Pith Number

pith:7FKAMJJX

pith:2018:7FKAMJJXCDIN743PZKNONBX2KM

not attested not anchored not stored refs pending

Formation of the First Black Holes: Current observational status

Dominik R.G. Schleicher

arxiv:1807.06055 v2 · 2018-07-16 · astro-ph.GA · astro-ph.HE · 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{7FKAMJJXCDIN743PZKNONBX2KM}

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	2026-05-18T00:07:49.102262Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f95406253710d0dff36fca9ae686fa533a868c8320dc08a88fd2526fc0fd93e9

Aliases

arxiv: 1807.06055 · arxiv_version: 1807.06055v2 · doi: 10.48550/arxiv.1807.06055 · pith_short_12: 7FKAMJJXCDIN · pith_short_16: 7FKAMJJXCDIN743P · pith_short_8: 7FKAMJJX

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/7FKAMJJXCDIN743PZKNONBX2KM \
  | 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: f95406253710d0dff36fca9ae686fa533a868c8320dc08a88fd2526fc0fd93e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b82ce14acae43b0750dfbe88ace1caa2bf1605d1adf4fb084e3d600fd500509",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-16T18:44:30Z",
    "title_canon_sha256": "a49f06754b2532f6ba794275171774b958b8a691af4402332278d3c1a6fe3417"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06055",
    "kind": "arxiv",
    "version": 2
  }
}