Pith Number

pith:W535B75O

pith:2011:W535B75O2SAC57TTCG6LMJPPRW

not attested not anchored not stored refs pending

Implementation of a Parallel Tree Method on a GPU

Naohito Nakasato

arxiv:1112.4539 v1 · 2011-12-20 · astro-ph.IM · astro-ph.GA · cs.PF

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W535B75O2SAC57TTCG6LMJPPRW}

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	2026-05-18T04:05:58.623013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b777d0ffaed4802efe7311bcb625ef8d9d191278a0980a78c5ae1596287bc23c

Aliases

arxiv: 1112.4539 · arxiv_version: 1112.4539v1 · doi: 10.48550/arxiv.1112.4539 · pith_short_12: W535B75O2SAC · pith_short_16: W535B75O2SAC57TT · pith_short_8: W535B75O

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/W535B75O2SAC57TTCG6LMJPPRW \
  | 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: b777d0ffaed4802efe7311bcb625ef8d9d191278a0980a78c5ae1596287bc23c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c632e2aa180b06063f444be8020551c328aace9f3109f2fdd6f8ea94998cd24d",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "cs.PF"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-12-20T00:59:41Z",
    "title_canon_sha256": "ce83d8bfa7f34f7132073400129f152b6be142ebb8f936cf054f8794de3a550a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.4539",
    "kind": "arxiv",
    "version": 1
  }
}