Pith Number

pith:Q5FNC4SM

pith:2003:Q5FNC4SMIG5FNGWKYWEYUZNNKA

not attested not anchored not stored refs pending

Time delay measurement of the lensed quasar HE1104-1805

Dan Maoz (Tel-Aviv U.), Eran O. Ofek

arxiv:astro-ph/0305200 v1 · 2003-05-12 · 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{Q5FNC4SMIG5FNGWKYWEYUZNNKA}

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	2026-07-04T16:37:07.587561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

874ad1724c41ba569acac5898a65ad501de516cb84628825ea6dd226c12adc50

Aliases

arxiv: astro-ph/0305200 · arxiv_version: astro-ph/0305200v1 · doi: 10.48550/arxiv.astro-ph/0305200 · pith_short_12: Q5FNC4SMIG5F · pith_short_16: Q5FNC4SMIG5FNGWK · pith_short_8: Q5FNC4SM

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/Q5FNC4SMIG5FNGWKYWEYUZNNKA \
  | 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: 874ad1724c41ba569acac5898a65ad501de516cb84628825ea6dd226c12adc50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a7c85f410a281847b3c45c5d59ba73154b87682a0ac7d528bdcc18d363672e6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-05-12T20:02:08Z",
    "title_canon_sha256": "da64ab2030b839d3f2b776d53ccb034f6a0e84e7011cf1fccbf64feeb9b74e1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0305200",
    "kind": "arxiv",
    "version": 1
  }
}