Pith Number

pith:QHB7GUQN

pith:2003:QHB7GUQNBBODGHI7AMLIO76B7B

not attested not anchored not stored refs pending

Small-scale CMB polarization anisotropies due to tangled primordial magnetic fields

John. D. Barrow, Kandaswamy Subramanian, T. R. Seshadri

arxiv:astro-ph/0303014 v2 · 2003-03-02 · astro-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHB7GUQNBBODGHI7AMLIO76B7B}

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	2026-07-04T16:36:34.571566Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81c3f3520d085c331d1f0316877fc1f8571c1b5ae39910dd31c221781899636b

Aliases

arxiv: astro-ph/0303014 · arxiv_version: astro-ph/0303014v2 · doi: 10.48550/arxiv.astro-ph/0303014 · pith_short_12: QHB7GUQNBBOD · pith_short_16: QHB7GUQNBBODGHI7 · pith_short_8: QHB7GUQN

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/QHB7GUQNBBODGHI7AMLIO76B7B \
  | 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: 81c3f3520d085c331d1f0316877fc1f8571c1b5ae39910dd31c221781899636b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f558ae1d2ca7ee262729d950b818af4933129c5a6b8fb62e0f44d74b4b2e6d01",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-03-02T13:03:56Z",
    "title_canon_sha256": "26da5d18a0310498c9b31d908b0fba8a5de7d57b9cfe227b2f4b1908928ef99a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0303014",
    "kind": "arxiv",
    "version": 2
  }
}