Pith Number

pith:YT35AHZZ

pith:2018:YT35AHZZIBXXNWS6744KBRF4OS

not attested not anchored not stored refs pending

Metal-rich, Metal-poor: Updated Stellar Population Models for Old Stellar Systems

Alexa Villaume, Charlie Conroy, Karin Lind, Pieter van Dokkum

arxiv:1801.10185 v1 · 2018-01-30 · 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{YT35AHZZIBXXNWS6744KBRF4OS}

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	2026-05-18T00:22:22.817414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4f7d01f39406f76da5eff38a0c4bc74bb4a720cd4f8f4215635d6e83d40b79f

Aliases

arxiv: 1801.10185 · arxiv_version: 1801.10185v1 · doi: 10.48550/arxiv.1801.10185 · pith_short_12: YT35AHZZIBXX · pith_short_16: YT35AHZZIBXXNWS6 · pith_short_8: YT35AHZZ

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/YT35AHZZIBXXNWS6744KBRF4OS \
  | 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: c4f7d01f39406f76da5eff38a0c4bc74bb4a720cd4f8f4215635d6e83d40b79f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f141112f6f28b54b6483b7b3225166556383e923d9df79d4e7ca652344b74a7f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-01-30T19:42:39Z",
    "title_canon_sha256": "eaee07b00cdc17ebce8a954d0a102ad8b156b7a24cff82483cf311d39914c558"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.10185",
    "kind": "arxiv",
    "version": 1
  }
}