Pith Number

pith:4A4WGDLA

pith:2023:4A4WGDLAKFNVR5LYBZAMGARXWP

not attested not anchored not stored refs pending

Characterising the true descendants of the first stars

\'Asa Sk\'ulad\'ottir, Ioanna Koutsouridou, Irene Vanni, Martina Rossi, Stefania Salvadori

arxiv:2309.07958 v3 · 2023-09-14 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4A4WGDLAKFNVR5LYBZAMGARXWP}

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	2026-07-05T06:57:26.103162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e039630d60515b58f5780e40c30237b3c66787edd50b9f88ccce4997265e7424

Aliases

arxiv: 2309.07958 · arxiv_version: 2309.07958v3 · doi: 10.48550/arxiv.2309.07958 · pith_short_12: 4A4WGDLAKFNV · pith_short_16: 4A4WGDLAKFNVR5LY · pith_short_8: 4A4WGDLA

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/4A4WGDLAKFNVR5LYBZAMGARXWP \
  | 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: e039630d60515b58f5780e40c30237b3c66787edd50b9f88ccce4997265e7424

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83a330288168fa5f7fa70aac979f3d083305aa1a19b64289397c24e64cfea1da",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-09-14T18:00:02Z",
    "title_canon_sha256": "32546533cb332c143ecdea610cf532b6b669c0b2154714716880624eebfea532"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2309.07958",
    "kind": "arxiv",
    "version": 3
  }
}