Pith Number

pith:RQFD3RNN

pith:2020:RQFD3RNNWPF2TPH5XBGFZS7ZEJ

not attested not anchored not stored refs pending

Cosmological constraints from higher-redshift gamma-ray burst, HII starburst galaxy, and quasar (and other) data

Bharat Ratra, Joseph Ryan, Narayan Khadka, Shulei Cao

arxiv:2009.12953 v2 · 2020-09-27 · astro-ph.CO · gr-qc · hep-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RQFD3RNNWPF2TPH5XBGFZS7ZEJ}

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	2026-07-05T02:06:52.325030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c0a3dc5adb3cba9bcfdb84c5ccbf92273ea64290a778e84293ce0e546ece7fa

Aliases

arxiv: 2009.12953 · arxiv_version: 2009.12953v2 · doi: 10.48550/arxiv.2009.12953 · pith_short_12: RQFD3RNNWPF2 · pith_short_16: RQFD3RNNWPF2TPH5 · pith_short_8: RQFD3RNN

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/RQFD3RNNWPF2TPH5XBGFZS7ZEJ \
  | 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: 8c0a3dc5adb3cba9bcfdb84c5ccbf92273ea64290a778e84293ce0e546ece7fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85ff257835b9944460c31eedd652c9e7e433bc888160ab2a2b0d6cadd9d3b3f0",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-09-27T21:08:03Z",
    "title_canon_sha256": "1e466b29f96dc6e61f3fb7cd6514fac05c5c659772d527525c5751eb7f1633e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.12953",
    "kind": "arxiv",
    "version": 2
  }
}