Pith Number

pith:OPKA4HYE

pith:2018:OPKA4HYE3OO5OLTBNISR3ZHRB3

not attested not anchored not stored refs pending

Wind and nebula of the M33 variable GR290 (WR/LBV)

Corinne Rossi, Gloria Koenigsberger, Massimo Calabresi, Oleg Egorov, Olga Maryeva, Roberto F. Viotti, Vito Francesco Polcaro

arxiv:1804.10940 v1 · 2018-04-29 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T00:05:31.365238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73d40e1f04db9dd72e616a251de4f10ece7d561318c797e5e5af53fc9e368fd7

Aliases

arxiv: 1804.10940 · arxiv_version: 1804.10940v1 · doi: 10.48550/arxiv.1804.10940 · pith_short_12: OPKA4HYE3OO5 · pith_short_16: OPKA4HYE3OO5OLTB · pith_short_8: OPKA4HYE

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/OPKA4HYE3OO5OLTBNISR3ZHRB3 \
  | 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: 73d40e1f04db9dd72e616a251de4f10ece7d561318c797e5e5af53fc9e368fd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "187258793fbc084494bec24165de9737af34c25622923ab9155a87a3b2f16ce3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-29T14:29:46Z",
    "title_canon_sha256": "800c05c4347aa9190178b9eae087b91d59f3e080841720a0529412d27a0b4ae8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.10940",
    "kind": "arxiv",
    "version": 1
  }
}