Pith Number

pith:Q2SQQ5DK

pith:2026:Q2SQQ5DKSBHJUFTECVBE3R7YJS

not attested not anchored not stored refs pending

HST observations of chromospheric UV lines in the AGB star R Leo

Donald G. Luttermoser, Graham M. Harper, Han Uitenbroek, Maryam Saberi, Theo Khouri, Wouter Vlemmings

arxiv:2606.07294 v1 · 2026-06-05 · 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{Q2SQQ5DKSBHJUFTECVBE3R7YJS}

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	2026-06-08T01:05:18.010674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86a508746a904e9a166415424dc7f84caf0fd2ca0ce7bb223ef6ce324b83d037

Aliases

arxiv: 2606.07294 · arxiv_version: 2606.07294v1 · doi: 10.48550/arxiv.2606.07294 · pith_short_12: Q2SQQ5DKSBHJ · pith_short_16: Q2SQQ5DKSBHJUFTE · pith_short_8: Q2SQQ5DK

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/Q2SQQ5DKSBHJUFTECVBE3R7YJS \
  | 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: 86a508746a904e9a166415424dc7f84caf0fd2ca0ce7bb223ef6ce324b83d037

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5952e3990e593875dd96b1199fe218fd130196f52654dea6ef4850b813d3048",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-06-05T14:06:11Z",
    "title_canon_sha256": "87c1b770256e445e056103a50ac89732b92e2014b39b5c7bf67125deaaa30eb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.07294",
    "kind": "arxiv",
    "version": 1
  }
}