Pith Number

pith:4ZVBSGOD

pith:2015:4ZVBSGOD6WQUASCOGMW7PW4CNX

not attested not anchored not stored refs pending

Unified universe history through phantom extended Chaplygin gas

B. Pourhassan

arxiv:1504.04173 v1 · 2015-04-15 · gr-qc · 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{4ZVBSGOD6WQUASCOGMW7PW4CNX}

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	2026-05-18T01:11:05.255907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e66a1919c3f5a140484e332df7db826def074962cab4f00943bd6f7175fe922b

Aliases

arxiv: 1504.04173 · arxiv_version: 1504.04173v1 · doi: 10.48550/arxiv.1504.04173 · pith_short_12: 4ZVBSGOD6WQU · pith_short_16: 4ZVBSGOD6WQUASCO · pith_short_8: 4ZVBSGOD

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/4ZVBSGOD6WQUASCOGMW7PW4CNX \
  | 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: e66a1919c3f5a140484e332df7db826def074962cab4f00943bd6f7175fe922b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "810fe7b89e97b3a7edfedad2efb60cc0f4745d14d93005f2af96e4bf4c1fbd58",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-04-15T19:49:58Z",
    "title_canon_sha256": "9d06a463176b0daa589ea4fc8caa50b42f4d702a16d0f54e8cde4191fbe36297"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04173",
    "kind": "arxiv",
    "version": 1
  }
}