Pith Number

pith:NGD5S2BA

pith:2016:NGD5S2BAAI5NRDRRJDNIGXL2L7

not attested not anchored not stored refs pending

Test of source selection for constructing a more stable and uniform celestial reference frame

J.-C. Liu, N. Liu, Z. Zhu

arxiv:1612.01685 v1 · 2016-12-06 · astro-ph.GA · 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{NGD5S2BAAI5NRDRRJDNIGXL2L7}

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	2026-05-18T00:50:56.272023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6987d96820023ad88e3148da835d7a5fea15d5d689b32a65fd44359e3011fc78

Aliases

arxiv: 1612.01685 · arxiv_version: 1612.01685v1 · doi: 10.48550/arxiv.1612.01685 · pith_short_12: NGD5S2BAAI5N · pith_short_16: NGD5S2BAAI5NRDRR · pith_short_8: NGD5S2BA

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/NGD5S2BAAI5NRDRRJDNIGXL2L7 \
  | 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: 6987d96820023ad88e3148da835d7a5fea15d5d689b32a65fd44359e3011fc78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c354d2ed19dc5ddde32038d8bebcd5c2a02bdc11f56579947014e2f2534b8c6f",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-12-06T06:53:35Z",
    "title_canon_sha256": "115417d318b56d29c41928a9d310d432f74ff29fd90aacf06812f979e8968432"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.01685",
    "kind": "arxiv",
    "version": 1
  }
}