Pith Number

pith:4XGAT3RL

pith:2012:4XGAT3RL2IWZ2P7VPUM5JWUP6P

not attested not anchored not stored refs pending

FRW type of cosmology with a Chaplygin gas

D. Panigrahi, S. Chatterjee

arxiv:1205.3768 v3 · 2012-05-16 · gr-qc

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T00:50:58.213722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5cc09ee2bd22d9d3ff57d19d4da8ff3c6f408d1d6c7b2c1911784cd1b0466d9

Aliases

arxiv: 1205.3768 · arxiv_version: 1205.3768v3 · doi: 10.48550/arxiv.1205.3768 · pith_short_12: 4XGAT3RL2IWZ · pith_short_16: 4XGAT3RL2IWZ2P7V · pith_short_8: 4XGAT3RL

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/4XGAT3RL2IWZ2P7VPUM5JWUP6P \
  | 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: e5cc09ee2bd22d9d3ff57d19d4da8ff3c6f408d1d6c7b2c1911784cd1b0466d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e7300620d6e1d80c929afb814b382798413b289adc6375cb30fdfd95e30020b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-05-16T19:21:45Z",
    "title_canon_sha256": "aa0b2e8ea2ad977d296d532d403d541fbd6ed32253d566f7a1248b4a74489db2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3768",
    "kind": "arxiv",
    "version": 3
  }
}