Pith Number

pith:HUGYPGN2

pith:2013:HUGYPGN2GJS2J5A4WB57CMA6ZX

not attested not anchored not stored refs pending

Optical observations of SN 2011fe

A.F. Valeev, D.Yu.Tsvetkov, E.A. Barsukova, I.M. Volkov, N.A. Katysheva, N.N. Pavlyuk, S.Yu. Shugarov, V.P. Goranskij

arxiv:1311.3484 v1 · 2013-11-14 · 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	2026-05-18T03:07:11.374280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d0d8799ba3265a4f41cb07bf1301ecdf331525478e943554c7cfc1ce2e10c9f

Aliases

arxiv: 1311.3484 · arxiv_version: 1311.3484v1 · doi: 10.48550/arxiv.1311.3484 · pith_short_12: HUGYPGN2GJS2 · pith_short_16: HUGYPGN2GJS2J5A4 · pith_short_8: HUGYPGN2

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/HUGYPGN2GJS2J5A4WB57CMA6ZX \
  | 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: 3d0d8799ba3265a4f41cb07bf1301ecdf331525478e943554c7cfc1ce2e10c9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e5b2999dc33aaea15d53457d97f42bfebba002e4dfe360ad45168db9bc7200a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-11-14T12:32:04Z",
    "title_canon_sha256": "16c227e1262501055d1cbe8a366f43c368f61af3e569034add7d297b0e818189"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3484",
    "kind": "arxiv",
    "version": 1
  }
}