Pith Number

pith:FL45F2DO

pith:2017:FL45F2DOAPM2K7WRUWRXVHI7IG

not attested not anchored not stored refs pending

Why there is no Newtonian backreaction

Nick Kaiser

arxiv:1703.08809 v2 · 2017-03-26 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FL45F2DOAPM2K7WRUWRXVHI7IG}

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	2026-05-18T00:40:06.640650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2af9d2e86e03d9a57ed1a5a37a9d1f41829b44e56680f1d88ad8597251bc359f

Aliases

arxiv: 1703.08809 · arxiv_version: 1703.08809v2 · doi: 10.48550/arxiv.1703.08809 · pith_short_12: FL45F2DOAPM2 · pith_short_16: FL45F2DOAPM2K7WR · pith_short_8: FL45F2DO

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/FL45F2DOAPM2K7WRUWRXVHI7IG \
  | 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: 2af9d2e86e03d9a57ed1a5a37a9d1f41829b44e56680f1d88ad8597251bc359f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ca9935dc398c41708f07b2b7ce81b9161972ced684cd743e4aaee226cffb5b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-03-26T11:51:16Z",
    "title_canon_sha256": "90c31b3d24b7ea491d2c8e4f854f6d1ac04cee96c2ca6998265c4a5ab5b309f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.08809",
    "kind": "arxiv",
    "version": 2
  }
}