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 0xd452d90d15719c7b1cf7ca5504cc49bb7de75de6c8eba5e079def30c6cb6da53. 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/727b56a1-e6ab-4859-aadd-4472ecc02ed0.json and https://artists.proofprofile.net/proofs/artist/727b56a1-e6ab-4859-aadd-4472ecc02ed0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tsela (feat. Dalom Kids, Zintle Kwaaiman, Seemah & Cici)
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 0x026e0f51098cb22e032338d3e085d19e5315634046f4c93dd12bcaf50575a972. 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/USUYG1567724.
SIXAKEKILE (feat. Nombulelo Mhlongo & Zintle Kwaaiman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe6c2a7a094f319e581234f7eba0c7e57e19959e07caea4da587689b732f2b0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:40:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1584706.
Ibhanoyi (feat. Seemah & Exclusive Drumz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bf525b8d78e96590c4f383aa90dccfff0ac28e7b7e74cdbd21130c37883b39. 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/USUYG1549012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7731d980aadff31531f4099c2de6402eca23d87ef5cb2e1e860e088a087d88. 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/USUYG1512818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c3cacc94ca2cc90eb841832b390c4c5d5ebb13a9400b0bbd53c80913455d58. 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/USUYG1572567.
Sabawela (feat. Exclusive Drumz, Lioness Ratang & Khobzin Kiavalla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0d51a4526e7dc6cb2d01829827baf1b563a0578327e73258dafc148c205493. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1572642.
Akuna Tata (feat. Torque Musiq & Exclusive Drumz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8e228feb2098b334a3540d078fa4bf1e1a4d18e5b3d57f1418edac0bc514b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USUYG1572552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bb26c28fc46caa45782cf8aa88ef3a757fd8f3915735cc176701df6ee1f35a. 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/ZA93V2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf0b8def1e26ec49a73a61daf1cf1e9a396cf3a20f0c7f6d5cce7a922fb352b. 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/ZA93V2300060.
Umvelinqangi (feat. Ntando Yamahlubi & Msongi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648063ca744ef9f04ff98fcfb6e3e69508c9d7f6f3c4cecd653fc73bb509e5ad. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USUYG1569038.
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 0x15741b479a136b365a65564d76cdcc971b7c624e9159723d4087e2c08b94ff80. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/ZA93V2300062.
Anghluphi Muntu (feat. Exclusive Drumz, Dalom Kids & Tee Jay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95887f77f0d9f1e3161d595b206b0d625e3a1ec3f8b47f7677f9c13b80df0103. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USUYG1572559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed965f2e60f867e946b13eddb4d18222ad1d894cd13bc028b448929a104a1dc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ZAC012400812.