Yazz (born Yasmin Evans; 19 May 1960) is a British pop singer, who remains perhaps best known for her 1988 UK number one single "The Only Way Is Up". Some of her records are credited to Yazz and the P
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 0xf0eb8d9a9824f652cbfae138d349a2e3607bd814dc8c69ab2f01280fc5f592ad. 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/f9e79d46-593d-4169-bb79-98c0cd6289e0.json and https://artists.proofprofile.net/proofs/artist/f9e79d46-593d-4169-bb79-98c0cd6289e0.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 0xa8d66981fc591c3cbcddbbadabf0675427217de73fd576ed8a2a0df5fe603eb9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBUM71603145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d26eb8d3eb148d893f906472a0f4d653b5ee16524ccb08996579dfe8f2f2d1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GBUM71603146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8836f249d8212f45a948098e1ec6e750dc2a842b888c44b015b5499b72da30c5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBAKW9400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1486d529284624b684e317624fa8d1593571eea742e41af425475d67493e2fe. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBAKW9400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08ec23c1053eaa13b54ab5a445b562ef9435eb3c251b778741be7a7dfb787e8. 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/GBUM71019239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825daf0f84965fce228a954ec8957d6b070e154547296d7a6aeaaebe4a7daae4. 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/GBAKW0201571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825daf0f84965fce228a954ec8957d6b070e154547296d7a6aeaaebe4a7daae4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAKW0201571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dac6032827a945e0976cb3e0ab978e3d0040386ebdeae749b0a6756e750728c. 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/GBAKW8801029.
Born to Lose (feat. Sean Cross, Swizz Beatz, Jussie Smollett & Yazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8c0faa417d3d2351e175eeb9d38574ad36d737d0ba4d3dd73b7a476a9b7297. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91502425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d345d0c4bb5c6b8ce84d5c87aa05d64ead11141c99ba2d44738eaad641ec9c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91502742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e72e0ce40903c2b78655ccdc0645cc8f2a899815de607db6b01df6fcced609. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91502750.
Ain't About the Money (feat. Jussie Smollett & Yazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96f403b6033b14c42671c028289a1d58f06734b61b3bd9abc37e79827d602c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX91502214.
Runnin' (feat. Yazz, Jamila Velazquez, Raquel Castro & Yani Marin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a051e45fa98c8356289ed6d5dfc6e51d3d024b6eb342def6d826c1567bc465. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91503009.