Pith Number

pith:OPYJDCIH

pith:2022:OPYJDCIHZS6HSY7RUJIWCHCSKP

not attested not anchored not stored refs pending

The hydrogen clock to infer the upper stellar mass

Andreas A.C. Sander, Erin R. Higgins, Gautham N. Sabhahit, Jorick S. Vink

arxiv:2209.00667 v1 · 2022-09-01 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPYJDCIHZS6HSY7RUJIWCHCSKP}

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	2026-07-05T04:59:31.733399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73f0918907ccbc7963f1a251611c5253d73bb9930881eda82dcc981c9f8a89f7

Aliases

arxiv: 2209.00667 · arxiv_version: 2209.00667v1 · doi: 10.48550/arxiv.2209.00667 · pith_short_12: OPYJDCIHZS6H · pith_short_16: OPYJDCIHZS6HSY7R · pith_short_8: OPYJDCIH

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/OPYJDCIHZS6HSY7RUJIWCHCSKP \
  | 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: 73f0918907ccbc7963f1a251611c5253d73bb9930881eda82dcc981c9f8a89f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cb5d413987fc96b20222e10cee375807736fb9671438565611ec2515d13295b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2022-09-01T18:00:13Z",
    "title_canon_sha256": "dbcc0830fa843b3d337f04091cc5084874f3f19ceac91b43187335c2f04b34b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.00667",
    "kind": "arxiv",
    "version": 1
  }
}