Pith Number

pith:BIRS4S7K

pith:2009:BIRS4S7K4A6JFOSRNWFPS6E6LU

not attested not anchored not stored refs pending

GAMER: a GPU-Accelerated Adaptive Mesh Refinement Code for Astrophysics

Hsi-Yu Schive, Tzihong Chiueh, Yu-Chih Tsai

arxiv:0907.3390 v2 · 2009-07-20 · astro-ph.IM · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BIRS4S7K4A6JFOSRNWFPS6E6LU}

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	2026-07-04T17:21:27.230802Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a232e4beae03c92ba516d8af9789e5d2f7f74effb2c537bb3dac7727d92e1ea

Aliases

arxiv: 0907.3390 · arxiv_version: 0907.3390v2 · doi: 10.48550/arxiv.0907.3390 · pith_short_12: BIRS4S7K4A6J · pith_short_16: BIRS4S7K4A6JFOSR · pith_short_8: BIRS4S7K

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/BIRS4S7K4A6JFOSRNWFPS6E6LU \
  | 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: 0a232e4beae03c92ba516d8af9789e5d2f7f74effb2c537bb3dac7727d92e1ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7424275726fe743e61bbaeebc5a772195fe1b709920eadd7bdd950bc705f0b39",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-07-20T13:16:53Z",
    "title_canon_sha256": "215d74b3f83573393332f5c558eb8bd2377d0e8050abc863ba4912e304cd1e2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3390",
    "kind": "arxiv",
    "version": 2
  }
}