Jan Schreiber
type: MusicGroup
description: Jan Schreiber (born 1941) is an American poet, translator, and literary critic who has been part of the renascence of formal poetry that began in the late twentieth century. He is the author of five b
popularity: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb71c36c29bd5d5008cf5a8a45c364e53c70f6ad67dd254d7b63e3c9253298029
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/4bb3abaa-2c5c-48fd-868f-f9be68bcfe2a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4bb3abaa-2c5c-48fd-868f-f9be68bcfe2a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4bb3abaa-2c5c-48fd-868f-f9be68bcfe2a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb71c36c29bd5d5008cf5a8a45c364e53c70f6ad67dd254d7b63e3c9253298029","name":"Jan Schreiber","registered_at":"2026-06-16T16:01:25Z","symbol":"NIM1102883","token_address":"0xdd3261f5d5eef7ed318cf0edbb9621b0c96dea3c","type":"artist","uuid":"4bb3abaa-2c5c-48fd-868f-f9be68bcfe2a"}
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 0xb71c36c29bd5d5008cf5a8a45c364e53c70f6ad67dd254d7b63e3c9253298029. 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/4bb3abaa-2c5c-48fd-868f-f9be68bcfe2a.json and https://artists.proofprofile.net/proofs/artist/4bb3abaa-2c5c-48fd-868f-f9be68bcfe2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb71c36c29bd5d5008cf5a8a45c364e53c70f6ad67dd254d7b63e3c9253298029","name":"Jan Schreiber","registered_at":"2026-06-16T16:01:25Z","symbol":"NIM1102883","token_address":"0xdd3261f5d5eef7ed318cf0edbb9621b0c96dea3c","type":"artist","uuid":"4bb3abaa-2c5c-48fd-868f-f9be68bcfe2a"}