Pith Number

pith:3PF6OUOV

pith:2007:3PF6OUOVTSBIGUTRO6HAYUFRVX

not attested not anchored not stored refs pending

Comment on "Preacceleration without radiation: The nonexistence of preradiation phenomenon," by J.A. Heras [Am. J. Phys. 74, 1025 (2006)]

V. Hnizdo

arxiv:physics/0702121 v1 · 2007-02-14 · physics.class-ph · physics.gen-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3PF6OUOVTSBIGUTRO6HAYUFRVX}

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	2026-05-18T04:34:18.485474Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbcbe751d59c82835271778e0c50b1adc4b91c0f0ccf6a873c486d59bdefa22c

Aliases

arxiv: physics/0702121 · arxiv_version: physics/0702121v1 · doi: 10.48550/arxiv.physics/0702121 · pith_short_12: 3PF6OUOVTSBI · pith_short_16: 3PF6OUOVTSBIGUTR · pith_short_8: 3PF6OUOV

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/3PF6OUOVTSBIGUTRO6HAYUFRVX \
  | 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: dbcbe751d59c82835271778e0c50b1adc4b91c0f0ccf6a873c486d59bdefa22c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cc05595310deb8738e4a5c0f3c36fc5a5145d43ec37777e814029a6644afaa7",
    "cross_cats_sorted": [
      "physics.gen-ph"
    ],
    "license": "",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2007-02-14T19:42:00Z",
    "title_canon_sha256": "4918b46f04f024c487461adb63d86f6873f07d1e7b40ae5a5bf043edafacb207"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0702121",
    "kind": "arxiv",
    "version": 1
  }
}