Pith Number

pith:JBMSXI6T

pith:2012:JBMSXI6TEK72VFEWUP7ZPKE3IO

not attested not anchored not stored refs pending

Ubiquitous seeding of supermassive black holes by direct collapse

Bhaskar Agarwal, Claudio Dalla Vecchia, Eyal Neistein, Jarrett L. Johnson, Mario Livio, Sadegh Khochfar

arxiv:1205.6464 v2 · 2012-05-29 · 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{JBMSXI6TEK72VFEWUP7ZPKE3IO}

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	2026-05-18T01:57:15.929429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48592ba3d322bfaa9496a3ff97a89b4382050894f413f2e51d80dc76bff14842

Aliases

arxiv: 1205.6464 · arxiv_version: 1205.6464v2 · doi: 10.48550/arxiv.1205.6464 · pith_short_12: JBMSXI6TEK72 · pith_short_16: JBMSXI6TEK72VFEW · pith_short_8: JBMSXI6T

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/JBMSXI6TEK72VFEWUP7ZPKE3IO \
  | 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: 48592ba3d322bfaa9496a3ff97a89b4382050894f413f2e51d80dc76bff14842

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a11d1a529977f514cd7b331ee9582c9a19742b27102ca4b027f2de91815500f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-05-29T19:55:11Z",
    "title_canon_sha256": "df83f99a212678b4f0c683044b6bbe2c672f22c0e532533835dca9362c29ef38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.6464",
    "kind": "arxiv",
    "version": 2
  }
}