Pith Number

pith:FAGNG6M2

pith:2026:FAGNG6M2LFE4HGGPAWACVTKTPC

not attested not anchored not stored refs pending

Multi epoch spectroscopic variability of the B supergiant HD75149

C. Arcos, C. E. Perez-Ramirez, D. Turis-Gallo, I. Araya, J. Chamoun-Contreras, L. S. Cidale, M. Cur\'e, M. Hadjara, N. Machuca

arxiv:2605.29044 v1 · 2026-05-27 · 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{FAGNG6M2LFE4HGGPAWACVTKTPC}

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	2026-05-29T01:04:44.360039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

280cd3799a5949c398cf05802acd537899a9fff650f44c967e407c37e75ba020

Aliases

arxiv: 2605.29044 · arxiv_version: 2605.29044v1 · doi: 10.48550/arxiv.2605.29044 · pith_short_12: FAGNG6M2LFE4 · pith_short_16: FAGNG6M2LFE4HGGP · pith_short_8: FAGNG6M2

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/FAGNG6M2LFE4HGGPAWACVTKTPC \
  | 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: 280cd3799a5949c398cf05802acd537899a9fff650f44c967e407c37e75ba020

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a871c301e924efd179579893efa513966102c8e291d812e71e714514d2a0dfcf",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-27T19:48:57Z",
    "title_canon_sha256": "9a3a59c48db812e8e76f32d56707f36cbc6cd6d455e96e4daf86662192c779dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.29044",
    "kind": "arxiv",
    "version": 1
  }
}