Pith Number

pith:52VQSPQZ

pith:2009:52VQSPQZWFZBEF2TOWH3I3CSLW

not attested not anchored not stored refs pending

Inflation with multiple sound speeds: a model of multiple DBI type actions and non-Gaussianities

Hai-Ying Xia, Yi-Fu Cai

arxiv:0904.0062 v1 · 2009-04-01 · hep-th · astro-ph.CO · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{52VQSPQZWFZBEF2TOWH3I3CSLW}

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	2026-05-18T04:33:16.169038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eeab093e19b172121753758fb46c525d9010283b9ea6eca3a9ded1e55abc57c1

Aliases

arxiv: 0904.0062 · arxiv_version: 0904.0062v1 · doi: 10.48550/arxiv.0904.0062 · pith_short_12: 52VQSPQZWFZB · pith_short_16: 52VQSPQZWFZBEF2T · pith_short_8: 52VQSPQZ

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/52VQSPQZWFZBEF2TOWH3I3CSLW \
  | 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: eeab093e19b172121753758fb46c525d9010283b9ea6eca3a9ded1e55abc57c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67f4fc3577853a9239920d83c4a7084d1a63f7b4afea7f7cbea7bee49e2fd1b2",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-04-01T05:51:02Z",
    "title_canon_sha256": "74d3a8aa20f082054ecb27b79fb9ae1a17f3fb5ba176c4df4c17c5788b43ab6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0062",
    "kind": "arxiv",
    "version": 1
  }
}