Pith Number

pith:44AIYVPM

pith:2018:44AIYVPMXXZ3CKTBH6PZCTM6SE

not attested not anchored not stored refs pending

Recovering stellar population parameters via two full-spectrum fitting algorithms in the absence of model uncertainties

Hongyu Li, Junqiang Ge, Michele Cappellari, Renbin Yan, Shude Mao, Youjun Lu

arxiv:1805.03972 v1 · 2018-05-10 · 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{44AIYVPMXXZ3CKTBH6PZCTM6SE}

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	2026-05-18T00:15:13.356332Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7008c55ecbdf3b12a613f9f914d9e910813353acbe000fc8328eb7d65cc97e0

Aliases

arxiv: 1805.03972 · arxiv_version: 1805.03972v1 · doi: 10.48550/arxiv.1805.03972 · pith_short_12: 44AIYVPMXXZ3 · pith_short_16: 44AIYVPMXXZ3CKTB · pith_short_8: 44AIYVPM

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/44AIYVPMXXZ3CKTBH6PZCTM6SE \
  | 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: e7008c55ecbdf3b12a613f9f914d9e910813353acbe000fc8328eb7d65cc97e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "723b5bcfd105c69450080e68f9e94e06f3de93dfd89e6393a20252b418dfb92d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-10T13:36:18Z",
    "title_canon_sha256": "31042450c515bc40ead21f122c0c44902e06bfef29ed18503b8dd711771c9628"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03972",
    "kind": "arxiv",
    "version": 1
  }
}