Pith Number

pith:USG6KZ6S

pith:1997:USG6KZ6SR4QD23CI5BO2Y5A3M2

not attested not anchored not stored refs pending

Astronomical Research with liquid mirror telescopes

E. F. Borra

arxiv:astro-ph/9706108 v1 · 1997-06-11 · 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{USG6KZ6SR4QD23CI5BO2Y5A3M2}

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	2026-07-04T14:15:09.489558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a48de567d28f203d6c48e85dac741b669df50b7380d9a1e070ccbb1382ca150b

Aliases

arxiv: astro-ph/9706108 · arxiv_version: astro-ph/9706108v1 · doi: 10.48550/arxiv.astro-ph/9706108 · pith_short_12: USG6KZ6SR4QD · pith_short_16: USG6KZ6SR4QD23CI · pith_short_8: USG6KZ6S

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/USG6KZ6SR4QD23CI5BO2Y5A3M2 \
  | 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: a48de567d28f203d6c48e85dac741b669df50b7380d9a1e070ccbb1382ca150b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee47a70d6c52b4c93059f6ad994341e6e8df0f3104326e1c20cc483451cb6ae4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-06-11T14:36:36Z",
    "title_canon_sha256": "9c121f27b4cb8e6b5584927ad41248bae1f52355597dcefc2fdac8f164df2c32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9706108",
    "kind": "arxiv",
    "version": 1
  }
}