Pith Number

pith:YUIFWQ5T

pith:2018:YUIFWQ5TKDHCUW2C36LKQAX6ZY

not attested not anchored not stored refs pending

Understanding the Limitations of Gyrochronology for Old Field Stars

Ricky Egeland, Travis S. Metcalfe

arxiv:1811.11905 v2 · 2018-11-29 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YUIFWQ5TKDHCUW2C36LKQAX6ZY}

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	2026-05-17T23:52:30.016391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5105b43b350ce2a5b42df96a802fece1c3182c55399ecddc48b6abe0eb88556

Aliases

arxiv: 1811.11905 · arxiv_version: 1811.11905v2 · doi: 10.48550/arxiv.1811.11905 · pith_short_12: YUIFWQ5TKDHC · pith_short_16: YUIFWQ5TKDHCUW2C · pith_short_8: YUIFWQ5T

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/YUIFWQ5TKDHCUW2C36LKQAX6ZY \
  | 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: c5105b43b350ce2a5b42df96a802fece1c3182c55399ecddc48b6abe0eb88556

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4498c908a4dd19d93d6fb6478de7050543a8b724667d911cc387ae7c82af26d",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-11-29T01:15:36Z",
    "title_canon_sha256": "5c73477b6166552a9e8e2480147984cb9d699465ebae75c7ae3250cd3a094c59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.11905",
    "kind": "arxiv",
    "version": 2
  }
}