Pith Number

pith:F7EPKHR2

pith:2017:F7EPKHR2OXJEJXT4QB3BVCL3VV

not attested not anchored not stored refs pending

Supernova feedback in numerical simulations of galaxy formation: separating physics from numerics

Cambridge, Cambridge), Debora Sijacki (IoA/KICC, ITA, Matthew C. Smith (IoA/KICC, Oslo), Sijing Shen (IoA/KICC

arxiv:1709.03515 v2 · 2017-09-11 · astro-ph.GA

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	2026-05-18T00:17:27.159980Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2fc8f51e3a75d244de7c80761a897bad5a2a73bd207d2d88919db5ef63ce3836

Aliases

arxiv: 1709.03515 · arxiv_version: 1709.03515v2 · doi: 10.48550/arxiv.1709.03515 · pith_short_12: F7EPKHR2OXJE · pith_short_16: F7EPKHR2OXJEJXT4 · pith_short_8: F7EPKHR2

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/F7EPKHR2OXJEJXT4QB3BVCL3VV \
  | 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: 2fc8f51e3a75d244de7c80761a897bad5a2a73bd207d2d88919db5ef63ce3836

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9ee76ae60529fb70e18a675f999fa8172fe9d49056dc941576ff7d7b9ffd967",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-09-11T18:00:18Z",
    "title_canon_sha256": "615094b6084367b71abdfc523e5d18356d3eed49eacd4c1ba7b90d8c7cc009b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.03515",
    "kind": "arxiv",
    "version": 2
  }
}