Pith Number

pith:NGNNXYOU

pith:2015:NGNNXYOUPGS37JKYK2WUYDM2HW

not attested not anchored not stored refs pending

New age-metallicity diagnostic diagram for the Washington photometric system

Andr\'es E. Piatti, Gabriel I. Perren

arxiv:1504.03894 v1 · 2015-04-15 · 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{NGNNXYOUPGS37JKYK2WUYDM2HW}

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	2026-05-18T02:03:32.744440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

699adbe1d479a5bfa55856ad4c0d9a3d910038d05b06e36b5cca5299a79863cc

Aliases

arxiv: 1504.03894 · arxiv_version: 1504.03894v1 · doi: 10.48550/arxiv.1504.03894 · pith_short_12: NGNNXYOUPGS3 · pith_short_16: NGNNXYOUPGS37JKY · pith_short_8: NGNNXYOU

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/NGNNXYOUPGS37JKYK2WUYDM2HW \
  | 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: 699adbe1d479a5bfa55856ad4c0d9a3d910038d05b06e36b5cca5299a79863cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf783f7907dfdcbd6b129854e1d0b652a5409a7ff3bb1ee07c5363977ce4d849",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-04-15T12:53:19Z",
    "title_canon_sha256": "6f8812c772db36329adca1f3928ec9bc2880079671668f0d7102f4ac89e5d297"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03894",
    "kind": "arxiv",
    "version": 1
  }
}