Pith Number

pith:M2EV3AC6

pith:2012:M2EV3AC6ZTSAORJVOJ2ALJ22OD

not attested not anchored not stored refs pending

Rapidly Accreting Supergiant Protostars: Embryos of Supermassive Black Holes?

Harold W. Yorke, Kazuyuki Omukai, Takashi Hosokawa

arxiv:1203.2613 v1 · 2012-03-12 · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M2EV3AC6ZTSAORJVOJ2ALJ22OD}

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	2026-05-18T01:58:09.778198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66895d805ecce4074535727405a75a70c839b1097c6ead84a10272e907377762

Aliases

arxiv: 1203.2613 · arxiv_version: 1203.2613v1 · doi: 10.48550/arxiv.1203.2613 · pith_short_12: M2EV3AC6ZTSA · pith_short_16: M2EV3AC6ZTSAORJV · pith_short_8: M2EV3AC6

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/M2EV3AC6ZTSAORJVOJ2ALJ22OD \
  | 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: 66895d805ecce4074535727405a75a70c839b1097c6ead84a10272e907377762

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dba789643da99a9d668bf8170a7594cba35ff922335a6f85c4613707170c6050",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-12T20:00:03Z",
    "title_canon_sha256": "32d6f408c71075761440eac8302085a2df78becf83542156fcf89f3f16dc41b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2613",
    "kind": "arxiv",
    "version": 1
  }
}