Pith Number

pith:6O7CPRCQ

pith:2018:6O7CPRCQ6UTGFNWCPWG536XF6Y

not attested not anchored not stored refs pending

Axion dark matter and the 21-cm signal

Pierre Sikivie

arxiv:1805.05577 v2 · 2018-05-15 · astro-ph.CO · 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{6O7CPRCQ6UTGFNWCPWG536XF6Y}

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	2026-05-18T00:09:09.246249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3be27c450f52662b6c27d8dddfae5f63f55eaab81f581f7db88ff7b681cc8a0

Aliases

arxiv: 1805.05577 · arxiv_version: 1805.05577v2 · doi: 10.48550/arxiv.1805.05577 · pith_short_12: 6O7CPRCQ6UTG · pith_short_16: 6O7CPRCQ6UTGFNWC · pith_short_8: 6O7CPRCQ

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/6O7CPRCQ6UTGFNWCPWG536XF6Y \
  | 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: f3be27c450f52662b6c27d8dddfae5f63f55eaab81f581f7db88ff7b681cc8a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f9e1b0ed9e8bbeb09436060fb78d6dbb0f9c75eabea6d8d8533d9ef334c162b",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-05-15T06:02:46Z",
    "title_canon_sha256": "af4bd24fdf0df7e4473bff508f0e3341423fde6c19d5f219e1eb9e8f05339add"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05577",
    "kind": "arxiv",
    "version": 2
  }
}