Lynda Sayce
type: MusicGroup
genre: medieval
description: Lynda Sayce is a British lutenist and theorbo player, known also as a scholar of musical history and a writer on the history of the lute and theorbo. Brought up in Sandwell where she trained in the y
popularity: 15
followers: 251
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd29f215ab117ef79afcdd76b9fbca88a033452af19b6863890de9b0ef0601a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953721
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953721
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a8ea98f-27f1-4fe0-9142-286bdc7c332c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a8ea98f-27f1-4fe0-9142-286bdc7c332c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8a8ea98f-27f1-4fe0-9142-286bdc7c332c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:12:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbd29f215ab117ef79afcdd76b9fbca88a033452af19b6863890de9b0ef0601a3","name":"Lynda Sayce","registered_at":"2026-06-14T19:04:51Z","symbol":"NIM0547570","token_address":"0x78bdd6db1398becb05c8ebcdc9400f7cb03fa98e","type":"artist","uuid":"8a8ea98f-27f1-4fe0-9142-286bdc7c332c"}
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 0xbd29f215ab117ef79afcdd76b9fbca88a033452af19b6863890de9b0ef0601a3. Chain 2 (Bitcoin): anchored in block 953721 (2026-06-15T01:12:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a8ea98f-27f1-4fe0-9142-286bdc7c332c.json and https://artists.proofprofile.net/proofs/artist/8a8ea98f-27f1-4fe0-9142-286bdc7c332c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:12:01Z
  text: {"copyright_id":"0xbd29f215ab117ef79afcdd76b9fbca88a033452af19b6863890de9b0ef0601a3","name":"Lynda Sayce","registered_at":"2026-06-14T19:04:51Z","symbol":"NIM0547570","token_address":"0x78bdd6db1398becb05c8ebcdc9400f7cb03fa98e","type":"artist","uuid":"8a8ea98f-27f1-4fe0-9142-286bdc7c332c"}
album: Carnevale Veneziano - The Comic Faces of Giovanni Croce
  type: MusicAlbum
  date published: 2001-02-01