Pith Number

pith:HKX6E5PS

pith:1999:HKX6E5PSHONXK7JCL2RLVO4LXD

not attested not anchored not stored refs pending

Can Mira Variables Tell us the Chemical Abundances in Stellar Systems?

Michael Feast, Patricia Whitelock

arxiv:astro-ph/9911393 v1 · 1999-11-20 · 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{HKX6E5PSHONXK7JCL2RLVO4LXD}

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	2026-05-18T01:21:49.778495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3aafe275f23b9b757d225ea2babb8bb8fb9aeb5492404b673294af689c357354

Aliases

arxiv: astro-ph/9911393 · arxiv_version: astro-ph/9911393v1 · doi: 10.48550/arxiv.astro-ph/9911393 · pith_short_12: HKX6E5PSHONX · pith_short_16: HKX6E5PSHONXK7JC · pith_short_8: HKX6E5PS

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/HKX6E5PSHONXK7JCL2RLVO4LXD \
  | 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: 3aafe275f23b9b757d225ea2babb8bb8fb9aeb5492404b673294af689c357354

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9f6bc876e2a67bac30acf04dfc6cf19de51f2ff5b35248fdf2c63f83ceea81e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-20T08:58:46Z",
    "title_canon_sha256": "9154b28e0495b0e17252ad67753774c19a1f8aecb94679828ae691a51464eccc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911393",
    "kind": "arxiv",
    "version": 1
  }
}