Pith Number

pith:JB2FLHBC

pith:1995:JB2FLHBCCGZUJHPN3VAL2UE567

not attested not anchored not stored refs pending

Photoionization Effects During Galaxy Formation

Matthias Steinmetz

arxiv:astro-ph/9502013 v1 · 1995-02-03 · astro-ph

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	2026-05-18T01:07:42.427796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4874559c2211b3449deddd40bd509df7f47590a20f8c3ab470e42045b81ab4f6

Aliases

arxiv: astro-ph/9502013 · arxiv_version: astro-ph/9502013v1 · doi: 10.48550/arxiv.astro-ph/9502013 · pith_short_12: JB2FLHBCCGZU · pith_short_16: JB2FLHBCCGZUJHPN · pith_short_8: JB2FLHBC

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/JB2FLHBCCGZUJHPN3VAL2UE567 \
  | 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: 4874559c2211b3449deddd40bd509df7f47590a20f8c3ab470e42045b81ab4f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "963d3f0a54e48bd0e586f506e8e78bec11f99359ea3a6408b00f428cd676428c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-02-03T10:20:06Z",
    "title_canon_sha256": "d985f15e2708419a64f2c953376aa52e69c1c49d8d80b4ccc9b6a04fec4abf4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9502013",
    "kind": "arxiv",
    "version": 1
  }
}