Pith Number

pith:PYYGE4Z7

pith:2014:PYYGE4Z7UH222NNBA6AS7R2RVA

not attested not anchored not stored refs pending

Evidence for an external origin of heavy elements in hot DA white dwarfs

I. Hubeny, J.B. Holberg, J.K. Barstow, M.A. Barstow, S.L. Casewell

arxiv:1402.2164 v1 · 2014-02-10 · 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	2026-05-18T01:44:45.849611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e3062733fa1f5ad35a107812fc751a834f3c0e563c57fc35d5627b76b733d31

Aliases

arxiv: 1402.2164 · arxiv_version: 1402.2164v1 · doi: 10.48550/arxiv.1402.2164 · pith_short_12: PYYGE4Z7UH22 · pith_short_16: PYYGE4Z7UH222NNB · pith_short_8: PYYGE4Z7

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/PYYGE4Z7UH222NNBA6AS7R2RVA \
  | 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: 7e3062733fa1f5ad35a107812fc751a834f3c0e563c57fc35d5627b76b733d31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb14bdd8f8aadd9684be2f60fe2d0b5e3bc5ef947b971a4d61c3ee8be70fc51e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-02-10T14:32:44Z",
    "title_canon_sha256": "e7caec8813e3504143096d282a88c1ebc130704aa16ca5015771fa90ff5f2c8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.2164",
    "kind": "arxiv",
    "version": 1
  }
}