Pith Number

pith:7TKXL55U

pith:1999:7TKXL55UWYR3YU3ILAHP2TN2LT

not attested not anchored not stored refs pending

Model Photospheres for Late-Type Stars from the Inversion of High-Resolution Spectroscopic Observations. Groombridge 1830 and Epsilon Eridani

(2) Instituto de Astrofisica de Canarias), Basilio Ruiz Cobo (2) ((1) McDonald Observatory, Carlos Allende Prieto (1), David L. Lambert (1), Department of Astronomy, Ramon J. Garcia Lopez (2), The University of Texas at Austin

arxiv:astro-ph/9907368 v1 · 1999-07-26 · 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{7TKXL55UWYR3YU3ILAHP2TN2LT}

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	2026-07-04T16:11:28.081985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcd575f7b4b623bc5368580efd4dba5cd97c3cd2f086fa3eedacd2cd9862cee5

Aliases

arxiv: astro-ph/9907368 · arxiv_version: astro-ph/9907368v1 · doi: 10.48550/arxiv.astro-ph/9907368 · pith_short_12: 7TKXL55UWYR3 · pith_short_16: 7TKXL55UWYR3YU3I · pith_short_8: 7TKXL55U

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/7TKXL55UWYR3YU3ILAHP2TN2LT \
  | 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: fcd575f7b4b623bc5368580efd4dba5cd97c3cd2f086fa3eedacd2cd9862cee5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18ce4f423f98d3646d498f1e787f105bf7253afb0c5f49b39821f8ee0e2b1ec4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-07-26T22:46:39Z",
    "title_canon_sha256": "27bb97bd77ce672914cfe0e6332158e03b3d1bf41bb9de3798b8338db58cb1bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9907368",
    "kind": "arxiv",
    "version": 1
  }
}