Pith Number

pith:VLCFHKL5

pith:2026:VLCFHKL5JX4AQIY4OUPYRGQPO7

not attested not anchored not stored refs pending

First double red giant Algol system with active mass transfer

Dengkai Jiang, Hailiang Chen, Hongwei Ge, Jiao Li, Marina Burlak, Mikhail Kovalev, Natalia Ikonnikova, Sufen Guo, Xuefei Chen, Zhanwen Han

arxiv:2607.17552 v1 · 2026-07-20 · 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{VLCFHKL5JX4AQIY4OUPYRGQPO7}

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	2026-07-21T01:21:52.006079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aac453a97d4df808231c751f889a0f77cd2555a7c1d8c120ce3be41994ebbdcc

Aliases

arxiv: 2607.17552 · arxiv_version: 2607.17552v1 · doi: 10.48550/arxiv.2607.17552 · pith_short_12: VLCFHKL5JX4A · pith_short_16: VLCFHKL5JX4AQIY4 · pith_short_8: VLCFHKL5

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/VLCFHKL5JX4AQIY4OUPYRGQPO7 \
  | 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: aac453a97d4df808231c751f889a0f77cd2555a7c1d8c120ce3be41994ebbdcc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "437e0cace05663847507e39bb562df80e7201dacc92eac2dd4533169f61e3f40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-07-20T04:57:19Z",
    "title_canon_sha256": "471b64399fa679f03af39b53d03479a1fa7eeb8d73b9e723bb80fa6fcc750f3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.17552",
    "kind": "arxiv",
    "version": 1
  }
}