Pith Number

pith:SIFUXFVL

pith:2012:SIFUXFVLI7NRPLAFDSKJSZZARJ

not attested not anchored not stored refs pending

The Formation of the First Massive Black Holes

Zolt\'an Haiman

arxiv:1203.6075 v1 · 2012-03-27 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SIFUXFVLI7NRPLAFDSKJSZZARJ}

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.

Cited by

1 paper in Pith

Little Red Dots at z~2 in EIGER reveal a gentle decline with respect to their peak number density at z~5

Receipt and verification

First computed	2026-05-18T01:58:01.280935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

920b4b96ab47db17ac051c949967208a6034296f8bcbad5209e476bbae73a447

Aliases

arxiv: 1203.6075 · arxiv_version: 1203.6075v1 · doi: 10.48550/arxiv.1203.6075 · pith_short_12: SIFUXFVLI7NR · pith_short_16: SIFUXFVLI7NRPLAF · pith_short_8: SIFUXFVL

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/SIFUXFVLI7NRPLAFDSKJSZZARJ \
  | 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: 920b4b96ab47db17ac051c949967208a6034296f8bcbad5209e476bbae73a447

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4de2d010b10543c8d5d40c0cd5d41aa98549d5c0c85a8a24f3f247fca4cc62c3",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-27T20:04:40Z",
    "title_canon_sha256": "c0a99f9084d3d6eb7f233f5d0c1c107d5e0c30038ca553fe68491897c6f6a084"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6075",
    "kind": "arxiv",
    "version": 1
  }
}