Pith Number

pith:6PKNOYZ2

pith:2012:6PKNOYZ2TB3R5UPZVIBQNTQVFO

not attested not anchored not stored refs pending

Torsion and accelerating expansion of the universe in quadratic gravitation

Guoying Chee, Yongxin Guo

arxiv:1205.5419 v2 · 2012-05-24 · 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{6PKNOYZ2TB3R5UPZVIBQNTQVFO}

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	2026-05-18T01:57:17.914564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3d4d7633a98771ed1f9aa0306ce152b8a2a5a1bdcea68be43a9458d4163d60a

Aliases

arxiv: 1205.5419 · arxiv_version: 1205.5419v2 · doi: 10.48550/arxiv.1205.5419 · pith_short_12: 6PKNOYZ2TB3R · pith_short_16: 6PKNOYZ2TB3R5UPZ · pith_short_8: 6PKNOYZ2

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/6PKNOYZ2TB3R5UPZVIBQNTQVFO \
  | 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: f3d4d7633a98771ed1f9aa0306ce152b8a2a5a1bdcea68be43a9458d4163d60a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3231c0c66ac36ba5113b2d7f36df142281764379dc66f55fde1c0618fe1dcc74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-05-24T12:18:43Z",
    "title_canon_sha256": "c79357400a235213d5c8badbfafc88d2566a9ca8fa58f78c00db12759101b294"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.5419",
    "kind": "arxiv",
    "version": 2
  }
}