Pumeza Matshikiza (born 27 February 1979) is a South African operatic soprano. A graduate of the Royal College of Music and a member of the Royal Opera's Jette Parker Young Artists Programme from 2007
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 0xc682695e624759e33eff9d6d08b9425497771bf1e3f8aee64cda8235a603e97e. 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/8a89ce4a-bebd-4a00-a88c-3ccf324f5ba8.json and https://artists.proofprofile.net/proofs/artist/8a89ce4a-bebd-4a00-a88c-3ccf324f5ba8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
La Bohème / Act 1: "Sì. Mi chiamano Mimì"
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 0xc59ccfe3a83175aabe8524ce54cd6c3425cd82dc0a54279c6dc4dd785452a04b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504480 — a six-check JSON result.
La Wally / Act 1: "Ebben? Ne andrò lontana"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d7b0fcc0f1c3248d0b54b967b9630361cd1df56618b55e6e7035d0ddff5a4e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504490 — a six-check JSON result.
Suor Angelica: "Senza mamma, o bimbo, tu sei morto"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4eae85b0b74643438af2079921fe374a8cfb311d63378a5ec4fb7a252c5e40b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504500 — a six-check JSON result.
Rusalka, Op. 114, B. 203 / Act 1: Song to the Moon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b43b6f23c97705d76d5d5147a7c6cef05d3fc310e08b9c26517e2ef9f4145b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504510 — a six-check JSON result.
Turandot / Act 3: "Tu che di gel sei cinta"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55ea1ec56291f412759f2da33ec6700894cba1144e6bddd5df30a8d35aed23a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504520 — a six-check JSON result.
L'heure espagnole, Comédie en un acte, M.52: "Oh! la pitoyable aventure!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105c7a39601b378067790eef5730c3f30d78ec2fa10ba244e33ae72675d15557. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504530 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb059f9b59ace4df6c1bee46a7178dd5ceccfc0f8ae9b25ed1f48f7c5f848678d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504540 — a six-check JSON result.
Cinco canciones negras: Punto de habanera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce24a7406454d9c643035b52700a41d1cf5f1d61d1fce01fc4b71e01a697d6f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504550 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf461dcaa99c92df9202cd43886fc1deb74f885e77b2251ca5bcf8fd864e8e5d4. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504570 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b0fedd476b457e456955d6b59fe36e5206918c76435fe14d500ce6b16f1941. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504560 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3c779e5f3c9f62596334b7688176002330c46ef1c29206f8cdb17d86a3f8aa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504580 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41bad7abd7904fcaa2b11ce40774451873fe2e292c99eab06ecfad08b159c07. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504590 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 3: "Giunse alfin il momento"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe159026fd4a54abc9bf879ce3ae2c5f775961cf133fabc5fe3fd05d2f4f3cade. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504600 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 3: "Deh vieni non tardar"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36824ffed666d5de562e83358256636cd04fb6c68007f7b4bd3c717070f03ef. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504610 — a six-check JSON result.
Orfeo ed Euridice (Orphée et Eurydice), Wq. 30: "Che fiero momento"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ac2b11f2355f2be5ac7a8140b1d90dded79d9a9cce222acf9002d86a1798fa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504620 — a six-check JSON result.
Dido and Aeneas, Z.626 / Act 3: When I Am Laid In Earth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42754b2b2595900de01390c5937582e96b5b0de97486a51aed4d086ba754c4d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF071504630 — a six-check JSON result.
A Child of our Time, Part I: How can I cherish my man in such days...? (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689b2a8c0458d92b892fb6b4e50d2fa807ded7466fe6f4c014ad1d51e1649d63. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2402608 — a six-check JSON result.
A Child of our Time, Part I: A Spiritual. Steal away (Soprano, Tenor, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa247c64967531466ad78fc25364f14151f0207c002c40f78a75079c741795e4d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2402609 — a six-check JSON result.
A Child of our Time, Part II: The Mother, The Uncle and Aunt, And the Boy. O my son! (Soloists)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3964d417d0e6e72b5f0b092107de4d033ce82ee5237044fa48e20bed91594f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2402616 — a six-check JSON result.
A Child of our Time, Part II: A Spiritual. Nobody knows the trouble I see, Lord (Soprano, Tenor, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb755d93a84f18c1d331b005fd500b2636d4a9fb910ff5dbc60353ee3327ef6f7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2402617 — a six-check JSON result.
A Child of our Time, Part II: The Mother. What have I done to you, my son? (Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ebebdb7b21579a70b68e8ebdf7008a428901930497f0ee89fe29764536f938. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2402624 — a six-check JSON result.
A Child of our Time, Part II: A Spiritual. O! by and by (Soprano, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058afd45cf8af09cd8fd4a6199b9b090588471867c69107596bb2fd88c2af65e. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2402626 — a six-check JSON result.
A Child of our Time, Part III: I would know my shadow and my light (Soloists, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8606c7bd5f64aa51977f3940574cf6da525fcd2209fd59f517491cf5ae2a718c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2402631 — a six-check JSON result.
A Child of our Time, Part III: A Spiritual. Deep river (Soloists, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f425759e0a04a445908522d133232d1770d252ac3e7d0900c6a39e9e12843a1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2402632 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c088595903aee33d93b16d932a712f9f535a5171b5ff397d8817feea88f4d3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBC2200365 — a six-check JSON result.