Pith Number

pith:P3B3XMET

pith:2025:P3B3XMETLTJKJJG7VAP2OMDAPK

not attested not anchored not stored refs pending

Brightness Characteristics of the Qianfan Satellites and Evidence That Some Are Tumbling

Anthony Mallama, Jay Respler, Jeff Warner, Richard E. Cole, Roger Spinner, Stephan Hellmich

arxiv:2505.07194 v1 · 2025-05-12 · 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{P3B3XMETLTJKJJG7VAP2OMDAPK}

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	2026-07-05T11:01:44.058423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ec3bbb0935cd2a4a4dfa81fa730607a99621a00f4f15a1aaac05bf8de150871

Aliases

arxiv: 2505.07194 · arxiv_version: 2505.07194v1 · doi: 10.48550/arxiv.2505.07194 · pith_short_12: P3B3XMETLTJK · pith_short_16: P3B3XMETLTJKJJG7 · pith_short_8: P3B3XMET

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/P3B3XMETLTJKJJG7VAP2OMDAPK \
  | 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: 7ec3bbb0935cd2a4a4dfa81fa730607a99621a00f4f15a1aaac05bf8de150871

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a183315f63145a71a571b4de99b93107818be4be5de5eaec8be91e4829a78082",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2025-05-12T02:54:16Z",
    "title_canon_sha256": "4599ba145cd12793064cfdad39423f42f7de9c5d8c3e47b7361b11139bb383fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.07194",
    "kind": "arxiv",
    "version": 1
  }
}