Pith Number

pith:3J6MWYCY

pith:2000:3J6MWYCYCEZPG4CX4G6ENYPEMA

not attested not anchored not stored refs pending

Atomic diffusion in metal poor stars. The influence on the Main Sequence fitting distance scale, subdwarfs ages and the value of Delta Y/DeltaZ

A. Weiss (MPA, Garching), M.A.T. Groenewegen, M. Salaris (Liverpool John Moores University)

arxiv:astro-ph/0001386 v1 · 2000-01-21 · 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{3J6MWYCYCEZPG4CX4G6ENYPEMA}

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	2026-07-04T14:10:07.521808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da7ccb60581132f37057e1bc46e1e46027987d169cee359f1026724e4e6bc6b3

Aliases

arxiv: astro-ph/0001386 · arxiv_version: astro-ph/0001386v1 · doi: 10.48550/arxiv.astro-ph/0001386 · pith_short_12: 3J6MWYCYCEZP · pith_short_16: 3J6MWYCYCEZPG4CX · pith_short_8: 3J6MWYCY

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/3J6MWYCYCEZPG4CX4G6ENYPEMA \
  | 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: da7ccb60581132f37057e1bc46e1e46027987d169cee359f1026724e4e6bc6b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "868acba946b9bd93a58c621abd044459052a90ed3ae773fdc4ea849e1d0f8969",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-01-21T19:38:41Z",
    "title_canon_sha256": "3587842ca3779498704750c2320848a6a881146bb94803331a253b4ad1c11f7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0001386",
    "kind": "arxiv",
    "version": 1
  }
}