Pith Number

pith:KD5DFRHC

pith:2015:KD5DFRHCZDQEDTJEHYC7K6LUSE

not attested not anchored not stored refs pending

CTA telescopes as deep-space lasercom ground receivers

Alberto Carrasco-Casado, Jose Manuel Sanchez-Pena, Ricardo Vergaz

arxiv:1512.00002 v1 · 2015-11-30 · astro-ph.IM · physics.ins-det

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KD5DFRHCZDQEDTJEHYC7K6LUSE}

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	2026-05-18T01:25:33.037301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50fa32c4e2c8e041cd243e05f579749112f9a56b7652252b1c7e9ab5f69f1e12

Aliases

arxiv: 1512.00002 · arxiv_version: 1512.00002v1 · doi: 10.48550/arxiv.1512.00002 · pith_short_12: KD5DFRHCZDQE · pith_short_16: KD5DFRHCZDQEDTJE · pith_short_8: KD5DFRHC

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/KD5DFRHCZDQEDTJEHYC7K6LUSE \
  | 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: 50fa32c4e2c8e041cd243e05f579749112f9a56b7652252b1c7e9ab5f69f1e12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90bfd5e08406cb1136b71698349540f547553588a1526191430685e5e8df10ab",
    "cross_cats_sorted": [
      "physics.ins-det"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-11-30T04:00:43Z",
    "title_canon_sha256": "06f12cefc31d57f6bb981deecbcd84a649eb2d63dcfa7c45f8c4428e1be6ef26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.00002",
    "kind": "arxiv",
    "version": 1
  }
}