Pith Number

pith:IW5UDHMV

pith:2018:IW5UDHMVGIRE3M5YEIEXMLLZUD

not attested not anchored not stored refs pending

Cosmology and Dark Matter

Igor Tkachev

arxiv:1802.02414 v1 · 2018-02-07 · 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{IW5UDHMVGIRE3M5YEIEXMLLZUD}

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	2026-05-18T00:24:03.638229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45bb419d9532224db3b82209762d79a0f2244500d7e9bf0795026dfd7cd739fa

Aliases

arxiv: 1802.02414 · arxiv_version: 1802.02414v1 · doi: 10.48550/arxiv.1802.02414 · pith_short_12: IW5UDHMVGIRE · pith_short_16: IW5UDHMVGIRE3M5Y · pith_short_8: IW5UDHMV

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/IW5UDHMVGIRE3M5YEIEXMLLZUD \
  | 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: 45bb419d9532224db3b82209762d79a0f2244500d7e9bf0795026dfd7cd739fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47f360dd146cbbe587edc8d7e55ed6660d380cd5cab378b18369720f6d210a74",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-02-07T13:36:04Z",
    "title_canon_sha256": "6c859457e2d3ed63c3bf0ad2a87fe5ceb9b1b58585d68f5704a0897f295ef7f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02414",
    "kind": "arxiv",
    "version": 1
  }
}