Pith Number

pith:IYQ3SUKD

pith:2019:IYQ3SUKDYB4UXNEHYATAYQ3W5D

not attested not anchored not stored refs pending

Calibration and monitoring of the ASTRI-Horn telescope by using the night-sky background measured by the photon-statistics ("variance") method

A. La Barbera (for the CTA ASTRI Project), A. Segreto, M. C. Maccarone, O. Catalano, T. Mineo

arxiv:1909.08750 v1 · 2019-09-19 · 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{IYQ3SUKDYB4UXNEHYATAYQ3W5D}

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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	2026-07-05T00:05:37.344400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4621b95143c0794bb487c0260c4376e8f94aeb8d8a3e19c633fb37d168129336

Aliases

arxiv: 1909.08750 · arxiv_version: 1909.08750v1 · doi: 10.48550/arxiv.1909.08750 · pith_short_12: IYQ3SUKDYB4U · pith_short_16: IYQ3SUKDYB4UXNEH · pith_short_8: IYQ3SUKD

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/IYQ3SUKDYB4UXNEHYATAYQ3W5D \
  | 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: 4621b95143c0794bb487c0260c4376e8f94aeb8d8a3e19c633fb37d168129336

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afcd94b684a731986b6dea03a03cca805998c494c042412fe673f2ffc3f391f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-09-19T00:44:05Z",
    "title_canon_sha256": "a525ad5e121e928d07d5b50f0bcb7c02e610edb873868a1f6bfa0c9d5bb0714d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.08750",
    "kind": "arxiv",
    "version": 1
  }
}