Pith Number

pith:3NDMMINU

pith:2017:3NDMMINUD6CAVAQ3OAWP3W6BUT

not attested not anchored not stored refs pending

Does the Universe have a Hard Drive?

Zura Kakushadze

arxiv:1701.07161 v1 · 2017-01-25 · physics.pop-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3NDMMINUD6CAVAQ3OAWP3W6BUT}

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	2026-05-18T00:51:40.897994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db46c621b41f840a821b702cfddbc1a4ea1e0f444bc73677c42e83f0546ccda5

Aliases

arxiv: 1701.07161 · arxiv_version: 1701.07161v1 · doi: 10.48550/arxiv.1701.07161 · pith_short_12: 3NDMMINUD6CA · pith_short_16: 3NDMMINUD6CAVAQ3 · pith_short_8: 3NDMMINU

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/3NDMMINUD6CAVAQ3OAWP3W6BUT \
  | 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: db46c621b41f840a821b702cfddbc1a4ea1e0f444bc73677c42e83f0546ccda5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd49ac0fb55fd3647335b306bba11ebbce649ccf4954f3071b253e842148462c",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2017-01-25T05:02:20Z",
    "title_canon_sha256": "ad72d77e1686d3accae80d81e4f2c47a7bd05fc285513fd743f96b6012bd2240"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.07161",
    "kind": "arxiv",
    "version": 1
  }
}