Pith Number

pith:YDSOMXDR

pith:2011:YDSOMXDR4ZGQA47ERTM7CYWVUQ

not attested not anchored not stored refs pending

Systematic search for extremely metal poor galaxies in the Sloan Digital Sky Survey

2), 2) ((1) Instituto de Astrofisica de Canarias, (2) Departamento de Astrofisica, A. B. Morales-Luis (1, C. Munoz-Tunon (1, J. A. L. Aguerri (1, J. Sanchez Almeida (1, Spain, Spain), Tenerife, Universidad de La Laguna

arxiv:1109.0235 v1 · 2011-09-01 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YDSOMXDR4ZGQA47ERTM7CYWVUQ}

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	2026-05-18T02:00:43.188636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0e4e65c71e64d0073e48cd9f162d5a42b0d8af84fec6146ffc99fc7254ef46f

Aliases

arxiv: 1109.0235 · arxiv_version: 1109.0235v1 · doi: 10.48550/arxiv.1109.0235 · pith_short_12: YDSOMXDR4ZGQ · pith_short_16: YDSOMXDR4ZGQA47E · pith_short_8: YDSOMXDR

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/YDSOMXDR4ZGQA47ERTM7CYWVUQ \
  | 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: c0e4e65c71e64d0073e48cd9f162d5a42b0d8af84fec6146ffc99fc7254ef46f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fb8e180a01297216fc8b475d7c4a40fc2b0bb65c67052ba7a08c90a46fd377e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-01T16:57:55Z",
    "title_canon_sha256": "5476215f05c79859cf0b5a98f897ea673fdc91f434a4c345f892a4df09319905"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0235",
    "kind": "arxiv",
    "version": 1
  }
}