Pith Number

pith:32HOKCFG

pith:2018:32HOKCFG3QVPIURYVBFW7C5MBJ

not attested not anchored not stored refs pending

Perspectives on Reproducibility and Sustainability of Open-Source Scientific Software from Seven Years of the Dedalus Project

Benjamin P. Brown, Daniel Lecoanet, Geoffrey M. Vasil, Jeffrey S. Oishi, Keaton J. Burns

arxiv:1801.08200 v1 · 2018-01-24 · astro-ph.IM · physics.comp-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{32HOKCFG3QVPIURYVBFW7C5MBJ}

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	2026-05-18T00:25:06.858183Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de8ee508a6dc2af45238a84b6f8bac0a4c45270a4559a2efee71a13fd135c0ed

Aliases

arxiv: 1801.08200 · arxiv_version: 1801.08200v1 · doi: 10.48550/arxiv.1801.08200 · pith_short_12: 32HOKCFG3QVP · pith_short_16: 32HOKCFG3QVPIURY · pith_short_8: 32HOKCFG

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/32HOKCFG3QVPIURYVBFW7C5MBJ \
  | 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: de8ee508a6dc2af45238a84b6f8bac0a4c45270a4559a2efee71a13fd135c0ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a55757750d7fe85f128222e3ef153bd538648497ad0debe9a7ef36bc6c9a71b",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-01-24T21:17:46Z",
    "title_canon_sha256": "bdd8d62ca7e08059aead3c6089bf7ed79778aef8b85eaca269c79c941be12258"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.08200",
    "kind": "arxiv",
    "version": 1
  }
}