Pith Number

pith:FR554FTQ

pith:2009:FR554FTQAJCXDP45H6ECGYDQ2Y

not attested not anchored not stored refs pending

On the Nature of the Apparent Ring Galaxy SDSS J075234.33+292049.8

Alexei Moiseev, Alexei Y. Kniazev, Noah Brosch, Simon A. Pustilnik

arxiv:0910.0589 v1 · 2009-10-04 · 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{FR554FTQAJCXDP45H6ECGYDQ2Y}

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	2026-05-18T02:11:26.917900Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c7bde1670024571bf9d3f88236070d63d8c673345b7b8d6a340d0ac8a67166a

Aliases

arxiv: 0910.0589 · arxiv_version: 0910.0589v1 · doi: 10.48550/arxiv.0910.0589 · pith_short_12: FR554FTQAJCX · pith_short_16: FR554FTQAJCXDP45 · pith_short_8: FR554FTQ

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/FR554FTQAJCXDP45H6ECGYDQ2Y \
  | 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: 2c7bde1670024571bf9d3f88236070d63d8c673345b7b8d6a340d0ac8a67166a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f944ace94e6aebe21361487256923d5b7f262905823eed874dad6c547ee0192a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-10-04T07:44:20Z",
    "title_canon_sha256": "f0818b8e2a80bf8842c42c366f0328176888c4ada31b3fe192ef2dfe5250cc26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.0589",
    "kind": "arxiv",
    "version": 1
  }
}