Pith Number

pith:OQY4QFHB

pith:2013:OQY4QFHBCJFP77SFXNQ5IW6RYJ

not attested not anchored not stored refs pending

Gravitational lens system B0218+357: constraints on lens model and Hubble constant

2 - Space Research Institute, A.A. Lutovinov (2), Moscow, N.S. Lyskova (2) (1 - ASC of P.N.Lebedev Physical Institute, Russia, Russia), T.I. Larchenkova (1)

arxiv:1310.3211 v1 · 2013-10-11 · astro-ph.CO · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OQY4QFHBCJFP77SFXNQ5IW6RYJ}

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	2026-05-18T03:10:44.629502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7431c814e1124afffe45bb61d45bd1c2591db71f71085046f1a94d06cc6fd5c7

Aliases

arxiv: 1310.3211 · arxiv_version: 1310.3211v1 · doi: 10.48550/arxiv.1310.3211 · pith_short_12: OQY4QFHBCJFP · pith_short_16: OQY4QFHBCJFP77SF · pith_short_8: OQY4QFHB

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/OQY4QFHBCJFP77SFXNQ5IW6RYJ \
  | 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: 7431c814e1124afffe45bb61d45bd1c2591db71f71085046f1a94d06cc6fd5c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1fef6b656349a7971839a19ba21026d6d306fba0e5acc245d4278eac6080801",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-11T17:31:54Z",
    "title_canon_sha256": "4a5e9284634f317ecf18d73d1b9b9be85412ceaffdf154f138a445884c5c8832"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.3211",
    "kind": "arxiv",
    "version": 1
  }
}