Pith. sign in
Pith Number

pith:WSZEUGHW

pith:2004:WSZEUGHWXORNFZIWFHC7T2G77A
not attested not anchored not stored refs pending

Observing Trans-Planckian Signatures in the Cosmic Microwave Background

Hiranya Peiris, Richard Easther, William H Kinney

arxiv:astro-ph/0412613 v2 · 2004-12-23 · astro-ph · gr-qc · hep-ph · hep-th

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{WSZEUGHWXORNFZIWFHC7T2G77A}

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 2026-05-18T04:22:20.949706Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

b4b24a18f6bba2d2e51629c5f9e8dff809b95f1c4d66cc3a361e20f51db0e69e

Aliases

arxiv: astro-ph/0412613 · arxiv_version: astro-ph/0412613v2 · doi: 10.48550/arxiv.astro-ph/0412613 · pith_short_12: WSZEUGHWXORN · pith_short_16: WSZEUGHWXORNFZIW · pith_short_8: WSZEUGHW
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/WSZEUGHWXORNFZIWFHC7T2G77A \
  | 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: b4b24a18f6bba2d2e51629c5f9e8dff809b95f1c4d66cc3a361e20f51db0e69e
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "ecea3319160fc222081df3303c5cb6a6fa58cd76c1c329d9229d1705fcf6f6a2",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-12-23T14:23:44Z",
    "title_canon_sha256": "dc5d6a7e08814a557d7307228be355847c91837b8311092ecab6797d68a7f3ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0412613",
    "kind": "arxiv",
    "version": 2
  }
}