Pith Number

pith:UUK25E52

pith:2002:UUK25E52ZVSCHGF5RRAC3WL3DX

not attested not anchored not stored refs pending

Constraining the difference in convective blueshift between the components of alpha Cen with precise radial velocities

A. J. Penny, B. D. Carter, C. G. Tinney, C. McCarthy, D. Kent, D. Nidever, D. Pourbaix, D. Ramm, F. Bouchy, F. Pepe, G. W. Marcy, H. R. A. Jones, J. B. Hearnshaw, J. Skuljan, R. P. Butler

arxiv:astro-ph/0202400 v1 · 2002-02-21 · 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{UUK25E52ZVSCHGF5RRAC3WL3DX}

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	2026-05-18T04:27:05.226325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a515ae93bacd642398bd8c402dd97b1dd727492f897305336d2e696cc1e963df

Aliases

arxiv: astro-ph/0202400 · arxiv_version: astro-ph/0202400v1 · doi: 10.48550/arxiv.astro-ph/0202400 · pith_short_12: UUK25E52ZVSC · pith_short_16: UUK25E52ZVSCHGF5 · pith_short_8: UUK25E52

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/UUK25E52ZVSCHGF5RRAC3WL3DX \
  | 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: a515ae93bacd642398bd8c402dd97b1dd727492f897305336d2e696cc1e963df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2eec9c42d977c3759428f1a4334ea1aeab4ada59ad8ce4a1d5839861817031f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-02-21T19:38:54Z",
    "title_canon_sha256": "66fb4bee02dd759d18c82391763d94f2a51057f6fd59a1dad2a4fbe924efa6df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0202400",
    "kind": "arxiv",
    "version": 1
  }
}