Pith Number

pith:A634PQVK

pith:2018:A634PQVKMUSJS5CBUFSE7ZPW2K

not attested not anchored not stored refs pending

Constraining the period of the ringed secondary companion to the young star J1407 with photographic plates

A. Schrimpf, D. A. Cameron, D. E. Reichart, E. E. Mamajek, E. L. Scott, F.-J. Hambsch, J. B. Haislip, J. E. Grindlay, J. L. Birkby, K. Hills, M. A. Kenworthy, R. Hudec, R. T. Mentel, S. N. Mellon, T.-G. Tan, V. V. Kouprianov

arxiv:1810.05171 v1 · 2018-10-11 · 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{A634PQVKMUSJS5CBUFSE7ZPW2K}

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	2026-05-17T23:59:49.112569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07b7c7c2aa6524997441a1644fe5f6d29bfb016fb0695f2c31640930daedd237

Aliases

arxiv: 1810.05171 · arxiv_version: 1810.05171v1 · doi: 10.48550/arxiv.1810.05171 · pith_short_12: A634PQVKMUSJ · pith_short_16: A634PQVKMUSJS5CB · pith_short_8: A634PQVK

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/A634PQVKMUSJS5CBUFSE7ZPW2K \
  | 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: 07b7c7c2aa6524997441a1644fe5f6d29bfb016fb0695f2c31640930daedd237

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9fff92dec7ecb40347d192f0d35839ae662b360a4d9bc3675889872c710b853",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-10-11T18:00:02Z",
    "title_canon_sha256": "d7c8113501008af810cafa776ba1a512aaca2a1e4f6d86f97661c3136d1dde59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.05171",
    "kind": "arxiv",
    "version": 1
  }
}