Pith Number

pith:H6DVZO7F

pith:2019:H6DVZO7FQKMS2DX4K4SOJQVNSD

not attested not anchored not stored refs pending

A new kind of cyclic universe

Anna Ijjas, Paul J. Steinhardt

arxiv:1904.08022 v1 · 2019-04-16 · gr-qc · astro-ph.CO · 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{H6DVZO7FQKMS2DX4K4SOJQVNSD}

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.

Cited by

2 papers in Pith

Dynamical system analysis in descending dark energy model

Assessing observational constraints on dark energy

Receipt and verification

First computed	2026-05-17T23:40:55.195633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3f875cbbe582992d0efc5724e4c2ad90fd02199d1d7913e79f32b67371b6add8

Aliases

arxiv: 1904.08022 · arxiv_version: 1904.08022v1 · doi: 10.48550/arxiv.1904.08022 · pith_short_12: H6DVZO7FQKMS · pith_short_16: H6DVZO7FQKMS2DX4 · pith_short_8: H6DVZO7F

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/H6DVZO7FQKMS2DX4K4SOJQVNSD \
  | 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: 3f875cbbe582992d0efc5724e4c2ad90fd02199d1d7913e79f32b67371b6add8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "991339788b16a1a9ea55e310901d5d2774d7b9c2b06b394c0fc382e75ee6a55c",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-04-16T23:51:30Z",
    "title_canon_sha256": "750d093802b012625263ab2222b5c875eae500a25829f0e96483b94a8fde7af8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08022",
    "kind": "arxiv",
    "version": 1
  }
}