Pith Number

pith:LLYPP2HR

pith:2010:LLYPP2HRTXZYR4UFSWDLXI5PSZ

not attested not anchored not stored refs pending

Photometry of two unusual A supergiant systems in the Small Magellanic Cloud

G. Pietrzy\'nski, I. Soszy\'nski, M. Smith, R.E. Mennickent, Z. Ko{\l}aczkowski

arxiv:1004.2728 v1 · 2010-04-15 · 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{LLYPP2HRTXZYR4UFSWDLXI5PSZ}

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	2026-05-18T02:08:05.000874Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5af0f7e8f19df388f2859586bba3af965868796ba9dafc14b8ef51665a1e8907

Aliases

arxiv: 1004.2728 · arxiv_version: 1004.2728v1 · doi: 10.48550/arxiv.1004.2728 · pith_short_12: LLYPP2HRTXZY · pith_short_16: LLYPP2HRTXZYR4UF · pith_short_8: LLYPP2HR

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/LLYPP2HRTXZYR4UFSWDLXI5PSZ \
  | 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: 5af0f7e8f19df388f2859586bba3af965868796ba9dafc14b8ef51665a1e8907

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d8e22ed53ce2b510d9931bff73e59d98934960b9897f2921fa5e2dce1d2da4a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-04-15T22:21:44Z",
    "title_canon_sha256": "ded8e30a95fe17776ea087913bc8bbe6d194ad399f8d66a31cbdf9dffa9bb628"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2728",
    "kind": "arxiv",
    "version": 1
  }
}