Pith Number

pith:53UI44DJ

pith:2021:53UI44DJ55H2IU5AEUJQUN5WMJ

not attested not anchored not stored refs pending

J2229+2725: an extremely low-metallicity dwarf compact star-forming galaxy with an exceptionally high [OIII]5007/[OII]3727 flux ratio of 53

(2) Astronomy Department, Charlottesville, Kyiv, National Academy of Sciences of Ukraine, N. G. Guseva (1) ((1) Bogolyubov Institute for Theoretical Physics, T. X. Thuan (2), Ukraine, University of Virginia, USA), Y. I. Izotov (1)

arxiv:2104.08035 v1 · 2021-04-16 · 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{53UI44DJ55H2IU5AEUJQUN5WMJ}

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	2026-07-05T03:17:14.542063Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eee88e7069ef4fa453a025130a37b66243e697d069cb5e50ba12de6593dbc2dd

Aliases

arxiv: 2104.08035 · arxiv_version: 2104.08035v1 · doi: 10.48550/arxiv.2104.08035 · pith_short_12: 53UI44DJ55H2 · pith_short_16: 53UI44DJ55H2IU5A · pith_short_8: 53UI44DJ

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/53UI44DJ55H2IU5AEUJQUN5WMJ \
  | 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: eee88e7069ef4fa453a025130a37b66243e697d069cb5e50ba12de6593dbc2dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c250cf0ddee9c608b4b7a585265410353d536ed557199c75bef2fd8834297702",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-04-16T11:10:30Z",
    "title_canon_sha256": "3eaa4911a76ddff03e35e17a28f6c2e9f0ec388c4ae0d13361b3ff890306657f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.08035",
    "kind": "arxiv",
    "version": 1
  }
}