Pith Number

pith:SFQR64AN

pith:2019:SFQR64ANKCH7PF5UI3PWPM56CS

not attested not anchored not stored refs pending

The Type II-Plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor

Alexei V. Filippenko, Andrew W. Howard, Anthony L. Piro, Benjamin T. Jeffers, Brody Conner, Dan Milisavljevic, Douglas C. Leonard, Edward Falcon, Howard Isaacson, Ian J.M. Crossfield, Jennifer E. Andrews, Julia C. Hestenes, Justyn R. Maund, Keto Zhang, Knox S. Long, Molly R. Kosiarek, Nathan Smith, Ori D. Fox, Patrick L. Kelly, Richard Wilson, Sahana Kumar, Samantha M. Stegman, Sameen Yunus, Sanyum Channa, Schuyler D. Van Dyk, Stuart P. Littlefair, Sundar Srinivasan, Thomas de Jaeger, Thomas G. Brink, Timothy Butterley, Timothy W. Ross, Vik S. Dhillon, Viktoriya Morozova, Weikang Zheng

arxiv:1903.03872 v2 · 2019-03-09 · astro-ph.HE

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	2026-05-17T23:47:25.433147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91611f700d508ff797b446df67b3be14816aa570a1928051764b0fa523b262a9

Aliases

arxiv: 1903.03872 · arxiv_version: 1903.03872v2 · doi: 10.48550/arxiv.1903.03872 · pith_short_12: SFQR64ANKCH7 · pith_short_16: SFQR64ANKCH7PF5U · pith_short_8: SFQR64AN

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/SFQR64ANKCH7PF5UI3PWPM56CS \
  | 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: 91611f700d508ff797b446df67b3be14816aa570a1928051764b0fa523b262a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5bc9489546a7c60b3a8411b16a35627e4e22d39be765f163971c13bc50ecfc26",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-03-09T21:23:04Z",
    "title_canon_sha256": "e482341ffe90945197706b1320fe923e8aa68a1e42c79bc9b2e8f64fd1398a4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03872",
    "kind": "arxiv",
    "version": 2
  }
}