Pith Number

pith:YOOFUYYN

pith:2021:YOOFUYYNIJSQYB3WKIOGB234UM

not attested not anchored not stored refs pending

Barium lines in high-quality spectra of two metal-poor giants in the Galactic halo

C. Chiappini, C. Cort\'es, C. Kobayashi, C. Morossi, E. Depagne, G. Cescutti, M. Franchini, M. Steffen, M. Valentini, N. Christlieb, P. Di Marcantonio, P. Fran\c{c}ois

arxiv:2109.00277 v1 · 2021-09-01 · 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{YOOFUYYNIJSQYB3WKIOGB234UM}

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	2026-07-05T03:26:06.302723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c39c5a630d42650c0776521c60eb7ca3010d7be630f7a5516578f9105682bbf2

Aliases

arxiv: 2109.00277 · arxiv_version: 2109.00277v1 · doi: 10.48550/arxiv.2109.00277 · pith_short_12: YOOFUYYNIJSQ · pith_short_16: YOOFUYYNIJSQYB3W · pith_short_8: YOOFUYYN

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/YOOFUYYNIJSQYB3WKIOGB234UM \
  | 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: c39c5a630d42650c0776521c60eb7ca3010d7be630f7a5516578f9105682bbf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca759c1677f849be9c36c25e66b43a2717f5049ff8a8973314c699fa0ab9db5e",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-09-01T09:39:10Z",
    "title_canon_sha256": "d01191258cd6e1e5474d8feb5df8223602bb71908ca697f07f393350c7dc6e9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.00277",
    "kind": "arxiv",
    "version": 1
  }
}