Pith Number

pith:ETGQI3X3

pith:2018:ETGQI3X3UW6BUDJARC24EI53FC

not attested not anchored not stored refs pending

Variation of a Signal in Schwarzschild Spacetime

Huan Liu, Ran Tao, Xiang-Gen Xia

arxiv:1807.08914 v4 · 2018-07-24 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ETGQI3X3UW6BUDJARC24EI53FC}

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	2026-05-17T23:51:14.404645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24cd046efba5bc1a0d2088b5c223bb28acfec4250a9caeefbe1c4093739e35cb

Aliases

arxiv: 1807.08914 · arxiv_version: 1807.08914v4 · doi: 10.48550/arxiv.1807.08914 · pith_short_12: ETGQI3X3UW6B · pith_short_16: ETGQI3X3UW6BUDJA · pith_short_8: ETGQI3X3

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/ETGQI3X3UW6BUDJARC24EI53FC \
  | 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: 24cd046efba5bc1a0d2088b5c223bb28acfec4250a9caeefbe1c4093739e35cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5bb6b0acc2c13fd5e7f219757c06fc8e36437414bd99cd1629ad06e2559241f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-07-24T05:52:40Z",
    "title_canon_sha256": "77bbd1402dd382fd7267f83a2d38820861cb4769160781966625121f6ea8c12f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.08914",
    "kind": "arxiv",
    "version": 4
  }
}