Pith Number

pith:2YB4BZLG

pith:2009:2YB4BZLGHTPDY325UYSVLHQSEP

not attested not anchored not stored refs pending

H_2O maser and a plasma obscuring torus in the radio galaxy NGC 1052

D. Namikawa, K. M. Shibata, K. Nakamura, M. Inoue, S. Kameno, S. Sawada-Satoh

arxiv:0902.4068 v1 · 2009-02-24 · 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{2YB4BZLGHTPDY325UYSVLHQSEP}

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	2026-05-18T04:37:22.736681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d603c0e5663cde3c6f5da625559e1223d6d5082e60426b816da59598404d11b6

Aliases

arxiv: 0902.4068 · arxiv_version: 0902.4068v1 · doi: 10.48550/arxiv.0902.4068 · pith_short_12: 2YB4BZLGHTPD · pith_short_16: 2YB4BZLGHTPDY325 · pith_short_8: 2YB4BZLG

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/2YB4BZLGHTPDY325UYSVLHQSEP \
  | 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: d603c0e5663cde3c6f5da625559e1223d6d5082e60426b816da59598404d11b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ceb7eea3bc85702f69ac0c5c223a6d790ca1b06c17cb4c0d23de40a91c95bfa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-24T06:02:31Z",
    "title_canon_sha256": "37b0c4b0d95496e3a4b9563a3eb683ab140dae67d62de9acd28cb9e0a272c46f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.4068",
    "kind": "arxiv",
    "version": 1
  }
}