Pith Number

pith:FPXRFWRK

pith:2020:FPXRFWRKVAPX6DAPLRU7E6XIZ3

not attested not anchored not stored refs pending

The permanent tide and the International Height Reference Frame IHRF

Jaakko M\"akinen

arxiv:2006.08440 v3 · 2020-06-15 · 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{FPXRFWRKVAPX6DAPLRU7E6XIZ3}

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	2026-07-05T03:15:50.712854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bef12da2aa81f7f0c0f5c69f27ae8cef9a5b31c0f78b2edd3797bbbf21da3f9

Aliases

arxiv: 2006.08440 · arxiv_version: 2006.08440v3 · doi: 10.48550/arxiv.2006.08440 · pith_short_12: FPXRFWRKVAPX · pith_short_16: FPXRFWRKVAPX6DAP · pith_short_8: FPXRFWRK

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/FPXRFWRKVAPX6DAPLRU7E6XIZ3 \
  | 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: 2bef12da2aa81f7f0c0f5c69f27ae8cef9a5b31c0f78b2edd3797bbbf21da3f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3524210fad7e5f34ca3d3baa7eb978f48907d2a9ddce881e063886681558713",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2020-06-15T14:38:29Z",
    "title_canon_sha256": "7870395db6184e24b219cf6c903da85331412c7513ba7bbf7e743fe4fee22acf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.08440",
    "kind": "arxiv",
    "version": 3
  }
}