Pith Number

pith:4Z3M3SP4

pith:2016:4Z3M3SP4OJOJHOLHY7JRS4W4WJ

not attested not anchored not stored refs pending

Discovery of a variable lead-rich hot subdwarf: UVO 0825+15

A. Kvammen, A. S. Baran, C. S. Jeffery, H. P. Preece, J. H. Telting, M. D. Reed, Naslim N., N. T. Behara, P. Martin, R. H. {\O}stensen, V. M. Woolf

arxiv:1611.01616 v1 · 2016-11-05 · 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{4Z3M3SP4OJOJHOLHY7JRS4W4WJ}

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	2026-05-18T01:00:04.861593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e676cdc9fc725c93b967c7d31972dcb260fcba3e82ae9b63d80b85929a9eb5a7

Aliases

arxiv: 1611.01616 · arxiv_version: 1611.01616v1 · doi: 10.48550/arxiv.1611.01616 · pith_short_12: 4Z3M3SP4OJOJ · pith_short_16: 4Z3M3SP4OJOJHOLH · pith_short_8: 4Z3M3SP4

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/4Z3M3SP4OJOJHOLHY7JRS4W4WJ \
  | 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: e676cdc9fc725c93b967c7d31972dcb260fcba3e82ae9b63d80b85929a9eb5a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a79dda31024ede59fd30eefe7b5694c935756f337aa1d51c34c1326595002a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-11-05T08:32:28Z",
    "title_canon_sha256": "46168c98f4009edcb946e28cbb5dc766c3d35829c63ddc6bbe3c61c3ddd89f9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.01616",
    "kind": "arxiv",
    "version": 1
  }
}