Elizabeth Marjorie Florence Sempa (born 1995), also known as Lizbet Sempa or Mysie, is an English singer-songwriter. She won the Rising Star Award at the 2020 Ivor Novello Awards. Early life Elizabet
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3c4b9bbd738b925782ba459accb5624e32fe568e6361f924f7a53be3e7ad7f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8e7b372-03b9-4b38-9a73-30919d471ef8.json and https://artists.proofprofile.net/proofs/artist/c8e7b372-03b9-4b38-9a73-30919d471ef8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141fda6f849641530e591d494c6c3868812faa3204afd87615e21cdd8a6cc3b8. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:35:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKG8V1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313f77720db59a3fb202ee3e9b2966ce30f0bd39f6cfce95f1e64398cdad314d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US23A1534556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bf13b27430c2f84b619915ba16c6356e334af6c69fe9a4e8018ee433ee93ee. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US23A1533156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bbefbe26fc821e0b4dae305d09cf6278ea65829b2aa7920437e9ea08293fc0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US23A1544575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647c9b7213115a03f724349285f1aada9abea0ee8518781e087750c4dbd89e32. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US23A1544577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaf5116f08f51da89a45fb74a1ecd61caf3be48aca7a5991fe573702c6e842a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US23A1544578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57003da351e69ea82e19e91a7a4863426acdf718b5e0efe31d73e29f01fb94b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92302476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52791c79ee982ee748b1655d52c8c3304cd7a2093f740780a1662d4d22d9976. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2435994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdda08e14717b67606f725e1dd8dab4abde98a6521e3b7573c5123d742a64d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2402705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ce71c68bf3b0927e8a426f580a1c1edc0278961f2e483c67c0a658c203c3f8. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GXH2J2587723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe770048e0625d03b41a9e08bd6a4a92cae23cce0cbf24133c8dc03272688e1c6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB002300339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe770048e0625d03b41a9e08bd6a4a92cae23cce0cbf24133c8dc03272688e1c6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITB002300339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9232453228906424dc274fcf4f8f3189cd10047308dd7ed7d82a032ef670a19. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB6LY1601344.
Journey (feat. Mysie) - Kareem Ali Remix