Pith Number

pith:MF23FS5I

pith:2021:MF23FS5I5YBWM7TK3SJWXT4YSS

not attested not anchored not stored refs pending

Tall Towers on the Moon

Amia Ross, Joost Vlassak, Martin Elvis, Sephora Ruppert

arxiv:2103.00612 v2 · 2021-02-28 · astro-ph.EP · physics.pop-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{MF23FS5I5YBWM7TK3SJWXT4YSS}

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	2026-07-05T03:54:40.857149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6175b2cba8ee03667e6adc936bcf9894a99812823eca024253064facd20ff77d

Aliases

arxiv: 2103.00612 · arxiv_version: 2103.00612v2 · doi: 10.48550/arxiv.2103.00612 · pith_short_12: MF23FS5I5YBW · pith_short_16: MF23FS5I5YBWM7TK · pith_short_8: MF23FS5I

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/MF23FS5I5YBWM7TK3SJWXT4YSS \
  | 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: 6175b2cba8ee03667e6adc936bcf9894a99812823eca024253064facd20ff77d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8b8d247a53b2827d94f51103750af9a63ff7733ee7a9e84c0d95d9d26c50195",
    "cross_cats_sorted": [
      "physics.pop-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-02-28T20:42:55Z",
    "title_canon_sha256": "3b607bc9b20c0f2fe35525cd8fc1da7456213c0eee520f3371fbbbdcc450f22d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.00612",
    "kind": "arxiv",
    "version": 2
  }
}