Pith Number

pith:NGK4I7BQ

pith:2018:NGK4I7BQPD6UQOZ4UUHIIQKBES

not attested not anchored not stored refs pending

The emergence of space and time

Christian Wuthrich

arxiv:1804.02184 v1 · 2018-04-06 · physics.hist-ph · 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{NGK4I7BQPD6UQOZ4UUHIIQKBES}

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	2026-05-18T00:19:05.604709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6995c47c3078fd483b3ca50e84414124a9853ed31c4cb84caaf3d8a478da0045

Aliases

arxiv: 1804.02184 · arxiv_version: 1804.02184v1 · doi: 10.48550/arxiv.1804.02184 · pith_short_12: NGK4I7BQPD6U · pith_short_16: NGK4I7BQPD6UQOZ4 · pith_short_8: NGK4I7BQ

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/NGK4I7BQPD6UQOZ4UUHIIQKBES \
  | 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: 6995c47c3078fd483b3ca50e84414124a9853ed31c4cb84caaf3d8a478da0045

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc6ceb9b4067e5b20426eb6d8b1f3b7cac080c82522a50d78321766c2d29095c",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2018-04-06T10:08:41Z",
    "title_canon_sha256": "efc545d31c5fe6ad89097073a8adc28057b4600c00a58d1f3c93403412a3fe02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02184",
    "kind": "arxiv",
    "version": 1
  }
}