Pith Number

pith:J6IV32OG

pith:2018:J6IV32OGK2SSFCJYEYNBWZD2KQ

not attested not anchored not stored refs pending

Gaia, Trumpler 16, and Eta Carinae

Greta Helmel, Kris Davidson, Roberta M. Humphreys

arxiv:1808.02073 v1 · 2018-08-06 · 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{J6IV32OGK2SSFCJYEYNBWZD2KQ}

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	2026-05-18T00:08:47.709584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f915de9c656a5228938261a1b647a541730f05f3ceb39de05e9d2481d56eddf

Aliases

arxiv: 1808.02073 · arxiv_version: 1808.02073v1 · doi: 10.48550/arxiv.1808.02073 · pith_short_12: J6IV32OGK2SS · pith_short_16: J6IV32OGK2SSFCJY · pith_short_8: J6IV32OG

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/J6IV32OGK2SSFCJYEYNBWZD2KQ \
  | 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: 4f915de9c656a5228938261a1b647a541730f05f3ceb39de05e9d2481d56eddf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "156662518a3b62cde143aff20453729acc5ec078cd61e1cef498f6a51af4331f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-08-06T19:16:25Z",
    "title_canon_sha256": "990994e15373e37e8f0d7ac8abefa81f94707c8ee17b0ab56c04c1c19e9dd645"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02073",
    "kind": "arxiv",
    "version": 1
  }
}