Pith Number

pith:YZ7E4BS4

pith:2005:YZ7E4BS4JEEZTSDD6EXH6T4QQ7

not attested not anchored not stored refs pending

Stellar abundance gradients in galactic disks. I. Method and spectral line gradients

(2) Swinburne University), B. K. Gibson (2) ((1) AAO, S. D. Ryder (1), Y. Fenner (2)

arxiv:astro-ph/0501355 v1 · 2005-01-17 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YZ7E4BS4JEEZTSDD6EXH6T4QQ7}

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	2026-05-18T04:27:04.343158Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c67e4e065c490999c863f12e7f4f9087cac8e3b12587f8b4ef491aad1344e011

Aliases

arxiv: astro-ph/0501355 · arxiv_version: astro-ph/0501355v1 · doi: 10.48550/arxiv.astro-ph/0501355 · pith_short_12: YZ7E4BS4JEEZ · pith_short_16: YZ7E4BS4JEEZTSDD · pith_short_8: YZ7E4BS4

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/YZ7E4BS4JEEZTSDD6EXH6T4QQ7 \
  | 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: c67e4e065c490999c863f12e7f4f9087cac8e3b12587f8b4ef491aad1344e011

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e8f9e4282c1bc7d81b99770a5ecaadec56da8620ac31044f05fd5ba8eaeffe3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-01-17T21:11:11Z",
    "title_canon_sha256": "b7cc183248bbd206464d3af4480a84ce437c0ff871e1cfe99de951408021bc89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0501355",
    "kind": "arxiv",
    "version": 1
  }
}