Pith Number

pith:3RQ42GIS

pith:2009:3RQ42GISYOWIMY44IZCLXROQV2

not attested not anchored not stored refs pending

Application of the Trend Filtering Algorithm on the MACHO Database

D. L. Welch, G. Kovacs, J. Szulagyi

arxiv:0903.1165 v1 · 2009-03-06 · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3RQ42GISYOWIMY44IZCLXROQV2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:14:36.908670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc61cd1912c3ac86639c4644bbc5d0aeb8c3baa65b4f2236afbc990088ad545e

Aliases

arxiv: 0903.1165 · arxiv_version: 0903.1165v1 · doi: 10.48550/arxiv.0903.1165 · pith_short_12: 3RQ42GISYOWI · pith_short_16: 3RQ42GISYOWIMY44 · pith_short_8: 3RQ42GIS

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/3RQ42GISYOWIMY44IZCLXROQV2 \
  | 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: dc61cd1912c3ac86639c4644bbc5d0aeb8c3baa65b4f2236afbc990088ad545e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b73d75c29473754595d86272ce3b81fd94dd45022d8e7394b1514cedd14550a",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-03-06T08:09:18Z",
    "title_canon_sha256": "535898993d351c9595c1f31a37116b820a811619144ca981636c9a5f3105b27c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.1165",
    "kind": "arxiv",
    "version": 1
  }
}