Pith Number

pith:5BTPSXMJ

pith:2021:5BTPSXMJ2WABV3NNACEPJZEXRX

not attested not anchored not stored refs pending

A Portuguese radar tracking sensor for Space Debris monitoring

Bruno Coelho, Domingos Barbosa, Domingos Nunes, Jo\~ao Pandeirada, Jos\'e Eduardo, Jos\'e Freitas, Miguel Bergano, Paulo Marques, Val\'erio Ribeiro

arxiv:2111.02232 v2 · 2021-11-03 · astro-ph.IM · cs.SY · eess.SP · eess.SY · physics.ins-det · physics.space-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5BTPSXMJ2WABV3NNACEPJZEXRX}

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	2026-07-05T03:46:37.581672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e866f95d89d5801aedad0088f4e4978df6594a9e3fe15162f9dcba9b9dfbbb06

Aliases

arxiv: 2111.02232 · arxiv_version: 2111.02232v2 · doi: 10.48550/arxiv.2111.02232 · pith_short_12: 5BTPSXMJ2WAB · pith_short_16: 5BTPSXMJ2WABV3NN · pith_short_8: 5BTPSXMJ

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/5BTPSXMJ2WABV3NNACEPJZEXRX \
  | 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: e866f95d89d5801aedad0088f4e4978df6594a9e3fe15162f9dcba9b9dfbbb06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7444cdb752d291bf379f118fee9d632de88e729620821b2077065a295a054b0b",
    "cross_cats_sorted": [
      "cs.SY",
      "eess.SP",
      "eess.SY",
      "physics.ins-det",
      "physics.space-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-11-03T13:54:24Z",
    "title_canon_sha256": "e137fec3b5ecbfc5df52958db1bb19864a593a8d18a2e92c3b8e93f0c5f45f40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.02232",
    "kind": "arxiv",
    "version": 2
  }
}