Pith Number

pith:MH2R5MZJ

pith:2015:MH2R5MZJSQAZK5MKV5CWF4UDC5

not attested not anchored not stored refs pending

Direct collapse black hole formation via high-velocity collisions of protogalaxies

Eli Visbal, Kazumi Kashiyama, Kohei Inayoshi

arxiv:1504.00676 v2 · 2015-04-02 · astro-ph.GA · astro-ph.CO

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.

Cited by

1 paper in Pith

Direct Collapse Black Hole Candidates from Decaying Dark Matter

Receipt and verification

First computed	2026-05-18T01:32:18.677480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61f51eb329940195758aaf4562f2831776f384a6ce1c0b99b9ac92c88efd8952

Aliases

arxiv: 1504.00676 · arxiv_version: 1504.00676v2 · doi: 10.48550/arxiv.1504.00676 · pith_short_12: MH2R5MZJSQAZ · pith_short_16: MH2R5MZJSQAZK5MK · pith_short_8: MH2R5MZJ

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/MH2R5MZJSQAZK5MKV5CWF4UDC5 \
  | 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: 61f51eb329940195758aaf4562f2831776f384a6ce1c0b99b9ac92c88efd8952

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97522e079117965f865f3cc2073b957cca92241aa514d292de7eb513cc6ade3c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-02T20:00:27Z",
    "title_canon_sha256": "a4c8e9432cbc5ef8ada9953a030581ae81a7f462024d12fc8b64782fdd23141e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.00676",
    "kind": "arxiv",
    "version": 2
  }
}