Pith Number

pith:7FSIAPFV

pith:2025:7FSIAPFVRZZBEJXEY3KR6FJ5W4

not attested not anchored not stored refs pending

Observing Orbital Decay in the Ultracompact Hot Subdwarf Binary System ZTFJ213056.71+442046.5

Alex J. Brown, Fatma Ben Daya, J\"org Knoche, Martin M. Roth, Mike Kretlow, Paul Teckenburg, Pa\v{s}ko Roje, Stefan Cikota, Stella Vje\v{s}nica, Thomas Kupfer

arxiv:2510.25653 v2 · 2025-10-29 · 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{7FSIAPFVRZZBEJXEY3KR6FJ5W4}

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	2026-05-20T00:04:16.330843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f964803cb58e721226e4c6d51f153db715be015d5d901ab78763258e4760c746

Aliases

arxiv: 2510.25653 · arxiv_version: 2510.25653v2 · doi: 10.48550/arxiv.2510.25653 · pith_short_12: 7FSIAPFVRZZB · pith_short_16: 7FSIAPFVRZZBEJXE · pith_short_8: 7FSIAPFV

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/7FSIAPFVRZZBEJXEY3KR6FJ5W4 \
  | 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: f964803cb58e721226e4c6d51f153db715be015d5d901ab78763258e4760c746

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89956d74e773207247d042364c213709f8154ca0841c698da588969ee403ab6f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-10-29T16:15:21Z",
    "title_canon_sha256": "9667497a815aa0abe61291e84f45ada5627f33e6c7445800b1aa06ceb45834a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2510.25653",
    "kind": "arxiv",
    "version": 2
  }
}