Pith Number

pith:TAKHNK2E

pith:2015:TAKHNK2EXDT75XEYNBQLJE7S53

not attested not anchored not stored refs pending

Eta Carinae's 2014.6 Spectroscopic Event: Clues to the Long-term Recovery from its Great Eruption

A. Mehner, C. Martayan, D. Baade, F.M. Walter, J. Martin, K. Davidson, K. Ishibashi, K. Weis, M.T. Ruiz, R.M. Humphreys, T. Rivinius, W.J. de Wit

arxiv:1504.04940 v1 · 2015-04-20 · 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	2026-05-18T01:46:14.972983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

981476ab44b8e7fedc986860b493f2eee04f0697df9893f9bb895169d656c0ee

Aliases

arxiv: 1504.04940 · arxiv_version: 1504.04940v1 · doi: 10.48550/arxiv.1504.04940 · pith_short_12: TAKHNK2EXDT7 · pith_short_16: TAKHNK2EXDT75XEY · pith_short_8: TAKHNK2E

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/TAKHNK2EXDT75XEYNBQLJE7S53 \
  | 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: 981476ab44b8e7fedc986860b493f2eee04f0697df9893f9bb895169d656c0ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9053fc2eeeb517e2356997b8d3fddf533e14962739e0696622ad0e9b7d95a68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-04-20T05:35:12Z",
    "title_canon_sha256": "3a6a83c8be881b5fd3b6ad7bb0c5359eb97a06af73ec4a1fcb2e4e467e3decc5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04940",
    "kind": "arxiv",
    "version": 1
  }
}