Pith Number

pith:SIYA3KTX

pith:1998:SIYA3KTX2UVFS7KAGDNRLASNCE

not attested not anchored not stored refs pending

Optimal proper motion measurements with the Wide Field and Planetary Camera

Geraint Lewis, Rodrigo Ibata

arxiv:astro-ph/9809070 v1 · 1998-09-07 · 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{SIYA3KTX2UVFS7KAGDNRLASNCE}

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	2026-05-18T01:40:13.726860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92300daa77d52a597d4030db15824d112a083fb9367084be6b244a9204c52727

Aliases

arxiv: astro-ph/9809070 · arxiv_version: astro-ph/9809070v1 · doi: 10.48550/arxiv.astro-ph/9809070 · pith_short_12: SIYA3KTX2UVF · pith_short_16: SIYA3KTX2UVFS7KA · pith_short_8: SIYA3KTX

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/SIYA3KTX2UVFS7KAGDNRLASNCE \
  | 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: 92300daa77d52a597d4030db15824d112a083fb9367084be6b244a9204c52727

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bf4495d19e9d161469427e047644c99ee2e4f2e3779d2031eede8df8b4b6382",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-09-07T00:06:42Z",
    "title_canon_sha256": "c7cf1fc071fa680edc859b94ab2e801a0419b072a67209758c2f0ef6f09723ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9809070",
    "kind": "arxiv",
    "version": 1
  }
}