Pith Number

pith:Y22H4NSB

pith:2015:Y22H4NSBTGO4XJTPWFPMX34SAJ

not attested not anchored not stored refs pending

Simulating Deep Hubble Images With Semi-empirical Models of Galaxy Formation

Alexander S. Szalay, Manuchehr Taghizadeh-Popp, Richard L. White, S. Michael Fall

arxiv:1501.01556 v2 · 2015-01-06 · astro-ph.GA · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y22H4NSBTGO4XJTPWFPMX34SAJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

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	2026-05-18T02:18:58.185788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6b47e3641999dcba66fb15ecbef92026c8e03eeb1f59b0dd70d96e408c1620e

Aliases

arxiv: 1501.01556 · arxiv_version: 1501.01556v2 · doi: 10.48550/arxiv.1501.01556 · pith_short_12: Y22H4NSBTGO4 · pith_short_16: Y22H4NSBTGO4XJTP · pith_short_8: Y22H4NSB

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/Y22H4NSBTGO4XJTPWFPMX34SAJ \
  | 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: c6b47e3641999dcba66fb15ecbef92026c8e03eeb1f59b0dd70d96e408c1620e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3413eb43b30ee0c3a28c699318535593ac008d3a8252addb222c15eb3593c858",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-01-06T19:14:15Z",
    "title_canon_sha256": "c6b51bcea1e041a613e2dfd697471f59861d101afc84d7647d722bb1e338af32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.01556",
    "kind": "arxiv",
    "version": 2
  }
}