Pith Number

pith:EZIV5HUF

pith:2014:EZIV5HUFVERUXLWN4Y3TR542W7

not attested not anchored not stored refs pending

Numerical predictions of surface effects during the 2029 close approach of asteroid 99942 Apophis

Derek C. Richardson, Patrick Michel, Ronald-Louis Ballouz, Stephen R. Schwartz, Yang Yu

arxiv:1408.0168 v1 · 2014-08-01 · 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{EZIV5HUFVERUXLWN4Y3TR542W7}

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	2026-05-18T02:46:03.699972Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26515e9e85a9234baecde63738f79ab7dac3e38a6e87810fcb587a3cf878dfa0

Aliases

arxiv: 1408.0168 · arxiv_version: 1408.0168v1 · doi: 10.48550/arxiv.1408.0168 · pith_short_12: EZIV5HUFVERU · pith_short_16: EZIV5HUFVERUXLWN · pith_short_8: EZIV5HUF

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/EZIV5HUFVERUXLWN4Y3TR542W7 \
  | 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: 26515e9e85a9234baecde63738f79ab7dac3e38a6e87810fcb587a3cf878dfa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92c23af8f13acc1713b0e781ae2eb71cc335a4248c882a223ac54a9c71c62db9",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2014-08-01T13:17:19Z",
    "title_canon_sha256": "03457a8a8d9cb7ba7d3de465a9b7856dc116a9e02eeb089685e3f49fef713671"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.0168",
    "kind": "arxiv",
    "version": 1
  }
}