Pith Number

pith:DDEP3ABE

pith:2021:DDEP3ABEJ6HKWPXGVPUWRSLDXM

not attested not anchored not stored refs pending

The Galactic metallicity gradient shown by open clusters in the light of radial migration

Hikmet \c{C}akmak, \.Inci Akkaya Oralhan, Martin Netopil, Ra\'ul Michel, Y\"uksel Karata\c{s}

arxiv:2110.11893 v2 · 2021-10-22 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDEP3ABEJ6HKWPXGVPUWRSLDXM}

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	2026-07-05T03:29:52.973778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18c8fd80244f8eab3ee6abe968c963bb288c8c41db1ad4d0a045a346a7031f8b

Aliases

arxiv: 2110.11893 · arxiv_version: 2110.11893v2 · doi: 10.48550/arxiv.2110.11893 · pith_short_12: DDEP3ABEJ6HK · pith_short_16: DDEP3ABEJ6HKWPXG · pith_short_8: DDEP3ABE

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/DDEP3ABEJ6HKWPXGVPUWRSLDXM \
  | 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: 18c8fd80244f8eab3ee6abe968c963bb288c8c41db1ad4d0a045a346a7031f8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad1a4fcdbad2163c1f144e0f5c65546c72fe7d710650cec31038bd1fe0b2d17b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-10-22T16:21:50Z",
    "title_canon_sha256": "e74b07f8f014b7d25e38ab8fad5a27e8dc505906c7428902355452de652af95f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.11893",
    "kind": "arxiv",
    "version": 2
  }
}