Pith Number

pith:AZ2XWGMX

pith:2001:AZ2XWGMXZQ4NUGE7QNH2WX5OR6

not attested not anchored not stored refs pending

Calibration of the CH and CN Variations Among Main Sequence Stars in M71 and in M13

Judith G. Cohen, Michael M. Briley

arxiv:astro-ph/0104099 v1 · 2001-04-05 · 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{AZ2XWGMXZQ4NUGE7QNH2WX5OR6}

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	2026-07-04T16:22:59.977785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06757b1997cc38da189f834fab5fae8f854b00fde909a03251784cff56bdc534

Aliases

arxiv: astro-ph/0104099 · arxiv_version: astro-ph/0104099v1 · doi: 10.48550/arxiv.astro-ph/0104099 · pith_short_12: AZ2XWGMXZQ4N · pith_short_16: AZ2XWGMXZQ4NUGE7 · pith_short_8: AZ2XWGMX

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/AZ2XWGMXZQ4NUGE7QNH2WX5OR6 \
  | 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: 06757b1997cc38da189f834fab5fae8f854b00fde909a03251784cff56bdc534

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b207ad2a4cce05b7f0672b423d88fb3d6300b81a5d95519d1dc3a5dd81b2968c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-04-05T01:08:15Z",
    "title_canon_sha256": "931f12651db60141d49a9979af484af5e1fe10c2a45c2bae7288ec37db49cf48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0104099",
    "kind": "arxiv",
    "version": 1
  }
}