Pith Number

pith:QSPTF7U3

pith:2021:QSPTF7U3MWRL4XAYYU6TB2GUBQ

not attested not anchored not stored refs pending

HR-pyPopStar: high wavelength-resolution stellar populations evolutionary synthesis model

I. Mill\'an-Irigoyen, M. Cervi\~no, M.L. Garc\'ia-Vargas, M. Moll\'a, P.R.T. Coelho, Y. Ascasibar

arxiv:2107.12763 v1 · 2021-07-27 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QSPTF7U3MWRL4XAYYU6TB2GUBQ}

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	2026-07-05T03:01:00.387675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

849f32fe9b65a2be5c18c53d30e8d40c0ecd66913f67e05d044491dd0f39fc80

Aliases

arxiv: 2107.12763 · arxiv_version: 2107.12763v1 · doi: 10.48550/arxiv.2107.12763 · pith_short_12: QSPTF7U3MWRL · pith_short_16: QSPTF7U3MWRL4XAY · pith_short_8: QSPTF7U3

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/QSPTF7U3MWRL4XAYYU6TB2GUBQ \
  | 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: 849f32fe9b65a2be5c18c53d30e8d40c0ecd66913f67e05d044491dd0f39fc80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2837fd2039732d08a04a8a0a656f70678dc103425f5f048ac8a4745ccf9f4ded",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-07-27T12:12:30Z",
    "title_canon_sha256": "ee13e5e0b05b2e46b1918d1b0a7e109713ea859f9e244d931cfcf14182c45f08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.12763",
    "kind": "arxiv",
    "version": 1
  }
}