Pith Number

pith:WEY5P3OM

pith:2021:WEY5P3OMOV26DS2UWCGZWQGRMJ

not attested not anchored not stored refs pending

Functional principal component analysis of radio-optical reference frame tie

Valeri V. Makarov

arxiv:2103.15784 v1 · 2021-03-29 · 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{WEY5P3OMOV26DS2UWCGZWQGRMJ}

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	2026-07-05T02:47:06.248338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b131d7edcc7575e1cb54b08d9b40d16248efea258eb74ee71ee40c2baa57e990

Aliases

arxiv: 2103.15784 · arxiv_version: 2103.15784v1 · doi: 10.48550/arxiv.2103.15784 · pith_short_12: WEY5P3OMOV26 · pith_short_16: WEY5P3OMOV26DS2U · pith_short_8: WEY5P3OM

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/WEY5P3OMOV26DS2UWCGZWQGRMJ \
  | 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: b131d7edcc7575e1cb54b08d9b40d16248efea258eb74ee71ee40c2baa57e990

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8832f107afb9466803e14d3a7b65d044fed53d10bfb3133b4cd011eccb30eda6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-03-29T17:24:44Z",
    "title_canon_sha256": "9ce46a68d12da00185730d17f5eec7e1e920cff152944e5cc988d837a82f8c07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.15784",
    "kind": "arxiv",
    "version": 1
  }
}