Pith Number

pith:I7NGSEIA

pith:1996:I7NGSEIAHVECSX4OR3UQY2HRIU

not attested not anchored not stored refs pending

A Robust Determination of the Time Delay in 0957+561A,B and a Measurement of the Global Value of Hubble's Constant

Caltech), Daniel C. Long (Apache Point Observ.), Edwin L. Turner, III, James E. Rhoads, Joachim Wambsganss (Astroph. Inst., J. Richard Gott, Karen A. Gloria, Louis E. Bergeron, Potsdam), Sangeeta Malhotra (IPAC), Tomislav Kundic (Th. Astroph., Wesley N. Colley, Yun Wang (Princeton)

arxiv:astro-ph/9610162 v2 · 1996-10-21 · 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{I7NGSEIAHVECSX4OR3UQY2HRIU}

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	2026-05-18T03:47:42.807666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47da6911003d48295f8e8ee90c68f1453bfbedd523f19c923fe3fb6bf4ac6fed

Aliases

arxiv: astro-ph/9610162 · arxiv_version: astro-ph/9610162v2 · doi: 10.48550/arxiv.astro-ph/9610162 · pith_short_12: I7NGSEIAHVEC · pith_short_16: I7NGSEIAHVECSX4O · pith_short_8: I7NGSEIA

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/I7NGSEIAHVECSX4OR3UQY2HRIU \
  | 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: 47da6911003d48295f8e8ee90c68f1453bfbedd523f19c923fe3fb6bf4ac6fed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "669dcb070bcb1bd8e47d5e99c4844ddc2e2f590fcb3479523899ac1550705dff",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1996-10-21T18:05:56Z",
    "title_canon_sha256": "b3371167c7c48e56cfee6fe1d4e563e04c437a5419e647e4e0b602971590caa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9610162",
    "kind": "arxiv",
    "version": 2
  }
}