Pith Number

pith:GFG6TVVD

pith:2020:GFG6TVVDXSP74P3MP6DLVQNTQP

not attested not anchored not stored refs pending

Quantum gravity and gravitational-wave astronomy

Gianluca Calcagni

arxiv:2012.08251 v2 · 2020-12-15 · gr-qc · astro-ph.CO · 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{GFG6TVVDXSP74P3MP6DLVQNTQP}

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	2026-07-05T03:20:19.391288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

314de9d6a3bc9ffe3f6c7f86bac1b383dd96086ae1baceec55b77069637ad643

Aliases

arxiv: 2012.08251 · arxiv_version: 2012.08251v2 · doi: 10.48550/arxiv.2012.08251 · pith_short_12: GFG6TVVDXSP7 · pith_short_16: GFG6TVVDXSP74P3M · pith_short_8: GFG6TVVD

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/GFG6TVVDXSP74P3MP6DLVQNTQP \
  | 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: 314de9d6a3bc9ffe3f6c7f86bac1b383dd96086ae1baceec55b77069637ad643

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d07854d54977620327c3d10b064109da35a500979680784758225c518c696a8",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-12-15T12:39:52Z",
    "title_canon_sha256": "1110254bd34516fb21bbce9d07c1d5e3dceeeea6284356473f22c0ace33adcff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.08251",
    "kind": "arxiv",
    "version": 2
  }
}