Pith Number

pith:L2VQ2R2V

pith:2017:L2VQ2R2VZPMWSDUONSSTGO6I63

not attested not anchored not stored refs pending

The red supergiant population in the Perseus arm

Carlos Gonz\'alez-Fern\'andez, Ignacio Negueruela, Ricardo Dorda

arxiv:1712.08176 v1 · 2017-12-21 · 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{L2VQ2R2VZPMWSDUONSSTGO6I63}

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	2026-05-18T00:24:14.592796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5eab0d4755cbd9690e8e6ca5333bc8f6cd8c00e9db1a0186a173a429a438cb2b

Aliases

arxiv: 1712.08176 · arxiv_version: 1712.08176v1 · doi: 10.48550/arxiv.1712.08176 · pith_short_12: L2VQ2R2VZPMW · pith_short_16: L2VQ2R2VZPMWSDUO · pith_short_8: L2VQ2R2V

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/L2VQ2R2VZPMWSDUONSSTGO6I63 \
  | 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: 5eab0d4755cbd9690e8e6ca5333bc8f6cd8c00e9db1a0186a173a429a438cb2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f0767ebe39adca6be8a22a16f2a67991b7d0f0250ebe6b0e1bf90da7237f205",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-12-21T19:11:58Z",
    "title_canon_sha256": "57bad9972774024c49d737a71234dc01bcf557ff4735ffc4fa1ce3e304e8232c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.08176",
    "kind": "arxiv",
    "version": 1
  }
}