Pith Number

pith:W2UYQANY

pith:1998:W2UYQANY7IYGKLIFZ5NLPZQVG4

not attested not anchored not stored refs pending

A quest for weak objects and for invisible stars

Moscow), S.I.Blinnikov (ITEP

arxiv:astro-ph/9801015 v1 · 1998-01-04 · 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{W2UYQANY7IYGKLIFZ5NLPZQVG4}

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	2026-07-04T14:15:36.992470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6a98801b8fa30652d05cf5ab7e61537261476746e87c284ffbbf8c478321bfe

Aliases

arxiv: astro-ph/9801015 · arxiv_version: astro-ph/9801015v1 · doi: 10.48550/arxiv.astro-ph/9801015 · pith_short_12: W2UYQANY7IYG · pith_short_16: W2UYQANY7IYGKLIF · pith_short_8: W2UYQANY

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/W2UYQANY7IYGKLIFZ5NLPZQVG4 \
  | 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: b6a98801b8fa30652d05cf5ab7e61537261476746e87c284ffbbf8c478321bfe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "142e25a2c66d8c96b4f3e43dd156e43c7391c09599fa99a930658ed196ddbff8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-01-04T16:51:21Z",
    "title_canon_sha256": "f0e516314d39584d1a04cc7d241c0e9fdccd28141a628ea68fe8952ef3d1a4d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9801015",
    "kind": "arxiv",
    "version": 1
  }
}