Pith Number

pith:T4PAW6ZU

pith:2009:T4PAW6ZUVY457W34XHIVYWHPED

not attested not anchored not stored refs pending

A Galaxy Merger Scenario for the NGC 1550 Galaxy from Metal Distributions in the X-ray Emitting Plasma

2), (2) Tokyo University, (3) Tokyo University of Science, (4) Hiroshima University), Kazuhiro Nakazawa (2), Kazuo Makishima (1, Kyoko Matsushita (3), Madoka Kawaharada (1), Sho Okuyama (2), Takao Kitaguchi (2), Yasushi Fukazawa (4) ((1) RIKEN

arxiv:0901.4626 v1 · 2009-01-29 · 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{T4PAW6ZUVY457W34XHIVYWHPED}

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	2026-05-18T04:29:16.998661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f1e0b7b34ae39dfdb7cb9d15c58ef20c4178a1d4f6db5cf27c4d43d41f62392

Aliases

arxiv: 0901.4626 · arxiv_version: 0901.4626v1 · doi: 10.48550/arxiv.0901.4626 · pith_short_12: T4PAW6ZUVY45 · pith_short_16: T4PAW6ZUVY457W34 · pith_short_8: T4PAW6ZU

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/T4PAW6ZUVY457W34XHIVYWHPED \
  | 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: 9f1e0b7b34ae39dfdb7cb9d15c58ef20c4178a1d4f6db5cf27c4d43d41f62392

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1ca20c2152539c3f73364a7637365fa43ce05097be7a5b29375bf39fef71a51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-29T10:03:25Z",
    "title_canon_sha256": "16817d4ea8ca2b05ffc8e0f7d6805cf89f3420122295b1c8c6d3cb34eee0a5e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4626",
    "kind": "arxiv",
    "version": 1
  }
}