Pith Number

pith:LDKOAUDY

pith:2010:LDKOAUDYVGLDAL2KA6FJMYKY6F

not attested not anchored not stored refs pending

Near term measurements with 21 cm intensity mapping: neutral hydrogen fraction and BAO at z<2

Kiyoshi Wesley Masui, Patrick McDonald, Ue-Li Pen

arxiv:1001.4811 v2 · 2010-01-26 · 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{LDKOAUDYVGLDAL2KA6FJMYKY6F}

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	2026-05-18T04:39:28.825258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58d4e05078a996302f4a078a966158f17a115a81c171e090b981cd9d1595c408

Aliases

arxiv: 1001.4811 · arxiv_version: 1001.4811v2 · doi: 10.48550/arxiv.1001.4811 · pith_short_12: LDKOAUDYVGLD · pith_short_16: LDKOAUDYVGLDAL2K · pith_short_8: LDKOAUDY

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/LDKOAUDYVGLDAL2KA6FJMYKY6F \
  | 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: 58d4e05078a996302f4a078a966158f17a115a81c171e090b981cd9d1595c408

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa2453341ee847b7e90143e15cf245191b8caa721533bb72ac1d0995df75a5ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-26T21:59:46Z",
    "title_canon_sha256": "2e652efda15c120171f0e175b2c2611d8f5aac5cc46cc8eccba03aa81141612b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.4811",
    "kind": "arxiv",
    "version": 2
  }
}