Pith Number

pith:J67A45P2

pith:2010:J67A45P2TLKTFK6LFSTJK6IKOE

not attested not anchored not stored refs pending

The Extreme LBV Star GR290 (Romano's Star) in M33. Optical Spectrophotometric Monitoring

C. Rossi, L. Norci, R. F. Viotti, R. Gualandi, S. Galleti, V. F. Polcaro

arxiv:1010.2136 v1 · 2010-10-11 · 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{J67A45P2TLKTFK6LFSTJK6IKOE}

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	2026-05-18T04:39:29.589494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fbe0e75fa9ad532abcb2ca695790a7104a77b26d7cbcf16fc7ee1f53f6bb997

Aliases

arxiv: 1010.2136 · arxiv_version: 1010.2136v1 · doi: 10.48550/arxiv.1010.2136 · pith_short_12: J67A45P2TLKT · pith_short_16: J67A45P2TLKTFK6L · pith_short_8: J67A45P2

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/J67A45P2TLKTFK6LFSTJK6IKOE \
  | 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: 4fbe0e75fa9ad532abcb2ca695790a7104a77b26d7cbcf16fc7ee1f53f6bb997

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ea9804158bb85cebabf8e9b61e2ed721acfd83c210db75a20913c79a466cf8c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-10-11T15:28:06Z",
    "title_canon_sha256": "dc4edf91ca9cbd9dbefb09bda29aa096a8657d988fdb3492f163e19ea85f38b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.2136",
    "kind": "arxiv",
    "version": 1
  }
}