Pith Number

pith:L6OKOZ4P

pith:2013:L6OKOZ4PT4DO4566JH5ROBUMW2

not attested not anchored not stored refs pending

Soft singularity crossing and transformation of matter properties

Alexander Yu. Kamenshchik, David Polarski, L\'aszl\'o \'A. Gergely, Vittorio Gorini, Zolt\'an Keresztes

arxiv:1304.6355 v2 · 2013-04-23 · gr-qc · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L6OKOZ4PT4DO4566JH5ROBUMW2}

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	2026-05-18T03:16:18.825238Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f9ca7678f9f06ee77de49fb17068cb6abde8da84a325356265f529a3e104180

Aliases

arxiv: 1304.6355 · arxiv_version: 1304.6355v2 · doi: 10.48550/arxiv.1304.6355 · pith_short_12: L6OKOZ4PT4DO · pith_short_16: L6OKOZ4PT4DO4566 · pith_short_8: L6OKOZ4P

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/L6OKOZ4PT4DO4566JH5ROBUMW2 \
  | 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: 5f9ca7678f9f06ee77de49fb17068cb6abde8da84a325356265f529a3e104180

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4454c7b31301b541efc8f1c35de3cc78b8a7e6c42390820dd29d67a62775da30",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-04-23T17:23:47Z",
    "title_canon_sha256": "f2cf8a174c51f830217688cea5633c66ba58cbaa424990532c865b1ffe48427a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6355",
    "kind": "arxiv",
    "version": 2
  }
}