Pith Number

pith:IXHTR4LN

pith:2022:IXHTR4LNT2AWWVH3YS4BSDYXRF

not attested not anchored not stored refs pending

Target-enclosing inversion using an interferometric objective function

Alison Malcolm, Ivan Vasconcelos, Matteo Ravasi, Polina Zheglova

arxiv:2201.07022 v1 · 2022-01-18 · physics.geo-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IXHTR4LNT2AWWVH3YS4BSDYXRF}

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	2026-07-05T04:48:41.204045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45cf38f16d9e816b54fbc4b8190f178964ddaf4f3eecb186daf19ad44131b44c

Aliases

arxiv: 2201.07022 · arxiv_version: 2201.07022v1 · doi: 10.48550/arxiv.2201.07022 · pith_short_12: IXHTR4LNT2AW · pith_short_16: IXHTR4LNT2AWWVH3 · pith_short_8: IXHTR4LN

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/IXHTR4LNT2AWWVH3YS4BSDYXRF \
  | 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: 45cf38f16d9e816b54fbc4b8190f178964ddaf4f3eecb186daf19ad44131b44c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "120901cfad5a6e820ef9ec7b0601dc3ceea5eedf45d26d43e5abf1c50e22eb2f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2022-01-18T14:39:01Z",
    "title_canon_sha256": "f5f84f608bb12d174e861dc4d98ed6c4731327fafe638b87873faccc2c0b90f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.07022",
    "kind": "arxiv",
    "version": 1
  }
}