Pith Number

pith:P6IPB57F

pith:2007:P6IPB57FTYWVLYBFC45IGRP4RW

not attested not anchored not stored refs pending

A new algorithm for modelling photoionising radiation in smoothed particle hydrodynamics

Barbara Ercolano, Cathie Clarke, James Dale

arxiv:0705.3396 v1 · 2007-05-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P6IPB57FTYWVLYBFC45IGRP4RW}

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	2026-05-18T02:16:30.737255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f90f0f7e59e2d55e025173a8345fc8dae46255e6b45d8340c3aa2dc67a6ff85

Aliases

arxiv: 0705.3396 · arxiv_version: 0705.3396v1 · doi: 10.48550/arxiv.0705.3396 · pith_short_12: P6IPB57FTYWV · pith_short_16: P6IPB57FTYWVLYBF · pith_short_8: P6IPB57F

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/P6IPB57FTYWVLYBFC45IGRP4RW \
  | 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: 7f90f0f7e59e2d55e025173a8345fc8dae46255e6b45d8340c3aa2dc67a6ff85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67e97c026a8f55d98bc67bd3129c9bfb61528a683294beafb34790fb697b41b2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-05-23T15:24:13Z",
    "title_canon_sha256": "c60651195c656bf3713dad9059d4309e15029e463ed26ef5b6ea004f724d68b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0705.3396",
    "kind": "arxiv",
    "version": 1
  }
}