Pith Number

pith:JQYT6MRQ

pith:2009:JQYT6MRQTIX52MC3AX5GXJJY5P

not attested not anchored not stored refs pending

Some Uncomfortable Thoughts on the Nature of Gravity, Cosmology, and the Early Universe

L P Grishchuk

arxiv:0903.4395 v2 · 2009-03-25 · gr-qc · astro-ph.CO · hep-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{JQYT6MRQTIX52MC3AX5GXJJY5P}

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	2026-05-18T02:35:00.143354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c313f32309a2fdd305b05fa6ba538ebeb32f476fcd6c9794dc97e0797e9fff5

Aliases

arxiv: 0903.4395 · arxiv_version: 0903.4395v2 · doi: 10.48550/arxiv.0903.4395 · pith_short_12: JQYT6MRQTIX5 · pith_short_16: JQYT6MRQTIX52MC3 · pith_short_8: JQYT6MRQ

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/JQYT6MRQTIX52MC3AX5GXJJY5P \
  | 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: 4c313f32309a2fdd305b05fa6ba538ebeb32f476fcd6c9794dc97e0797e9fff5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3ddb6462047562a721fbb75770bd8414f3cc16f85b3546bb62b5fe88602da39",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-03-25T18:11:54Z",
    "title_canon_sha256": "f76ed16f9952b944d59e305773b3dc45484833afd32b78c4d67b0ddd55ac3f97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4395",
    "kind": "arxiv",
    "version": 2
  }
}