Yolanda Nyembezi (23 August 1994 – 13 March 2025), professionally known as Yallunder, was a South African singer and songwriter. Born and raised in Bizana, Nyembezi signed her first record deal wit
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4febcdb2c01fb40149344a08d207fc6db08ebeaeecf8cd7ea60d5d51e4820e. 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/d62cb4b1-2980-4966-a3f6-574e3af5e422.json and https://artists.proofprofile.net/proofs/artist/d62cb4b1-2980-4966-a3f6-574e3af5e422.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8510cd35fe1243ffb1922d47387d88d7405476c9cb13a3e9eb6058f514e6e94f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZB1812300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27e1e9e9dadff75b8ba892b4e9c3d4812af7e5f95f9d5a7ce654ed1364ace4b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ZB1812300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eebd7c36745cc2bef2307e8289db5ba6e4bd804be3118fa45631a4ef5e101c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ZB1812300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f6c487306800bbefedfda7f4e41fb263eb7fb3957542fca86eafd8a0b2cfc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZBC8A2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62ff5bbc60a68b2459ded2b20eaae989855399e7cbe818924a2f7013bfc0348. 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/ZA56E2315047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3120075d5fcc031be6decd2c76b320de89c9479eeb77692ac0f907ff8e92c957. 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/ZA89J2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3120075d5fcc031be6decd2c76b320de89c9479eeb77692ac0f907ff8e92c957. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA89J2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3649ffb6e24798a01dfaa124a207c907dab8c522082480aaa2fa14791180c59f. 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/ZA56E2002353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f713468960455207d7adea666a98022aa62169c284b3a854db7e328f330e23. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAMID2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f713468960455207d7adea666a98022aa62169c284b3a854db7e328f330e23. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAMID2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ce2f00a209b04e38f8f469bcc2cb41ce8781b64e966af1f86d65d133bb37cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA1NG2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2286193901e2f1c67793fa2d41f057b2d3870aae81644221a8781364805b0a. 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/ZA1NG2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5623937f6a4fb19e23d39fb766e33d15dbc3de19eaa14ce33d6ca6a8e3d06e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAC012401376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0831a5568b73ea0d6f12f6c684ed9e2a61d043c9f21c2072c649a9777edee9fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZB88P2200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515ccc3ab036d5b4b3bcf68d78e1c709c86804849c3a292fd220133594efcf3d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAQ652400268.
Bayeke (feat. Deeper Phil, Yallunder & Shino Kikai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7dba69a0267123353399f38f1ee57ae75af1481e99daef7259a5fbe4b1165f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2200232.
Endleni'Yam (feat. Mhaw Keys & Yallunder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788e2e426c8f54613441bd1c7466e360ff1d8b1d7b85df97e27e13fb135d2ff5. 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/ZB88P2200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c8ec748b3422941d5062a5cb91f756390b6915610e74edcd096c358316f7d6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA2EH2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d1de9b4013b3aeda300de72709187f617c30c56d71c761512a08a00eba7d4e. 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/ZA56E2420290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737ccc5a3d29350d2b48a35885a6c0ae1f1da99f2694a9829389a278da912cbd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2205022.
Uku Khanya (feat. Yallunder, Umthakathi Kush)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd197a4dacebc798799400f96c459b3b25461ae8e9f5b41c0a918c417a2f924. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA56E2315272.
Ikhaya Iam (feat. Babalwa M, Yallunder, Makhanj)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd51e90f2d12f2e4a72beaa9468067863d718f0716eecd465a9c3cb4e8deb6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZA56E2315273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a2e5343b3701973749a7b56ff49ebeb921a91d6531077fbd434ac6a3c97606. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA56E2315282.