Pith Number

pith:YPUFRG6X

pith:2019:YPUFRG6X74EFJ45ZSF7CKCVUIA

not attested not anchored not stored refs pending

Carbon stars with increased oxygen and nitrogen abundances: hydrostatic dust-free model atmospheres

Ambra Nanni, Bernhard Aringer, Leo Girardi, Marko Mecina, Paola Marigo, Walter Nowotny

arxiv:1905.09106 v1 · 2019-05-22 · astro-ph.SR

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

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	2026-05-17T23:45:21.965555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3e8589bd7ff0854f3b9917e250ab4401253bf805ec8930ed6cfebc4c3ede695

Aliases

arxiv: 1905.09106 · arxiv_version: 1905.09106v1 · doi: 10.48550/arxiv.1905.09106 · pith_short_12: YPUFRG6X74EF · pith_short_16: YPUFRG6X74EFJ45Z · pith_short_8: YPUFRG6X

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/YPUFRG6X74EFJ45ZSF7CKCVUIA \
  | 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: c3e8589bd7ff0854f3b9917e250ab4401253bf805ec8930ed6cfebc4c3ede695

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8b1d5b18e3f612be1c2e5d3b07fb218df20d36a88d956c23e7b4c084ae8e426",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-05-22T12:38:50Z",
    "title_canon_sha256": "13636881a73813b3d78e587fdf6058036d89675f85de3db0ceda2af92d8b52db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09106",
    "kind": "arxiv",
    "version": 1
  }
}