Record every handling event of a doping sample on an immutable custody network, from collection to lab result. The Evidence Chain and Device Attestation time-stamp each stage while the DID and VC Ledger captures officer, athlete, and lab signatures, so a finding rests on a signed record rather than a paper form.
Turn a contestable paper trail into a continuous, tamper-evident record of who touched the sample and when.
01.
Replace the paper custody form. Every collection, transport, and analysis event is written to the Evidence Chain as an ordered, tamper-evident record, so no stage can be back-dated or quietly rewritten after a positive result.
02.
Bind each reading to trusted hardware. Sealed containers, temperature loggers, and lab instruments attest their identity on-chain, so a claim of a broken seal or a mishandled sample is checked against signed device state rather than memory.
03.
Capture officer, athlete, and lab signatures at every transfer. The DID and VC Ledger requires both the releasing and receiving party to co-sign the sample identity before custody advances, making a silent labelling swap detectable.
04.
Anchor the seal serial at collection. Any later mismatch between the sealed identity and the sample presented at the lab breaks the cryptographic link and is flagged before analysis, not after a challenge.
05.
Answer a legal challenge from evidence. When an athlete disputes a finding, the agency exports the complete signed custody record in one query, collapsing a resolution that once ran to arbitration into days.
06.
Give the agency and arbitration panel a read-only window. Authorities query the custody chain directly to confirm integrity, replacing physical file retrieval and witness recollection with a live on-chain lookup.
Follow a single sample from the collection booth through sealed transport, lab analysis, and a final challenge that resolves on-chain.
14:05:11
[SYS] Opening doping control custody manifest...
14:05:12
[CMD] collectSample { seal: "DCF_77120", athlete: "ATH_5541", officer: "DCO_204" }
14:05:12
[AUTH] Co-signing athlete and officer credentials via DID/VC...
14:05:13
[OK] Sample DCF_77120 anchored at block 5510442.
Cerulea decomposes sample custody into modular contracts. Each layer seals, transports, analyzes, and exposes a sample so integrity holds without any single party controlling the record.
Sample chain of custody is a horizontal integrity capability. Here is how different sporting bodies put the signed custody ledger to work.
Anchor every collection and transfer on a shared ledger so a positive finding arrives with a complete signed provenance, cutting arbitration exposure and turning custody defences into a settled record instead of a witness account.
Key Asset Types
Verify the anchored seal before analysis and bind each result to the exact sample identity, so a lab cannot be accused of testing the wrong specimen and can prove its own handling in one export.
Key Asset Types
Read the custody chain directly during a hearing to confirm integrity without physical file retrieval, resolving custody challenges on cryptographic evidence rather than competing recollections.
Key Asset Types
Whether you are bridging a legacy laboratory information system or capturing collection data from a field officer's tablet, Cerulea routes both into one signed custody record.
For accredited labs on legacy LIMS. Existing analysis events are translated into signed on-chain custody transitions through the API gateway, with each seal verification hashed automatically.
Legacy LIMS
Laboratory Systems
Cerulea API Gateway
Event Hashing & Signing
Cerulea Private Chain
Custody Evidence Ledger
For doping control officers on mobile. A progressive web app signs each collection and handoff from an officer wallet and routes device attestations directly to the ledger.
Officer PWA / Wallet
Collection Devices
Consortium Validators
Custody Consensus
Cerulea Ledger
Shared Custody Record
Building a signed custody network with device attestation, credentialed handoffs, and an arbitration-grade verifier from scratch requires specialised engineers and long laboratory integration cycles. Calculate your exact deployment speed using Cerulea.
Traditional Deployment
Solidity Coding & Audits
~ 12 Months
Visual Compilation
WASM Logical Artifacts
~ 4 Weeks
The legacy timeline reflects regulated laboratory integration benchmarks. Wiring each lab's LIMS to a custody model, building credential and device-attestation logic, and shipping an arbitration-grade verifier for an average agency takes a baseline of 8 months. Building the same architecture on Cerulea takes a baseline of 2 weeks, because Cerulea Studio visually translates your custody and attestation rules into pre-audited WebAssembly binaries and provisions the shared evidence ledger and verifier instantly.