Pith Number

pith:3N6TK4U4

pith:2020:3N6TK4U4TR4NP453XRHBK32BML

not attested not anchored not stored refs pending

Next step in gravity and cosmology: fundamental theory or data-driven models?

Gianluca Calcagni

arxiv:2009.00846 v1 · 2020-09-02 · 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{3N6TK4U4TR4NP453XRHBK32BML}

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	2026-07-05T01:32:29.251790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db7d35729c9c78d7f3bbbc4e156f4162d08a415efa791d5db36c3dbdc04cda5e

Aliases

arxiv: 2009.00846 · arxiv_version: 2009.00846v1 · doi: 10.48550/arxiv.2009.00846 · pith_short_12: 3N6TK4U4TR4N · pith_short_16: 3N6TK4U4TR4NP453 · pith_short_8: 3N6TK4U4

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/3N6TK4U4TR4NP453XRHBK32BML \
  | 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: db7d35729c9c78d7f3bbbc4e156f4162d08a415efa791d5db36c3dbdc04cda5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a10f71090369b6a67d1a63770aaef8f5c9c665b548446a4e1482d0b75a41dd58",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-09-02T06:52:09Z",
    "title_canon_sha256": "5bdd9868b5d509ded33a2a83112403c685481f2a4c41c6b1bbcd5771da79db9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.00846",
    "kind": "arxiv",
    "version": 1
  }
}