Pith Number

pith:ENOQI476

pith:2001:ENOQI476OY6ENGSRVWW4S6JUO3

not attested not anchored not stored refs pending

'Round the Clock Observations of the Q0957+561 A,B Gravitationally Lensed Quasar

Alexander Zheleznyak (see text for affiliations), Alex Oscoz, Cristina Abajas, Dan Maoz, David Alcalde, Evencio Mediavilla, Hyun Ju Lee, Igor Sinelnikov, Irek Khamitov, Jan Teuber, Javier Licandro, Jonghwan Lee, Jose Munoz, Kjetil Kjernsmo, Miquel Serra-Ricart, Myung Gyoon Lee, Rafael Barrena, Rolf Stabell, Rudolph E. Schild, Veronica Motta, Vladimir Dudinov, Wesley N. Colley, Zeki Aslan

arxiv:astro-ph/0103146 v1 · 2001-03-09 · 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{ENOQI476OY6ENGSRVWW4S6JUO3}

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	2026-07-04T16:22:51.107497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

235d0473fe763c469a51adadc9793476e05d05d08a5b63d7da7f02ec36bc0164

Aliases

arxiv: astro-ph/0103146 · arxiv_version: astro-ph/0103146v1 · doi: 10.48550/arxiv.astro-ph/0103146 · pith_short_12: ENOQI476OY6E · pith_short_16: ENOQI476OY6ENGSR · pith_short_8: ENOQI476

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/ENOQI476OY6ENGSRVWW4S6JUO3 \
  | 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: 235d0473fe763c469a51adadc9793476e05d05d08a5b63d7da7f02ec36bc0164

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f1560ef70b4bce2f981ebdaefb87a05fd49a9fdabe5c83ceca894184ef7c969",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-03-09T14:33:55Z",
    "title_canon_sha256": "71e5a27166de2d3d1e078b00ec9b0ad17b1d3ef9374131d706f20e5e7a1da3a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0103146",
    "kind": "arxiv",
    "version": 1
  }
}