Pith Number

pith:UNPA6FFE

pith:2021:UNPA6FFEN3RIRUHE2GDD7LLDOF

not attested not anchored not stored refs pending

Cosmology in scalar-tensor $f(R,T)$ gravity

Francisco S. N. Lobo, Jo\~ao Lu\'is Rosa, Tiago B. Gon\c{c}alves

arxiv:2112.02541 v2 · 2021-12-05 · 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{UNPA6FFEN3RIRUHE2GDD7LLDOF}

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	2026-07-05T04:04:44.111051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a35e0f14a46ee288d0e4d1863fad637143244d8715d5196687729a90403a8643

Aliases

arxiv: 2112.02541 · arxiv_version: 2112.02541v2 · doi: 10.48550/arxiv.2112.02541 · pith_short_12: UNPA6FFEN3RI · pith_short_16: UNPA6FFEN3RIRUHE · pith_short_8: UNPA6FFE

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/UNPA6FFEN3RIRUHE2GDD7LLDOF \
  | 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: a35e0f14a46ee288d0e4d1863fad637143244d8715d5196687729a90403a8643

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8be189a8c2d8ff04c1c46caf3aaeb74e669ed6ba2ccb505ce1eed5085f347ff6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-12-05T11:12:39Z",
    "title_canon_sha256": "c1338193f3761fb7e00308130f03a4738b9d494b6b0e75ea310a27baa9adb619"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.02541",
    "kind": "arxiv",
    "version": 2
  }
}