Pith Number

pith:4UX7MQRD

pith:2017:4UX7MQRD5MWVUEGEKONT4KTYCL

not attested not anchored not stored refs pending

Evolutionary Constraints on the Long-period Subdwarf B Binary PG 1018-047

C. M. Copperwheat, J. Deca, J. Vos, P. F. L. Maxted, P. N\'emeth, R. {\O}stensen, T. R. Marsh

arxiv:1710.07327 v1 · 2017-10-19 · 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{4UX7MQRD5MWVUEGEKONT4KTYCL}

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	2026-05-18T00:27:42.495549Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e52ff64223eb2d5a10c4539b3e2a7812d2cd94436a3ae636174f25bf8837550e

Aliases

arxiv: 1710.07327 · arxiv_version: 1710.07327v1 · doi: 10.48550/arxiv.1710.07327 · pith_short_12: 4UX7MQRD5MWV · pith_short_16: 4UX7MQRD5MWVUEGE · pith_short_8: 4UX7MQRD

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/4UX7MQRD5MWVUEGEKONT4KTYCL \
  | 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: e52ff64223eb2d5a10c4539b3e2a7812d2cd94436a3ae636174f25bf8837550e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83536b8f7499c56a46bc5f7cde482c947615e8d098487b603990c3fd586e3dbe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-10-19T19:29:39Z",
    "title_canon_sha256": "9f817cc0edcdeec52f7c0f6456437ee1fc31ffb6e5ac446f83981fbf8f316a31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.07327",
    "kind": "arxiv",
    "version": 1
  }
}