Pith Number

pith:4TVKOTLL

pith:2019:4TVKOTLL4R4U5VHW2GPHDXVUIL

not attested not anchored not stored refs pending

The impact of interference excision on 21-cm Epoch of Reionization power spectrum analyses

A. R. Offringa, F. Mertens, L. V. E. Koopmans

arxiv:1901.04752 v1 · 2019-01-15 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4TVKOTLL4R4U5VHW2GPHDXVUIL}

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	2026-05-17T23:51:30.263256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4eaa74d6be4794ed4f6d19e71deb442eaf8c839dec7a270af30ffa4a96e8612

Aliases

arxiv: 1901.04752 · arxiv_version: 1901.04752v1 · doi: 10.48550/arxiv.1901.04752 · pith_short_12: 4TVKOTLL4R4U · pith_short_16: 4TVKOTLL4R4U5VHW · pith_short_8: 4TVKOTLL

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/4TVKOTLL4R4U5VHW2GPHDXVUIL \
  | 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: e4eaa74d6be4794ed4f6d19e71deb442eaf8c839dec7a270af30ffa4a96e8612

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e52aaad0bdf8b81b738d56d4bfd36565eacabba68e7c72fcdbf1b558de15e14c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-01-15T10:42:05Z",
    "title_canon_sha256": "a13037593350db393966587a30361606f358f152a1eafb37f21c806883fa0bf7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04752",
    "kind": "arxiv",
    "version": 1
  }
}