Pith Number

pith:BU2JX3UD

pith:2019:BU2JX3UDDTJEGEOLLHBN7NLW2K

not attested not anchored not stored refs pending

Towards a novel approach to semi-classical gravity

Ward Struyve

arxiv:1902.02188 v1 · 2019-02-02 · 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{BU2JX3UDDTJEGEOLLHBN7NLW2K}

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	2026-05-17T23:54:37.672937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d349bee831cd24311cb59c2dfb576d2bfb5dee0a3ad90cc72628cdc8d8e9a21

Aliases

arxiv: 1902.02188 · arxiv_version: 1902.02188v1 · doi: 10.48550/arxiv.1902.02188 · pith_short_12: BU2JX3UDDTJE · pith_short_16: BU2JX3UDDTJEGEOL · pith_short_8: BU2JX3UD

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/BU2JX3UDDTJEGEOLLHBN7NLW2K \
  | 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: 0d349bee831cd24311cb59c2dfb576d2bfb5dee0a3ad90cc72628cdc8d8e9a21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1f36e093ef95651b0cdbfae071d15fb7eb4430eb4ee1fdbd2f3d89f177dab10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-02-02T23:19:12Z",
    "title_canon_sha256": "46775d5b340a748be1ba1e95573ac5a173f41e0b9ad8c7842106c29c44856098"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.02188",
    "kind": "arxiv",
    "version": 1
  }
}