Pith Number

pith:K5FXQ3Q2

pith:2025:K5FXQ3Q26JUFYYHBW3ZT4NS3RO

not attested not anchored not stored refs pending

Near-infrared characterization of evolved massive stars in M31 and M33

Andrea Torres, Lydia S. Cidale, Marcelo Borges Fernandes, Maria Laura Arias, Michaela Kraus, Michalis Kourniotis

arxiv:2507.19249 v1 · 2025-07-25 · astro-ph.SR · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K5FXQ3Q26JUFYYHBW3ZT4NS3RO}

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	2026-07-05T11:43:22.277342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

574b786e1af2685c60e1b6f33e365b8bb4c4b9034c20e4a6d5d9c656ec011d17

Aliases

arxiv: 2507.19249 · arxiv_version: 2507.19249v1 · doi: 10.48550/arxiv.2507.19249 · pith_short_12: K5FXQ3Q26JUF · pith_short_16: K5FXQ3Q26JUFYYHB · pith_short_8: K5FXQ3Q2

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/K5FXQ3Q26JUFYYHBW3ZT4NS3RO \
  | 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: 574b786e1af2685c60e1b6f33e365b8bb4c4b9034c20e4a6d5d9c656ec011d17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42048e6406a9f869e40431bd1d0254ad9c9e7497e2c6bc257cda6323cd2de64f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-07-25T13:16:23Z",
    "title_canon_sha256": "b4ac6d3c934b739b6e346686d6a040c249a62cf00adeb3f64b5ca74091fb6683"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.19249",
    "kind": "arxiv",
    "version": 1
  }
}