Pith Number

pith:EC2DSZ2K

pith:2016:EC2DSZ2KOPMYPQLBLJOTT2W323

not attested not anchored not stored refs pending

GR 290 (Romano's Star): 2. Light history and evolutionary state

A. Chieffi, A. Pasquali, C. Rossi, M. Calabresi, O. F. Mills, O. Maryeva, R.F. Viotti, R. Gualandi, R. Haver, R. Nesci, S. Galleti, T. Vasilyeva, V. F. Polcaro, W. H. Osborn

arxiv:1603.07284 v2 · 2016-03-23 · 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{EC2DSZ2KOPMYPQLBLJOTT2W323}

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	2026-05-18T01:13:11.427511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20b439674a73d987c1615a5d39eadbd6c2b6f0a0fc6c65bd40585ea1b866cc27

Aliases

arxiv: 1603.07284 · arxiv_version: 1603.07284v2 · doi: 10.48550/arxiv.1603.07284 · pith_short_12: EC2DSZ2KOPMY · pith_short_16: EC2DSZ2KOPMYPQLB · pith_short_8: EC2DSZ2K

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/EC2DSZ2KOPMYPQLBLJOTT2W323 \
  | 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: 20b439674a73d987c1615a5d39eadbd6c2b6f0a0fc6c65bd40585ea1b866cc27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c0e5c38062a4ceaf5ef8062b46437de39f3bf65bb0f56b2b6d4a907ecb78858",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-03-23T17:43:31Z",
    "title_canon_sha256": "92ffa11a2d773a26ee768e124d835d371d1e183332da0efe9a035b8c515434c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.07284",
    "kind": "arxiv",
    "version": 2
  }
}