Pith Number

pith:HUSUMPPZ

pith:2021:HUSUMPPZ42F4THGQ2CSRLPFNYY

not attested not anchored not stored refs pending

VVV-WIT-08: the giant star that blinked

Andrzej Udalski, Carlos Gonz\'alez-Fern\'andez, Dante Minniti, David Aguado, Jason L. Sanders, Leigh C. Smith, Luciano Fraga, N. Wyn Evans, Pawel Pietrukowicz, Philip W. Lucas, Roberto K. Saito, Sergey E. Koposov, Valentin D. Ivanov, Zephyr Penoyre

arxiv:2106.05300 v1 · 2021-06-09 · 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{HUSUMPPZ42F4THGQ2CSRLPFNYY}

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	2026-07-05T02:55:50.076855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d25463df9e68bc99cd0d0a515bcadc60ba2541ee58752a0540c6b471abc7f25

Aliases

arxiv: 2106.05300 · arxiv_version: 2106.05300v1 · doi: 10.48550/arxiv.2106.05300 · pith_short_12: HUSUMPPZ42F4 · pith_short_16: HUSUMPPZ42F4THGQ · pith_short_8: HUSUMPPZ

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/HUSUMPPZ42F4THGQ2CSRLPFNYY \
  | 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: 3d25463df9e68bc99cd0d0a515bcadc60ba2541ee58752a0540c6b471abc7f25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb0da0daae0853205b5a1f97bb9779e3806ed776a246e517f6b6124439d4faad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-06-09T18:00:13Z",
    "title_canon_sha256": "263f86f423391ff599221ebaeaf190cd9b5719a13215f5a5d3f1791aaa9ec7a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.05300",
    "kind": "arxiv",
    "version": 1
  }
}