Pith Number

pith:R4DFDQJY

pith:2012:R4DFDQJYXQUEAYDX5BBRKDINCY

not attested not anchored not stored refs pending

Viscous accretion of a polytropic self-gravitating disk in the presence of wind

Erfan Nourbakhsh, Mohsen Shadmehri, Shahram Abbassi

arxiv:1210.0470 v2 · 2012-10-01 · 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{R4DFDQJYXQUEAYDX5BBRKDINCY}

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	2026-05-18T01:54:11.972949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f0651c138bc28406077e843150d0d163487f6f6a9ffc6cc1a74666419273b3f

Aliases

arxiv: 1210.0470 · arxiv_version: 1210.0470v2 · doi: 10.48550/arxiv.1210.0470 · pith_short_12: R4DFDQJYXQUE · pith_short_16: R4DFDQJYXQUEAYDX · pith_short_8: R4DFDQJY

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/R4DFDQJYXQUEAYDX5BBRKDINCY \
  | 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: 8f0651c138bc28406077e843150d0d163487f6f6a9ffc6cc1a74666419273b3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cbdda503a76bc8c4abe57f3b27db70b8ddd599c37b7551368f1138fc760a09f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-10-01T16:55:50Z",
    "title_canon_sha256": "c1bd6b6bb25f800b3fadaccca6f071e7f7550406dcd8b441dea0c069f5608538"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.0470",
    "kind": "arxiv",
    "version": 2
  }
}