Pith Number

pith:YPQLBCVB

pith:2012:YPQLBCVBPMMXLQVP3NCUS4HA4J

not attested not anchored not stored refs pending

SDSS Observations of Kuiper Belt Objects: Colors and Variability

Eran O. Ofek

arxiv:1202.1538 v1 · 2012-02-07 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YPQLBCVBPMMXLQVP3NCUS4HA4J}

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	2026-05-18T01:58:32.693685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3e0b08aa17b1975c2afdb454970e0e258b7cf4729cc95ceaa5ef72b2c392ccc

Aliases

arxiv: 1202.1538 · arxiv_version: 1202.1538v1 · doi: 10.48550/arxiv.1202.1538 · pith_short_12: YPQLBCVBPMMX · pith_short_16: YPQLBCVBPMMXLQVP · pith_short_8: YPQLBCVB

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/YPQLBCVBPMMXLQVP3NCUS4HA4J \
  | 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: c3e0b08aa17b1975c2afdb454970e0e258b7cf4729cc95ceaa5ef72b2c392ccc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6b895fe68d52072de633666d1d54a7c836995ed32fb88217f0973c92025b34f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-02-07T21:13:53Z",
    "title_canon_sha256": "1bb901d9c7c45a6e2686d6809dec2c717373e98394419dc1a83112e4b34a6008"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1538",
    "kind": "arxiv",
    "version": 1
  }
}