Pith Number

pith:EBZRKFUY

pith:2021:EBZRKFUYHRD2MJVXYYUS3HPCIF

not attested not anchored not stored refs pending

Report on Mega-Constellations to the Government of Canada and the Canadian Space Agency

Aaron Boley, Andrew Falle, James Di Francesco, Jennifer Howse, JJ Kavelaars, Pauline Barmby, Samantha Lawler

arxiv:2104.05733 v1 · 2021-04-12 · astro-ph.IM · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EBZRKFUYHRD2MJVXYYUS3HPCIF}

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	2026-07-05T02:31:24.431731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20731516983c47a626b7c6292d9de241708eae0b08daac273ef0892ef697440f

Aliases

arxiv: 2104.05733 · arxiv_version: 2104.05733v1 · doi: 10.48550/arxiv.2104.05733 · pith_short_12: EBZRKFUYHRD2 · pith_short_16: EBZRKFUYHRD2MJVX · pith_short_8: EBZRKFUY

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/EBZRKFUYHRD2MJVXYYUS3HPCIF \
  | 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: 20731516983c47a626b7c6292d9de241708eae0b08daac273ef0892ef697440f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa38037106ea607fd784e5b9800ab55cbed51e3e0b438cc7f7dc2e825c1ac3bf",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-04-12T18:00:19Z",
    "title_canon_sha256": "1a62d6bf16441252e0b91d93c239dce6bda180efc94b43bfd87716c335fb021c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.05733",
    "kind": "arxiv",
    "version": 1
  }
}