Pith Number

pith:3IVJIRAI

pith:2021:3IVJIRAI43LFS7BV7MSTQ5BEJX

not attested not anchored not stored refs pending

Realizing quantum nodes in space for cost-effective, global quantum communication: in-orbit results and next steps

Alexander Ling, Alexander Lohrmann, Ali Anwar, Ayesha Reezwana, Chithrabhanu Perumangatt, Srihari Sivasankaran, Subash Sachidananda, Tanvirul Islam, Tom Vergoossen

arxiv:2104.10839 v2 · 2021-04-22 · quant-ph · 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{3IVJIRAI43LFS7BV7MSTQ5BEJX}

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	2026-07-05T02:34:21.887972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

da2a944408e6d6597c35fb253874244dda484ceeaa2ec9b93282d92a9bc7143a

Aliases

arxiv: 2104.10839 · arxiv_version: 2104.10839v2 · doi: 10.48550/arxiv.2104.10839 · pith_short_12: 3IVJIRAI43LF · pith_short_16: 3IVJIRAI43LFS7BV · pith_short_8: 3IVJIRAI

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/3IVJIRAI43LFS7BV7MSTQ5BEJX \
  | 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: da2a944408e6d6597c35fb253874244dda484ceeaa2ec9b93282d92a9bc7143a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06c5f7d5e0965bfb3002c38b331182980fbc5f1af69c7437bb35b620342944cb",
    "cross_cats_sorted": [
      "physics.ins-det"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2021-04-22T02:59:23Z",
    "title_canon_sha256": "38cd32c265abd6bf51338ff9ddcb7d7422d13552f929d74a43c79c0ff5df956a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.10839",
    "kind": "arxiv",
    "version": 2
  }
}