Pith Number

pith:SRZSXRV4

pith:2025:SRZSXRV4EPRS5NK4EXZTX2XD2P

not attested not anchored not stored refs pending

Physics. Tasks With Solutions

Hanna M. Akopian, Ivan L. Andronov, Lidiia L. Chinarova, Nina V. Savchuk, Serhii I. Iovchev

arxiv:2507.00064 v1 · 2025-06-27 · physics.class-ph · 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{SRZSXRV4EPRS5NK4EXZTX2XD2P}

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	2026-07-05T11:29:36.100557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94732bc6bc23e32eb55c25f33beae3d3d41f734b360571115692154529838430

Aliases

arxiv: 2507.00064 · arxiv_version: 2507.00064v1 · doi: 10.48550/arxiv.2507.00064 · pith_short_12: SRZSXRV4EPRS · pith_short_16: SRZSXRV4EPRS5NK4 · pith_short_8: SRZSXRV4

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/SRZSXRV4EPRS5NK4EXZTX2XD2P \
  | 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: 94732bc6bc23e32eb55c25f33beae3d3d41f734b360571115692154529838430

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38c8ef5d31189c01caf63a3d77864d8846f3094b9829fc387f51860d912aa094",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2025-06-27T19:50:24Z",
    "title_canon_sha256": "175b68082dde368948e8f78da84fec0ebdf7936749079b9954a39c457fb97395"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.00064",
    "kind": "arxiv",
    "version": 1
  }
}