Pith Number

pith:OG5YQNND

pith:1999:OG5YQNNDZG2HRF24Q62IA52K4H

not attested not anchored not stored refs pending

PROGRAPE-1: A Programmable, Multi-Purpose Computer for Many-Body Simulations

Atsushi Kawai, Junichiro Makino, Toshiyuki Fukushige, Tsuyoshi Hamada

arxiv:astro-ph/9906419 v2 · 1999-06-25 · 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{OG5YQNNDZG2HRF24Q62IA52K4H}

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	2026-05-18T01:40:12.982562Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71bb8835a3c9b478975c87b480774ae1e11102b5fe7bf2a7e0ca28dd67dffbc9

Aliases

arxiv: astro-ph/9906419 · arxiv_version: astro-ph/9906419v2 · doi: 10.48550/arxiv.astro-ph/9906419 · pith_short_12: OG5YQNNDZG2H · pith_short_16: OG5YQNNDZG2HRF24 · pith_short_8: OG5YQNND

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/OG5YQNNDZG2HRF24Q62IA52K4H \
  | 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: 71bb8835a3c9b478975c87b480774ae1e11102b5fe7bf2a7e0ca28dd67dffbc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77e6a76e7effecdba29136ca9a237af4cfb9c77b342721d9dbc86ba55d7659dc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-06-25T23:58:10Z",
    "title_canon_sha256": "b51f351a380b5e29d718c1ea1bf71d39ece5dbe8cbb2e200efa4bab5391aa322"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9906419",
    "kind": "arxiv",
    "version": 2
  }
}