Pith Number

pith:VC57YIL5

pith:2018:VC57YIL53DRPH3SHSIX5XQXDWF

not attested not anchored not stored refs pending

Constraining Primordial Black Holes with the EDGES 21-cm Absorption Signal

Andi Hektor, Gert H\"utsi, Hardi Veerm\"ae, Luca Marzola, Martti Raidal, Ville Vaskonen

arxiv:1803.09697 v3 · 2018-03-26 · 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{VC57YIL53DRPH3SHSIX5XQXDWF}

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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.

Cited by

1 paper in Pith

Primordial black holes and the velocity acoustic oscillations features in 21 cm signals from the cosmic Dark Ages

Receipt and verification

First computed	2026-05-18T00:11:05.677877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8bbfc217dd8e2f3ee47922fdbc2e3b17ad21a0095a0415eb4c3ec0d0a3f82e3

Aliases

arxiv: 1803.09697 · arxiv_version: 1803.09697v3 · doi: 10.48550/arxiv.1803.09697 · pith_short_12: VC57YIL53DRP · pith_short_16: VC57YIL53DRPH3SH · pith_short_8: VC57YIL5

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/VC57YIL53DRPH3SHSIX5XQXDWF \
  | 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: a8bbfc217dd8e2f3ee47922fdbc2e3b17ad21a0095a0415eb4c3ec0d0a3f82e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5133487223d43fd0256df265934c47a129ecdc6ab113feaeaff0864f4b599358",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-03-26T16:16:20Z",
    "title_canon_sha256": "d68b4a9ac7a3f39b6065815305e42e860fe91550ca7a6ddc374d79334f41e345"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09697",
    "kind": "arxiv",
    "version": 3
  }
}