International Business Machines Corporation

Apple Inc.

Globalfoundries Inc.

Dulce Beatriz Ponceleon

Jeronimo Irazabal

Diego A Masini

Nitin Gaur

Andres Garagiola

Petr Novotny

John B Geagan, Iii

John Bernard Geagan, Iii

Ke-Chiang C Chu

Hsi-Jung Wu

Raul Laprida

Savitha Srinivasan

Sigfredo Ismael Nin

Guillermo R Lopez

James O Normile

Arnon Amir

David W Kravitz

Yacov Manevich

Luis Angel D Bathen

Dragutin Petkovic

Luis Angel Bathen

Roberto Manduchi

Tanveer Fathima Syeda-Mahmood

David James Beymer

Andreas Dieberger

Gabor Madl

Vladimir Zbarsky

Brian Keith Smith

Katherine Shu-Wei Wang

Julian A Cerruti

Omar U F Choque

Dai Shi

Shikhar Kwatra

Ramani Ranjan Routray

Hongxia Jin

Kevin Tiene

James Lee Hafner

Pawan Raghunath Chowdhary

Darryl Maurice Adderly

Marc Henri Coq

Yunyao Li

Shun Jiang

Shivakumar Vaithyanathan

Kevin Lavern Schultz

Nathalie Baracaldo Angel

Daniel Eric Rose

James Harvey Kaufman

Chung-hao Tan

Guangjie Ren

Rajasekar Krishnamurthy

Abhishek Malvankar

Rosanna Mannan

Colette Manoni

Matthias Seul

Robert Glenn Deen

Deepak R Kenchammana-Hosekote

Carlton Wayne Niblack

Richard Francis Freitas

Jeremy J Bornstein

Norman Jerome Pass

Omer Ahmed Zaki

Trent Balta

Daniel Martin Russell

Ioannis Katsis

Eugene E Nitka

Malcolm Slaney

Marc Thadeus Roskow

Peter Guglielmino

Collin Walling

Christine T Wolf

Priscilla Fernanda Jimenez Pazmino

Corey McQuay

Garth R Goodson

Tanveer Fathima Syeda-Mahood

A display case is provided. The display case includes a transparent display for viewing an object through the transparent display and a watermarking engine configured to display a watermark on the transparent display.

Display case with transparent display for watermarking

A node in a blockchain network may agree, on an authority accept a compliance module from the authority, accept the compliance module. The node may also receive an operation, verify a compliance of the operation based on the compliance module, add the verified operation to a ledger on the blockchain network.

Compliance mechanisms in blockchain networks

An example operation may include one or more of encrypting a private key with an encryption key, generating a plurality of keys based on the encryption key and converting the plurality of keys into a plurality of key shares based on a secret input value, storing the encrypted private key on a blockchain, and distributing the plurality of key shares to a plurality of blockchain peers of the blockchain, where the distributing comprises transmitting a different key share from among the plurality of key shares to each blockchain peer among the plurality of blockchain peers.

Key reclamation in blockchain network via OPRF

A node in a blockchain network may generate a key for a first ring, wherein the key unlocks a first collection of data, defining a second ring including a second node of a second organization, derive a second key for a second collection of data, wherein the first key and the second key access the second collection of data, and distributing the second key to the second node.

Blockchain data segregation

A processor may segment a media key block into two or more subsets. Each of the two or more subsets may be respectively associated with a particular group of receivers, and each receiver of the particular group of receivers may be in a blockchain network. The processor may receive, from a first receiver, a request for permission to process the media key block. The processor may identify which of the two or more subsets that the first receiver is associated. The processor may provide a media key block value to the first receiver.

Decentralized, dynamic media key block for broadcast encryption

An example operation may include one or more of receiving a request to certify a digital record, retrieving a first hashed data value of the digital record from a data block included among a first hash-linked chain of blocks on a first blockchain, retrieving a second hashed data value of the digital record from a second data block included among a second hash-linked chain of blocks on a second blockchain which is different from the first blockchain, determining whether the digital record is valid based on a cross-validation of the first hashed data value and the second hashed data value, and storing the determination of the validity of the digital record in a data block among a third hash-linked chain of blocks.

