Pith Number

pith:XPXTIEKC

pith:2021:XPXTIEKCOESGYYYRSIE53ELVIW

not attested not anchored not stored refs pending

Evolved Massive Stars at Low-metallicity IV. Using 1.6 $\mu$m "H-bump" to identify red supergiant stars: a case study of NGC 6822

Alceste Z. Bonanos, Biwei Jiang, Frank Tramper, Grigoris Maravelias, Jian Gao, Man I Lam, Ming Yang, Panagiotis Gavras, Shu Wang, Xiao-Dian Chen, Yi Ren, Zoi T. Spetsieri

arxiv:2101.08689 v1 · 2021-01-21 · 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{XPXTIEKCOESGYYYRSIE53ELVIW}

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	2026-07-05T02:27:39.636892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbef34114271246c63119209dd917545a502c23aaeea1cd5218f4b8cd7447eaa

Aliases

arxiv: 2101.08689 · arxiv_version: 2101.08689v1 · doi: 10.48550/arxiv.2101.08689 · pith_short_12: XPXTIEKCOESG · pith_short_16: XPXTIEKCOESGYYYR · pith_short_8: XPXTIEKC

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/XPXTIEKCOESGYYYRSIE53ELVIW \
  | 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: bbef34114271246c63119209dd917545a502c23aaeea1cd5218f4b8cd7447eaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2163a3e2d565f63b100a94dbc6369f65b78d0fb99cab1c6816c31aaca1b76ba",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-01-21T16:01:01Z",
    "title_canon_sha256": "bf9c99560bef211ba22680be21c200f026c0379b971b4660bf65af5c06fc03dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.08689",
    "kind": "arxiv",
    "version": 1
  }
}