Pith Number

pith:VP3DKLYB

pith:2020:VP3DKLYBCFQWFKUOWW2IP4I5N4

not attested not anchored not stored refs pending

Mapping discrete galaxies at cosmic dawn with 21-centimeter observations

Anastasia Fialkov, Itamar Reis, Rennan Barkana

arxiv:2008.04914 v1 · 2020-08-11 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VP3DKLYBCFQWFKUOWW2IP4I5N4}

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	2026-07-05T07:16:29.663232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abf6352f01116162aa8eb5b487f11d6f21fd5691418d843b8e8b40a26efce45e

Aliases

arxiv: 2008.04914 · arxiv_version: 2008.04914v1 · doi: 10.48550/arxiv.2008.04914 · pith_short_12: VP3DKLYBCFQW · pith_short_16: VP3DKLYBCFQWFKUO · pith_short_8: VP3DKLYB

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/VP3DKLYBCFQWFKUOWW2IP4I5N4 \
  | 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: abf6352f01116162aa8eb5b487f11d6f21fd5691418d843b8e8b40a26efce45e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "daa10d32a26ca196c1c7c41878d9faaf7d570bd27b08ede2e757d73dbbb102ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-08-11T18:00:01Z",
    "title_canon_sha256": "2ecb7c5e5a3b4bbee25721940bb82cc8ce34fffc9ea09f9fecbcfbd6fc4e8afc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.04914",
    "kind": "arxiv",
    "version": 1
  }
}