Pith Number

pith:B7PGP4RH

pith:2011:B7PGP4RH5ZU4656VBRCLF2DTBY

not attested not anchored not stored refs pending

Data-constrained reionization and its effects on cosmological parameters

Alessandro Melchiorri, Andrea Ferrara, Sourav Mitra, Stefania Pandolfi, T. Roy Choudhury

arxiv:1111.3570 v1 · 2011-11-15 · 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{B7PGP4RH5ZU4656VBRCLF2DTBY}

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	2026-05-18T03:23:12.517494Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0fde67f227ee69cf77d50c44b2e8730e396ad60b6555cce09eec5e19efd39e5c

Aliases

arxiv: 1111.3570 · arxiv_version: 1111.3570v1 · doi: 10.48550/arxiv.1111.3570 · pith_short_12: B7PGP4RH5ZU4 · pith_short_16: B7PGP4RH5ZU4656V · pith_short_8: B7PGP4RH

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/B7PGP4RH5ZU4656VBRCLF2DTBY \
  | 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: 0fde67f227ee69cf77d50c44b2e8730e396ad60b6555cce09eec5e19efd39e5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b91aa4c73ac1801c455df40e152d543df71c90ded46afad8cf64b612ea631578",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-15T16:29:03Z",
    "title_canon_sha256": "e260858345fac691b6fcb2aed2050ff9982744e0ff4fc664c10e0923c855d8a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3570",
    "kind": "arxiv",
    "version": 1
  }
}