Pith Number

pith:QJNVR4MQ

pith:2021:QJNVR4MQPSBQ4ZZJUOJETLLIEO

not attested not anchored not stored refs pending

Rescuing Palindromic Universes with Improved Recombination Modelling

Metha Prathaban, Will Handley

arxiv:2111.14588 v3 · 2021-11-29 · 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{QJNVR4MQPSBQ4ZZJUOJETLLIEO}

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	2026-07-05T04:30:39.712408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

825b58f1907c830e6729a39249ad68239481dd5d3440ff3cd932a0e30f7ff719

Aliases

arxiv: 2111.14588 · arxiv_version: 2111.14588v3 · doi: 10.48550/arxiv.2111.14588 · pith_short_12: QJNVR4MQPSBQ · pith_short_16: QJNVR4MQPSBQ4ZZJ · pith_short_8: QJNVR4MQ

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/QJNVR4MQPSBQ4ZZJUOJETLLIEO \
  | 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: 825b58f1907c830e6729a39249ad68239481dd5d3440ff3cd932a0e30f7ff719

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "880af9ce395be54a3b9de8460be1f95e098f0f41baa44894c9ff95dcd18f70c4",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-11-29T15:20:32Z",
    "title_canon_sha256": "a352f986640db67d817e43df37937723e7e038198891057049bf67898908fc9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.14588",
    "kind": "arxiv",
    "version": 3
  }
}