Pith Number

pith:E4U2KG6Y

pith:2017:E4U2KG6YMNQZDQBPJVWWVGJUQG

not attested not anchored not stored refs pending

GANDALF - Graphical Astrophysics code for N-body Dynamics And Lagrangian Fluids

David A. Hubber, Giovanni P. Rosotti, Richard A. Booth

arxiv:1709.04488 v1 · 2017-09-13 · 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{E4U2KG6YMNQZDQBPJVWWVGJUQG}

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	2026-05-18T00:31:11.605846Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2729a51bd8636191c02f4d6d6a993481a6d49e1f9e7f1e9cd49a315271a199bd

Aliases

arxiv: 1709.04488 · arxiv_version: 1709.04488v1 · doi: 10.48550/arxiv.1709.04488 · pith_short_12: E4U2KG6YMNQZ · pith_short_16: E4U2KG6YMNQZDQBP · pith_short_8: E4U2KG6Y

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/E4U2KG6YMNQZDQBPJVWWVGJUQG \
  | 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: 2729a51bd8636191c02f4d6d6a993481a6d49e1f9e7f1e9cd49a315271a199bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29dfb41a770abdf0b89462d90d5d209cf21b69946b914a52730938a2b3f4a198",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-09-13T18:10:08Z",
    "title_canon_sha256": "be29993e90ac7beecd0e513147535858e0edd0cec92a41b619b70674cfc040ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.04488",
    "kind": "arxiv",
    "version": 1
  }
}