Pith Number

pith:XY4YPRAA

pith:2015:XY4YPRAA3F5AHUELEJHVY6MT5S

not attested not anchored not stored refs pending

Optical spectroscopy of candidate Alpha Persei white dwarfs

N. C. Hambly, N. Lodieu, P. D. Dobbie, S. Geier, S. L. Casewell

arxiv:1506.01861 v1 · 2015-06-05 · 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{XY4YPRAA3F5AHUELEJHVY6MT5S}

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	2026-05-18T01:55:59.036127Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be3987c400d97a03d08b224f5c7993ec9264812af8451e478823eea8de99e38e

Aliases

arxiv: 1506.01861 · arxiv_version: 1506.01861v1 · doi: 10.48550/arxiv.1506.01861 · pith_short_12: XY4YPRAA3F5A · pith_short_16: XY4YPRAA3F5AHUEL · pith_short_8: XY4YPRAA

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/XY4YPRAA3F5AHUELEJHVY6MT5S \
  | 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: be3987c400d97a03d08b224f5c7993ec9264812af8451e478823eea8de99e38e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c6ebe6d1ea0b20b59fb01178ec7e96d73da9ae779ad66d4e28a9aada5808f80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-06-05T10:52:11Z",
    "title_canon_sha256": "5b980a8cc722885184414a4d69b5b24bffd075b505fdd73ea8c1ddac3e917749"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.01861",
    "kind": "arxiv",
    "version": 1
  }
}