Pith Number

pith:4564PZQ6

pith:2012:4564PZQ6HCVYOLFGKM63QMIUNB

not attested not anchored not stored refs pending

Development and first year of results from the heliometer of Observatorio Nacional

Alexandre H. Andrei, Alissandro Coletti, Costantino Sigismondi, Eugenio Reis Neto, Jucira L. Penna, Luiz C. Oliveira, Sergio C. Boscardin, Victor A. d'Avila

arxiv:1211.0677 v1 · 2012-11-04 · astro-ph.SR · 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{4564PZQ6HCVYOLFGKM63QMIUNB}

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	2026-05-18T01:53:26.229716Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e77dc7e61e38ab872ca6533db8311468489c7b32fd531116cc5fb421c0db301a

Aliases

arxiv: 1211.0677 · arxiv_version: 1211.0677v1 · doi: 10.48550/arxiv.1211.0677 · pith_short_12: 4564PZQ6HCVY · pith_short_16: 4564PZQ6HCVYOLFG · pith_short_8: 4564PZQ6

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/4564PZQ6HCVYOLFGKM63QMIUNB \
  | 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: e77dc7e61e38ab872ca6533db8311468489c7b32fd531116cc5fb421c0db301a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee1834ed988314aea805c6331e70079555647101682ee9b0130e7f3f8e75084b",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-11-04T12:48:04Z",
    "title_canon_sha256": "e87e75ca09fbc8ecda1dae350bb0cecc58782a0a8d481cece8b2b14704e9089b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.0677",
    "kind": "arxiv",
    "version": 1
  }
}