Pith Number

pith:Q6FP777T

pith:1995:Q6FP777TROSNLFENPJ6BOQ6FYL

not attested not anchored not stored refs pending

The light curve and the time delay of QSO 0957+561

Jaan Pelt, Rainer Kayser, Sjur Refsdal, Thomas Schramm

arxiv:astro-ph/9501036 v1 · 1995-01-11 · 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{Q6FP777TROSNLFENPJ6BOQ6FYL}

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.

Cited by

1 paper in Pith

Global structure of the time delay likelihood

Receipt and verification

First computed	2026-05-18T01:07:42.735742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

878afffff38ba4d5948d7a7c1743c5c2f6503aa82e5604495e8d0848b006fd13

Aliases

arxiv: astro-ph/9501036 · arxiv_version: astro-ph/9501036v1 · doi: 10.48550/arxiv.astro-ph/9501036 · pith_short_12: Q6FP777TROSN · pith_short_16: Q6FP777TROSNLFEN · pith_short_8: Q6FP777T

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/Q6FP777TROSNLFENPJ6BOQ6FYL \
  | 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: 878afffff38ba4d5948d7a7c1743c5c2f6503aa82e5604495e8d0848b006fd13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "634fb3975aac679b2935446b127ad443d9aa51e36e21eb8c5d128854c3e61244",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-01-11T12:41:15Z",
    "title_canon_sha256": "beee95c569918e7926a6364a7c58433f8c10d123bf5042c889255e4b64922332"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9501036",
    "kind": "arxiv",
    "version": 1
  }
}