Cross-chain validation

A processor may incorporate one or more keys in a media. The one or more keys may each be associated with a specific instance and the one or more keys may be included in a blockchain. The processor may identify that a first specific instance has been encountered. The processor may provide a first key associated with the first specific instance. The processor may determine to allow access to content of the media.

Decentralized broadcast encryption and key generation facility

An example operation may include one or more of connecting, by a pharmacy node, to a blockchain network configured to store patients' data on a blockchain ledger, receiving, by the pharmacy node, a request from a patient node for a prescription refill, the request contains a secret key of a patient, extracting, by the pharmacy node, the secret key from the request to verify a patient's identity, and executing, by the pharmacy node, a smart contract to: (a) decrypt a prescription data located on the ledger by an application of the secret key, (b) retrieve patient's allergy records from the ledger to check the allergy records against the prescription data, (c) determine a number of remaining refills from the prescription data, (d) check validity of the prescription data based on an expiration date, and commit a prescription refill transaction to the blockchain based on a successful execution of (b)-(d).

Decentralized prescription refills

An example operation may include one or more of storing, within a blockchain, a request comprising an identifier of content and a value of a user who created the content, detecting consumption of a reusable instance of the content by a second user, designating fractional values of the content to the first and second users based on the detected consumption of the reusable instance, and storing, within the blockchain, a second request comprising an identifier of the reusable instance of the content, identifiers of the first and second users, and the designated fractional values of the content to the first and second users.

Downstream tracking of content consumption

An example operation includes one or more of establishing, by a first blockchain trust anchor node, a trusted connection to a trust anchor node of a second blockchain, detecting, by the first blockchain trust anchor node, changes of the first blockchain, and executing a smart contract to reflect the detected changes on the second blockchain.

Trust-varied relationship between blockchain networks

A method, computer system, and a computer program product for blockchain enabled crowdsourcing is provided. The present invention may include receiving an asset from a content provider. The present invention may also include deploying a smart contract based on the received asset, wherein the deployed smart contract includes a plurality of compensation rules. The present invention then may include partitioning the received asset into a plurality of fragments based on the deployed smart contract. The present invention may further include releasing the partitioned plurality of fragments into a blockchain network. The present invention may also include tracking each fragment within the released plurality of fragments using the smart contract.

Blockchain enabled crowdsourcing

An encryption scheme is provided in which subset-difference lists are generated by blacklisting subsets corresponding to compromised devices and splitting subset difference lists corresponding to the blacklisted subsets into multiple subset difference lists. In some embodiments, a subset-difference tree is generated. The subset-difference tree includes a plurality of subsets. The subset-difference tree covers a plurality of nodes. Each of the plurality of subsets has an apex node among the plurality of nodes. At least one blacklisted node of the plurality of nodes is determined. A first subset among the plurality of subsets is identified that covers the at least one blacklisted node. A plurality of substitute subsets is determined. Each of the plurality of substitute subsets overlaps the first subset and does not cover the at least one blacklisted node. The plurality of substitute subsets are substituted for the first subset.

Subset-difference broadcast encryption with blacklisting

An example operation may include one or more of acquiring, by a provision server, system policy data from a system policy engine, receiving, by the provision server, jurisdiction policy parameters from a jurisdiction policy engine, selecting, by the provision server, a smart contract from a smart contract repository based on the system policy data and the jurisdiction policy parameters, mapping, by the provision server, the smart contract to a node, and provisioning the node to a blockchain network.

Geo-location compliance

An example operation may include one or more of storing a broadcast encryption tree comprising a set of cryptographic keys disposed in a hierarchical tree format, distributing a partial set of keys from the broadcast encryption tree to each respective peer from among a group of peers included in a blockchain network, receiving, from a user device, an identification of at least one peer included in the group of peers for processing a blockchain transaction, selecting a subset of keys from among the set of cryptographic keys in the broadcast encryption tree which enables at least one peer to decrypt transactions and doesn't enable the remaining peers included in the group of peers to decrypt transactions, and transmitting broadcast encryption information about the selected subset of keys to the user device for performing encryption of the transactions.

Blockchain transaction privacy enhancement through broadcast encryption

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Palo Alto, CA, United States of America

Dulce Beatriz Ponceleon