Pith Number

pith:LJYXT5CJ

pith:1999:LJYXT5CJ47T5HHHS5FGABSV47G

not attested not anchored not stored refs pending

RC J1148+0455 identification: gravitational lens or group of galaxies ?

A.Fletcher (2), A.I. Kopylov (1), A.V. Temirova (1), B. Burke (2) ((1) Special Astrophysical Observatory of Russian Academy of Sciences; (2) Massachusetts Institute of Technology, J.Winn (2), N.S. Soboleva (1), O.P. Zhelenkova (1), O.V. Verkhodanov (1), USA), Yu.N. Parijskij (1)

arxiv:astro-ph/9912499 v1 · 1999-12-23 · 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{LJYXT5CJ47T5HHHS5FGABSV47G}

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	2026-05-18T01:07:35.671263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a7179f449e7e7d39cf2e94c00cabcf994b9311a8d9e975781575e8028ec49c7

Aliases

arxiv: astro-ph/9912499 · arxiv_version: astro-ph/9912499v1 · doi: 10.48550/arxiv.astro-ph/9912499 · pith_short_12: LJYXT5CJ47T5 · pith_short_16: LJYXT5CJ47T5HHHS · pith_short_8: LJYXT5CJ

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/LJYXT5CJ47T5HHHS5FGABSV47G \
  | 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: 5a7179f449e7e7d39cf2e94c00cabcf994b9311a8d9e975781575e8028ec49c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff35cc0facf654518e8d795776a8aeddf6aa1f7ea5412244062da8a341235d29",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-23T16:21:31Z",
    "title_canon_sha256": "3a73dfe58d933353024b1645a224c424bacfbd3b92fbe725bdd300d601ac8294"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912499",
    "kind": "arxiv",
    "version": 1
  }
}