Maryem Tollar
type: MusicGroup
description: Maryem Tollar (born 1968 in Cairo, Egypt) is a Toronto-based singer who primarily sings Arabic songs.Jazz Times – Volume 38 Page 184 2008 "Egyptian-Canadian singer Maryem Tollar's Enya-like chants h
popularity: 8
followers: 339
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91102f7ab01d083bc248a24aa5e224721e4bbafc27b8f5d23e5ce6d5d44f32e5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b28ab808-eb0e-40b5-8eee-cc088bfd1e8d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b28ab808-eb0e-40b5-8eee-cc088bfd1e8d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b28ab808-eb0e-40b5-8eee-cc088bfd1e8d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x91102f7ab01d083bc248a24aa5e224721e4bbafc27b8f5d23e5ce6d5d44f32e5","name":"Maryem Tollar","registered_at":"2026-06-20T13:05:40Z","symbol":"NIM1618739","token_address":"0x99939daba17cff9ad68c38d0b701054fc91893a5","type":"artist","uuid":"b28ab808-eb0e-40b5-8eee-cc088bfd1e8d"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91102f7ab01d083bc248a24aa5e224721e4bbafc27b8f5d23e5ce6d5d44f32e5. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b28ab808-eb0e-40b5-8eee-cc088bfd1e8d.json and https://artists.proofprofile.net/proofs/artist/b28ab808-eb0e-40b5-8eee-cc088bfd1e8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x91102f7ab01d083bc248a24aa5e224721e4bbafc27b8f5d23e5ce6d5d44f32e5","name":"Maryem Tollar","registered_at":"2026-06-20T13:05:40Z","symbol":"NIM1618739","token_address":"0x99939daba17cff9ad68c38d0b701054fc91893a5","type":"artist","uuid":"b28ab808-eb0e-40b5-8eee-cc088bfd1e8d"}
album: Book Of Life
  type: MusicAlbum
  date published: 2004