Pith Number

pith:6OBGVNLE

pith:2017:6OBGVNLEZN3IHWVO57G3XEBT24

not attested not anchored not stored refs pending

A Spectroscopic Survey of the Fields of 28 Strong Gravitational Lenses: Implications for $H_0$

Ann I. Zabludoff, Charles R. Keeton, Ivelina G. Momcheva, K. Decker French, Kenneth C. Wong, Kurtis A. Williams, Michelle L. Wilson

arxiv:1710.09900 v1 · 2017-10-26 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6OBGVNLEZN3IHWVO57G3XEBT24}

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	2026-05-18T00:28:41.801031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3826ab564cb7683daaeefcdbb9033d70cb4e6a646caf9a19f742e2dbd8dccde

Aliases

arxiv: 1710.09900 · arxiv_version: 1710.09900v1 · doi: 10.48550/arxiv.1710.09900 · pith_short_12: 6OBGVNLEZN3I · pith_short_16: 6OBGVNLEZN3IHWVO · pith_short_8: 6OBGVNLE

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/6OBGVNLEZN3IHWVO57G3XEBT24 \
  | 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: f3826ab564cb7683daaeefcdbb9033d70cb4e6a646caf9a19f742e2dbd8dccde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "198b899d0f75da38e060e43603affbc64fb47e2a6906e31211a6ecabf133d34a",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-10-26T20:15:16Z",
    "title_canon_sha256": "6f032ad037efa8263a48dcb30badb7462ea6dec4e0bd3c439ca13f92d79ebcaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.09900",
    "kind": "arxiv",
    "version": 1
  }
}