NEY5JES}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:49:09.505781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18e1f386f1d6767d6dcfd1b6d263a92480f63b1895d8364bf89423831ac6119b

Aliases

arxiv: 0709.2361 · arxiv_version: 0709.2361v2 · doi: 10.48550/arxiv.0709.2361 · pith_short_12: DDQ7HBXR2Z3H · pith_short_16: DDQ7HBXR2Z3H23OP · pith_short_8: DDQ7HBXR

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/DDQ7HBXR2Z3H23OP2G3NEY5JES \
  | 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: 18e1f386f1d6767d6dcfd1b6d263a92480f63b1895d8364bf89423831ac6119b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22216dc5d4220f05c1ee1801f289e1538053f4de51baf1403ea4ee5a30bfa27f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-09-14T18:42:59Z",
    "title_canon_sha256": "0d30f3aac14bb11ffafa50c4c964a3073d79508acc26f42c7f1fbba05dc54d30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.2361",
    "kind": "arxiv",
    "version": 2
  }
}