Pith Number

pith:TIQ4A46W

pith:1999:TIQ4A46WVZPKN3N4U32DR7F4ZA

not attested not anchored not stored refs pending

In Flight Determination of the Plate Scale of the EIT

C. E. DeForest, F. Auchere, G. Artzner

arxiv:astro-ph/9912213 v2 · 1999-12-09 · 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{TIQ4A46WVZPKN3N4U32DR7F4ZA}

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	2026-05-18T03:33:48.359605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a21c073d6ae5ea6edbca6f438fcbcc8009e4b6f2a7d71e837c68e55cc198851

Aliases

arxiv: astro-ph/9912213 · arxiv_version: astro-ph/9912213v2 · doi: 10.48550/arxiv.astro-ph/9912213 · pith_short_12: TIQ4A46WVZPK · pith_short_16: TIQ4A46WVZPKN3N4 · pith_short_8: TIQ4A46W

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/TIQ4A46WVZPKN3N4U32DR7F4ZA \
  | 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: 9a21c073d6ae5ea6edbca6f438fcbcc8009e4b6f2a7d71e837c68e55cc198851

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30fd91feb2633821aede7a92399cde6e0d1b9ca4e5f3d90cbfc9b56c7d57b707",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-09T23:56:24Z",
    "title_canon_sha256": "da3d4fb45f6a63f3cf51542e2ca10a137fb8a541e190c0613f8306bb3a0fd4db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912213",
    "kind": "arxiv",
    "version": 2
  }
}