Pith Number

pith:3UNGIAHK

pith:2012:3UNGIAHKT6DXH5WCUG7XFCEIPD

not attested not anchored not stored refs pending

On the nature of candidate luminous blue variables in M33

A. Herrero, B. W. Ritchie, F. Najarro, I. Negueruela, J. S. Clark, K. T. Smith, M. Garcia, N. Castro

arxiv:1202.4409 v1 · 2012-02-20 · 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{3UNGIAHKT6DXH5WCUG7XFCEIPD}

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	2026-05-18T01:58:23.388016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd1a6400ea9f8773f6c2a1bf72888878ef2de755ebed2541c5c9d93707e42d5a

Aliases

arxiv: 1202.4409 · arxiv_version: 1202.4409v1 · doi: 10.48550/arxiv.1202.4409 · pith_short_12: 3UNGIAHKT6DX · pith_short_16: 3UNGIAHKT6DXH5WC · pith_short_8: 3UNGIAHK

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/3UNGIAHKT6DXH5WCUG7XFCEIPD \
  | 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: dd1a6400ea9f8773f6c2a1bf72888878ef2de755ebed2541c5c9d93707e42d5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7282f3d87c9736c8e53ef42ddc1e7fedd2cb8fde1e03f9ab6b7a106c14fb64b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-02-20T18:17:25Z",
    "title_canon_sha256": "47692278863e58b9e36493a0057516ec3a66d05c9fa0694abb47212598a6b7d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4409",
    "kind": "arxiv",
    "version": 1
  }
}