Pith Number

pith:YPAPAED2

pith:1998:YPAPAED27WBTK3YX5JJIM4YKLI

not attested not anchored not stored refs pending

Optical and CO Radio Observations of Poor Cluster Zwicky 1615.8+3505

(2) Okayama Astrophysical Observatory, (3) Kyoto University, (4) University of Tokyo, A. Tomita (1), H. Maehara (2), Japan, Japan), K. Nakanishi (3), M. Honma (4), T.T. Takeuchi (3), Y. Sofue (4) ((1) Wakayama University, Y. Tutui (4)

arxiv:astro-ph/9807072 v3 · 1998-07-08 · 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{YPAPAED27WBTK3YX5JJIM4YKLI}

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	2026-05-18T01:40:13.921927Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3c0f0107afd83356f17ea5286730a5a3e418785df63065c4effff9be4acc49b

Aliases

arxiv: astro-ph/9807072 · arxiv_version: astro-ph/9807072v3 · doi: 10.48550/arxiv.astro-ph/9807072 · pith_short_12: YPAPAED27WBT · pith_short_16: YPAPAED27WBTK3YX · pith_short_8: YPAPAED2

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/YPAPAED27WBTK3YX5JJIM4YKLI \
  | 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: c3c0f0107afd83356f17ea5286730a5a3e418785df63065c4effff9be4acc49b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1fc12425806de3920872c4fc6734195fd454c37f6e3c46bb6ee5c197ae7dcd9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-08T09:39:11Z",
    "title_canon_sha256": "ef4ec63c456716aad9ee90be9a5ce1c7e79a5ccc2a6e882908a148632dd1063e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807072",
    "kind": "arxiv",
    "version": 3
  }
}