Pith Number

pith:ASMZJ6JE

pith:2020:ASMZJ6JEVPCFTW4QA6GUZ4AQUO

not attested not anchored not stored refs pending

The Covid19Impact Survey: Assessing the Pulse of the COVID-19 Pandemic in Spain via 24 questions

Kirsten Roomp, Kristof Roomp, Nuria Oliver, Xavier Barber

arxiv:2004.01014 v2 · 2020-04-02 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ASMZJ6JEVPCFTW4QA6GUZ4AQUO}

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	2026-07-05T01:34:52.873872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

049994f924abc459db90078d4cf010a382b6ab0195ecfcf9fc3afe76da0d3cf2

Aliases

arxiv: 2004.01014 · arxiv_version: 2004.01014v2 · doi: 10.48550/arxiv.2004.01014 · pith_short_12: ASMZJ6JEVPCF · pith_short_16: ASMZJ6JEVPCFTW4Q · pith_short_8: ASMZJ6JE

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/ASMZJ6JEVPCFTW4QA6GUZ4AQUO \
  | 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: 049994f924abc459db90078d4cf010a382b6ab0195ecfcf9fc3afe76da0d3cf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21c4bb42cf10517cb1c7962cb1497f8256d1618c2a9f1d248ef4235bb79c1450",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2020-04-02T14:09:06Z",
    "title_canon_sha256": "4248da4828060929eea23ba0662849d8cd1d5296dd0a65da321c625e1a47f4cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.01014",
    "kind": "arxiv",
    "version": 2
  }
}