Pith Number

pith:6MLVO3XG

pith:2019:6MLVO3XGZ5C4X6NHTQYE4L6VJO

not attested not anchored not stored refs pending

Quasi-cosmological Traversable Wormholes in $f(R)$ Gravity

Hanif Golchin, Mohammad Reza Mehdizadeh

arxiv:1908.04378 v1 · 2019-08-12 · 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{6MLVO3XGZ5C4X6NHTQYE4L6VJO}

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	2026-07-05T00:13:53.173987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f317576ee6cf45cbf9a79c304e2fd54bbb54a19e4babdaf05b57de2c50dddea5

Aliases

arxiv: 1908.04378 · arxiv_version: 1908.04378v1 · doi: 10.48550/arxiv.1908.04378 · pith_short_12: 6MLVO3XGZ5C4 · pith_short_16: 6MLVO3XGZ5C4X6NH · pith_short_8: 6MLVO3XG

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/6MLVO3XGZ5C4X6NHTQYE4L6VJO \
  | 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: f317576ee6cf45cbf9a79c304e2fd54bbb54a19e4babdaf05b57de2c50dddea5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7f3b008e61deec067cf495d7adf2b888dd39f9d34a17d76a0464a69b4eac913",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-08-12T20:58:58Z",
    "title_canon_sha256": "23b54e768534fbd75948d16e0cfc2ed25d86e4208f0f86ec50d81428ed9e09bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04378",
    "kind": "arxiv",
    "version": 1
  }
}