Pith Number

pith:EUPJNJPU

pith:2019:EUPJNJPU4PT2PGAPW7ZZF6ABBD

not attested not anchored not stored refs pending

Age Determination in Upper Scorpius with Eclipsing Binaries

Ann Marie Cody, Edward Gillen, Howard T. Isaacson, John H. Livingston, Lynne A. Hillenbrand, Steve B. Howell, Trevor J. David

arxiv:1901.05532 v1 · 2019-01-16 · 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{EUPJNJPU4PT2PGAPW7ZZF6ABBD}

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	2026-05-17T23:52:38.473711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

251e96a5f4e3e7a7980fb7f392f80108d83c574e05f74cd44fc0f844a0379c98

Aliases

arxiv: 1901.05532 · arxiv_version: 1901.05532v1 · doi: 10.48550/arxiv.1901.05532 · pith_short_12: EUPJNJPU4PT2 · pith_short_16: EUPJNJPU4PT2PGAP · pith_short_8: EUPJNJPU

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/EUPJNJPU4PT2PGAPW7ZZF6ABBD \
  | 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: 251e96a5f4e3e7a7980fb7f392f80108d83c574e05f74cd44fc0f844a0379c98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc7d900fc9d202924c8b8e8a5760a7e1d47f08f8dd8b9b05f736bb333bafe1c1",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-01-16T21:30:55Z",
    "title_canon_sha256": "b270024020f59de6a8cabf6030547df1fee7b0d583eae34dde329047973614f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.05532",
    "kind": "arxiv",
    "version": 1
  }
}