Pith Number

pith:MDT7NBC2

pith:2018:MDT7NBC235LVFYK4PAMJJ6CK5O

not attested not anchored not stored refs pending

The Goldilocks problem of the quasar contribution to reionization

Cristiano Porciani, Enrico Garaldi, Michele Compostella

arxiv:1809.10144 v2 · 2018-09-26 · 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{MDT7NBC235LVFYK4PAMJJ6CK5O}

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	2026-05-17T23:55:54.972378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60e7f6845adf5752e15c781894f84aeb9c67ce0f964c9fb3eed03280466d005c

Aliases

arxiv: 1809.10144 · arxiv_version: 1809.10144v2 · doi: 10.48550/arxiv.1809.10144 · pith_short_12: MDT7NBC235LV · pith_short_16: MDT7NBC235LVFYK4 · pith_short_8: MDT7NBC2

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/MDT7NBC235LVFYK4PAMJJ6CK5O \
  | 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: 60e7f6845adf5752e15c781894f84aeb9c67ce0f964c9fb3eed03280466d005c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee3a8b64b0aa8aeae73d8cc641a34aed46e31c02fac447e99767a268c030396f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-09-26T18:00:00Z",
    "title_canon_sha256": "e1037db0beedb0f6ddc092ff87dc8cfa5093aa652b5647588e04afe4f471af1d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10144",
    "kind": "arxiv",
    "version": 2
  }
}