Pith Number

pith:NDKIFZTP

pith:2011:NDKIFZTPO2FXFZN4WWQTK3E4XU

not attested not anchored not stored refs pending

The Telescopes and Processes of the Australian Astronomical Observatory

Andrew M. Hopkins, Chris M. Springob, Fred G. Watson, Gayandhi M. De Silva, Matthew M. Colless (Australian Astronomical Observatory), Stuart D. Ryder

arxiv:1108.5024 v1 · 2011-08-25 · 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{NDKIFZTPO2FXFZN4WWQTK3E4XU}

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	2026-05-18T04:14:45.551538Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68d482e66f768b72e5bcb5a1356c9cbd039ed5764ebf563d93d2eb98c9cd26fe

Aliases

arxiv: 1108.5024 · arxiv_version: 1108.5024v1 · doi: 10.48550/arxiv.1108.5024 · pith_short_12: NDKIFZTPO2FX · pith_short_16: NDKIFZTPO2FXFZN4 · pith_short_8: NDKIFZTP

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/NDKIFZTPO2FXFZN4WWQTK3E4XU \
  | 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: 68d482e66f768b72e5bcb5a1356c9cbd039ed5764ebf563d93d2eb98c9cd26fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d773fd35951d07dc97235687b6dce34f6c2728dc2628c99163f488e10514a3e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-08-25T07:14:49Z",
    "title_canon_sha256": "e04a7e4603fd709ceb9cefcb3d18edf74246989b57af5bf238e4ce589dcb2a2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5024",
    "kind": "arxiv",
    "version": 1
  }
}