Pith Number

pith:Y5GM3O3K

pith:2019:Y5GM3O3K6NX5VEJST4CWTM2G5T

not attested not anchored not stored refs pending

Physical Parameters for Stable $f(R)$ Models

Gauranga C Samanta, Nisha Godani

arxiv:1908.04408 v1 · 2019-08-06 · 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{Y5GM3O3K6NX5VEJST4CWTM2G5T}

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	2026-07-04T23:55:13.559489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c74ccdbb6af36fda91329f0569b346ecef1cf8964b7760730f00274c0b75c00c

Aliases

arxiv: 1908.04408 · arxiv_version: 1908.04408v1 · doi: 10.48550/arxiv.1908.04408 · pith_short_12: Y5GM3O3K6NX5 · pith_short_16: Y5GM3O3K6NX5VEJS · pith_short_8: Y5GM3O3K

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/Y5GM3O3K6NX5VEJST4CWTM2G5T \
  | 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: c74ccdbb6af36fda91329f0569b346ecef1cf8964b7760730f00274c0b75c00c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c50e971e1030ba8647bb8c75febbf4d592fc692f95f3ea37e2126496edf24fa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-08-06T03:00:23Z",
    "title_canon_sha256": "df3df7d132397e6ca8295c311e15e20bc9b511d0380b80c519c261eec8b0b868"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04408",
    "kind": "arxiv",
    "version": 1
  }
}