Pith Number

pith:3DQI77KM

pith:2010:3DQI77KMBRS7VWM66MX2GGKCPK

not attested not anchored not stored refs pending

Deep 21-cm HI Observations at z~0.1: The Precursor to the Arecibo Ultra Deep Survey

Barbara Catinella, Emmanuel Momjian, Karen O'Neil, Lister Staveley-Smith, Mark Calabretta, Martin Meyer, Martin Zwaan, Robert Minchin, Wolfram Freudling

arxiv:1011.0877 v1 · 2010-11-03 · 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{3DQI77KMBRS7VWM66MX2GGKCPK}

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	2026-05-18T02:04:53.274495Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8e08ffd4c0c65fad99ef32fa319427a9b46a0f42eaf26c15d48385671bcb92a

Aliases

arxiv: 1011.0877 · arxiv_version: 1011.0877v1 · doi: 10.48550/arxiv.1011.0877 · pith_short_12: 3DQI77KMBRS7 · pith_short_16: 3DQI77KMBRS7VWM6 · pith_short_8: 3DQI77KM

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/3DQI77KMBRS7VWM66MX2GGKCPK \
  | 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: d8e08ffd4c0c65fad99ef32fa319427a9b46a0f42eaf26c15d48385671bcb92a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77abc37e313695c9d92a898bcb0006797c275bf1e2b684bdfbaf9b4183b5cd9b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-11-03T13:35:08Z",
    "title_canon_sha256": "6450d2e1ad438437e780985d1ab88911e0992d1d1790a37188de4000c85c8973"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.0877",
    "kind": "arxiv",
    "version": 1
  }
}