Pith Number

pith:QBGMJDHM

pith:2019:QBGMJDHM4MI47YFI6AV63PIZQH

not attested not anchored not stored refs pending

The VISCACHA survey - I. Overview and First Results

Andr\'es E. Piatti, Angeles P\'erez-Villegas, Beatriz Barbuy, Bruno Dias, Bruno Quint, David Sanmartim, Eduardo Bica, Francisco F.S. Maia, Jo\~ao F.C. Santos Jr., Jose A. Hernandez-Jimenez, Leandro de O. Kerber, Luciano Fraga, Mateus S. Angelo, Orlando J. Katime Santrich, Pieter Westera, Raphael A. P. Oliveira, Rodrigo G. Vieira, Stefano O. Souza

arxiv:1902.01959 v1 · 2019-02-05 · astro-ph.GA

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

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	2026-05-17T23:54:38.214965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

804cc48cece311cfe0a8f02bedbd1981f3ac00d8b110a4632a15499210393869

Aliases

arxiv: 1902.01959 · arxiv_version: 1902.01959v1 · doi: 10.48550/arxiv.1902.01959 · pith_short_12: QBGMJDHM4MI4 · pith_short_16: QBGMJDHM4MI47YFI · pith_short_8: QBGMJDHM

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/QBGMJDHM4MI47YFI6AV63PIZQH \
  | 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: 804cc48cece311cfe0a8f02bedbd1981f3ac00d8b110a4632a15499210393869

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d5b712be29d28bad2d7bf15de529195d899afee53bd56b88ecc72470fed18d2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-02-05T22:28:55Z",
    "title_canon_sha256": "e1f8033dd4a4d3649549aa5e80ce955fb287b2a7de2227bee8d3a11246c51552"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01959",
    "kind": "arxiv",
    "version": 1
  }
}