Arthur Friedheim
type: MusicGroup
genre: classical piano
description: thumb|Friedheim in 1912 Arthur Friedheim (, 14/26 October 1859 – 19 October 1932) was a Russian-born concert pianist and composer who was one of Franz Liszt's foremost pupils. One of Friedheim's stude
popularity: 3
followers: 177
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc2bd0877201aa3422509010f2c506bd5876d56a257fd1409f591cd14ed4e91a1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4bb44be5-59d7-413b-a073-ac081844a39a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4bb44be5-59d7-413b-a073-ac081844a39a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4bb44be5-59d7-413b-a073-ac081844a39a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc2bd0877201aa3422509010f2c506bd5876d56a257fd1409f591cd14ed4e91a1","name":"Arthur Friedheim","registered_at":"2026-06-16T16:01:31Z","symbol":"NIM1102903","token_address":"0x1dba594482f6057fe447582c89e3011b4098a5a0","type":"artist","uuid":"4bb44be5-59d7-413b-a073-ac081844a39a"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd0877201aa3422509010f2c506bd5876d56a257fd1409f591cd14ed4e91a1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bb44be5-59d7-413b-a073-ac081844a39a.json and https://artists.proofprofile.net/proofs/artist/4bb44be5-59d7-413b-a073-ac081844a39a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc2bd0877201aa3422509010f2c506bd5876d56a257fd1409f591cd14ed4e91a1","name":"Arthur Friedheim","registered_at":"2026-06-16T16:01:31Z","symbol":"NIM1102903","token_address":"0x1dba594482f6057fe447582c89e3011b4098a5a0","type":"artist","uuid":"4bb44be5-59d7-413b-a073-ac081844a39a"}
album: Bluette. Heritage Grieg, Liszt & Mozart
  type: MusicAlbum
  date published: 2024-03-26