Pith Number

pith:MAV4HUV2

pith:1998:MAV4HUV2ESJKXSKWOQEULDKKSO

not attested not anchored not stored refs pending

Planetary Companions Around Two Solar Type Stars: HD 195019 and HD 217107

D.A. Fischer, G.W. Marcy, K. Apps, R.P. Butler, S.S. Vogt

arxiv:astro-ph/9810420 v1 · 1998-10-26 · 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{MAV4HUV2ESJKXSKWOQEULDKKSO}

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	2026-05-18T01:07:36.957025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

602bc3d2ba2492abc9567409458d4a9394c3dd51a63dcc0c9c27cc505e20f6c0

Aliases

arxiv: astro-ph/9810420 · arxiv_version: astro-ph/9810420v1 · doi: 10.48550/arxiv.astro-ph/9810420 · pith_short_12: MAV4HUV2ESJK · pith_short_16: MAV4HUV2ESJKXSKW · pith_short_8: MAV4HUV2

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/MAV4HUV2ESJKXSKWOQEULDKKSO \
  | 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: 602bc3d2ba2492abc9567409458d4a9394c3dd51a63dcc0c9c27cc505e20f6c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0515132324dc4c89767cf89463e5c689b4109080d3f66133b65e137ee14c9d9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-10-26T21:22:27Z",
    "title_canon_sha256": "5d69fd0cb5c5440befec484f605068651f13edae55e3957b372e8fc1a7584c19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9810420",
    "kind": "arxiv",
    "version": 1
  }
}