Pith Number

pith:Y5NBYMOT

pith:2009:Y5NBYMOTCDVDBAPZQJMVNQUKQX

not attested not anchored not stored refs pending

An Exact Integration Scheme for Radiative Cooling in Hydrodynamical Simulations

R. H. D. Townsend

arxiv:0901.3146 v2 · 2009-01-20 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y5NBYMOTCDVDBAPZQJMVNQUKQX}

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	2026-07-04T17:14:16.175693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c75a1c31d310ea3081f9825956c28a85d1b53215d55e00422196fae29ffda319

Aliases

arxiv: 0901.3146 · arxiv_version: 0901.3146v2 · doi: 10.48550/arxiv.0901.3146 · pith_short_12: Y5NBYMOTCDVD · pith_short_16: Y5NBYMOTCDVDBAPZ · pith_short_8: Y5NBYMOT

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/Y5NBYMOTCDVDBAPZQJMVNQUKQX \
  | 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: c75a1c31d310ea3081f9825956c28a85d1b53215d55e00422196fae29ffda319

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2cd2431f25675e69004f22fb0030cd92f3dbcbfbdd4cf00be4c892e93a1ec42",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-20T21:03:17Z",
    "title_canon_sha256": "9d76ea1c89b7e3b57e59703eb539c6fc5207d955d361eef57df8574f485ddd00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3146",
    "kind": "arxiv",
    "version": 2
  }
}