Pith Number

pith:4FEE7GPK

pith:2011:4FEE7GPKVRYBAGCKQH5WAUIB3V

not attested not anchored not stored refs pending

Nucleosynthesis origin of PG 1159 stars, Sakurai's object and of rare subclasses of presolar grains

E. Zinner, L. Piersanti, M. Jadhav, O. Straniero, R. Gallino, S. Bisterzo, S. Cristallo

arxiv:1107.0562 v1 · 2011-07-04 · 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	2026-05-18T04:18:53.759428Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1484f99eaac7010184a81fb605101dd6b38eafc030486626bf8e89ed4f56974

Aliases

arxiv: 1107.0562 · arxiv_version: 1107.0562v1 · doi: 10.48550/arxiv.1107.0562 · pith_short_12: 4FEE7GPKVRYB · pith_short_16: 4FEE7GPKVRYBAGCK · pith_short_8: 4FEE7GPK

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/4FEE7GPKVRYBAGCKQH5WAUIB3V \
  | 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: e1484f99eaac7010184a81fb605101dd6b38eafc030486626bf8e89ed4f56974

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c4d71935025d3fa036feaf008890770e4003138ab24c32b75cc3bbc5852fa87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-07-04T08:54:17Z",
    "title_canon_sha256": "6d4ed27b61136850b3551c52ada8b599633561a78699690e29fdbc9ed93d4292"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.0562",
    "kind": "arxiv",
    "version": 1
  }
}