Pith Number

pith:NIP73HTW

pith:2015:NIP73HTWEFTEQ5QZULCGJH7PLK

not attested not anchored not stored refs pending

Hot subdwarfs - Small stars marking important events in stellar evolution

S. Geier

arxiv:1503.01625 v1 · 2015-03-05 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NIP73HTWEFTEQ5QZULCGJH7PLK}

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	2026-05-18T01:35:49.016793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a1ffd9e762166487619a2c4649fef5a91e51bef0022163c31985d095b772683

Aliases

arxiv: 1503.01625 · arxiv_version: 1503.01625v1 · doi: 10.48550/arxiv.1503.01625 · pith_short_12: NIP73HTWEFTE · pith_short_16: NIP73HTWEFTEQ5QZ · pith_short_8: NIP73HTW

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/NIP73HTWEFTEQ5QZULCGJH7PLK \
  | 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: 6a1ffd9e762166487619a2c4649fef5a91e51bef0022163c31985d095b772683

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "798e81e0ea2cd935a0501e62727ca2c98f52be89709633b9a37cdde216ad1088",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-03-05T12:40:20Z",
    "title_canon_sha256": "6570e26516b398111b6258a65beccfbdbbc00568f78ba4ce99047f5422e72eef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01625",
    "kind": "arxiv",
    "version": 1
  }
}