Pith Number

pith:YPU5CUUI

pith:2014:YPU5CUUIKDMYACQLQ6GZSZGKXC

not attested not anchored not stored refs pending

A simple argument for dark matter as an effect of slightly modified gravity

Peter K.F. Kuhfittig

arxiv:1403.5490 v2 · 2014-03-21 · 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{YPU5CUUIKDMYACQLQ6GZSZGKXC}

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	2026-05-18T02:43:00.528374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3e9d1528850d9800a0b878d9964cab88873b20b7837c4ad9feaee6b536ab940

Aliases

arxiv: 1403.5490 · arxiv_version: 1403.5490v2 · doi: 10.48550/arxiv.1403.5490 · pith_short_12: YPU5CUUIKDMY · pith_short_16: YPU5CUUIKDMYACQL · pith_short_8: YPU5CUUI

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/YPU5CUUIKDMYACQLQ6GZSZGKXC \
  | 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: c3e9d1528850d9800a0b878d9964cab88873b20b7837c4ad9feaee6b536ab940

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90c5c70b0ac826c59abef29e6b527a698f90de9f632d6c51458fadad3bed20de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-03-21T15:17:24Z",
    "title_canon_sha256": "71e108fe7baaa6d9fbe3ff6640d9121d45b30d5ca5f841759600b931934e7c7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5490",
    "kind": "arxiv",
    "version": 2
  }
}