Pith Number

pith:OVGGYOK3

pith:2018:OVGGYOK3Z6V7CH5ABHBQLMRANV

not attested not anchored not stored refs pending

Chemical abundances and radial velocities in the extremely metal-poor galaxy DDO 68

(2) Dipartimento di Fisica e Astronomia, (3) Space Telescope Science Institute, (4) INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica, A. Aloisi (3), A. Marchetti (4), Baltimore, Bologna, C. Nipoti (2), D. Romano (1), E. Sacchi (3) ((1) INAF-Osservatorio di Astrofisica e Scienza dello Spazio, F. Annibali (1), F. Cusano (1), Italy, Italy), L. Ciotti (2), M. Bellazzini (1), Milano, M. Mignoli (1), M. Tosi (1), Universit\`a di Bologna, USA, V. La Torre (2)

arxiv:1810.02830 v1 · 2018-10-05 · 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{OVGGYOK3Z6V7CH5ABHBQLMRANV}

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	2026-05-18T00:01:27.957270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

754c6c395bcfabf11fa009c305b2206d7a4e306cc1e6e0b717b78bd37e037573

Aliases

arxiv: 1810.02830 · arxiv_version: 1810.02830v1 · doi: 10.48550/arxiv.1810.02830 · pith_short_12: OVGGYOK3Z6V7 · pith_short_16: OVGGYOK3Z6V7CH5A · pith_short_8: OVGGYOK3

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/OVGGYOK3Z6V7CH5ABHBQLMRANV \
  | 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: 754c6c395bcfabf11fa009c305b2206d7a4e306cc1e6e0b717b78bd37e037573

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80320c59a52690824119abb620259efcc686046653f1c13fafe44c269a6f01a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-05T18:01:20Z",
    "title_canon_sha256": "36a0e755ceb0eda02aa74653f5cb2f46b9619a7b631fddf9f274cbe534798d34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.02830",
    "kind": "arxiv",
    "version": 1
  }
}