Pith Number

pith:TVUTIZZC

pith:2018:TVUTIZZCBRX2FBDE3XYPWL76R7

not attested not anchored not stored refs pending

First observations with the 25 cm telescope of the Shumen Astronomical Observatory

Borislav Borisov, Diana Kjurkchieva, Dinko Dimitrov, Dragomir Marchev, Sunay Ibryamov, Velimir Popov

arxiv:1812.06388 v1 · 2018-12-16 · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TVUTIZZCBRX2FBDE3XYPWL76R7}

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	2026-05-17T23:58:10.371532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d693467220c6fa28464ddf0fb2ffe8fd65f1b3fced86b33df31900dbae8ab05

Aliases

arxiv: 1812.06388 · arxiv_version: 1812.06388v1 · doi: 10.48550/arxiv.1812.06388 · pith_short_12: TVUTIZZCBRX2 · pith_short_16: TVUTIZZCBRX2FBDE · pith_short_8: TVUTIZZC

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/TVUTIZZCBRX2FBDE3XYPWL76R7 \
  | 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: 9d693467220c6fa28464ddf0fb2ffe8fd65f1b3fced86b33df31900dbae8ab05

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52227f545f3d025a7b5fca22b1bfffaf89319a1ac50652a84a6e14583c6d7ef1",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-12-16T04:32:40Z",
    "title_canon_sha256": "a86444c94b38c286964620279dfd8b627ac0f7cea5bdf215eb7ad74ba975ed9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.06388",
    "kind": "arxiv",
    "version": 1
  }
}