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 0x9288c80a8e805307c67ea4bf33bc40eb45ae9fcff7ca91ed3bc5f502687c9a9e. 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/d1cb2bde-c35e-42d1-bac1-72efae051c59.json and https://artists.proofprofile.net/proofs/artist/d1cb2bde-c35e-42d1-bac1-72efae051c59.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 0x846cb9140411f63cd9d65b2eb9dfda1a93bd3b2a8b27f196ce10bef020bcbf8f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ZAC012200757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d63d360f6b4ad2fb44caad484194192de3bf631b6f6b419c6120d22a80f1ca2. 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/ZBO732300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abdaa2aa755326502c40049145e0a9949e7e8a6787828834a8013c70fec249c. 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/ZBO732300101.
Umdali (feat. Murumba Pitch, Brandon Dhludhlu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a3296b45cb9f9eab0cb2174cb2b41039de01cb41ada2297b950b09df7ca6ea. 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/ZA56E2315057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae1d0a078fbeb8c35fda7898f5786122622c8b001439f15937ae8eaa10db892. 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/ZAUM72400237.
Abuti Wadi Chipi (feat. Murumba Pitch, Zuma & Mzukulu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75893cd402262cb100356258a5fe70952af9807560322c95973dc145478a5620. 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/ZAA012200249.
1 000 000 Amapiano Seconds (Kings Of The Surface)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb594928fcc915498696fa8da601323cf43958e9b1faccdd6c8b84c239285cd15. 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/ZAE3A2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b68e1e8a0cdfe1c9c805ca8daa57074dd0de41e3a8a403c15e9fac9c661523. 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/ZAJMF2100001.
Duze Kwami (feat. Raspy & Murumba Pitch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0162354f1c750ee6f6c57520bc8ea8e9f5db8c1a6460d8ea45777a18ea87548. 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/ZB1OS2200061.
Ngiyaz fela (feat. Dali & Murumba Pitch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65a7fe755bc337ad7944d561426a709537bcc3eeb832cb26cc8650d2eb60f2c. 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/ZB1OS2200068.
Visca Vimba (feat. DJ Maphorisa, Murumba Pitch & Daliwonga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6f76358750ae6703f0046d18af5d4aa695ee90c4e4b35af215826e6d6d3cac. 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/ZB1OS2200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353d472303718da0196ba7329eb9ebe1ecf3643da97eeebbab235d52aa443689. 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/ZAC012300721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e0d628b009f0021f26bbade3dd30e868613a0d9039ca7d83f42f47d54143d6. 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/ZAE3A2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74077c28ee117465bf2fde558961aa9f2055d7eb6e1ae812bdf24561fe1d75f2. 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/ZAJMF2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a1a7f4ce57045a0681c6439e4ac432f3fe824989c11c2d961c46b14332c8e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZAJMF2100005.
S'vuthela iNumber (feat. Murumba Pitch) - JnrSA Remake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a688519d16610e90afcf4f14ed15e09f83f67681a5814747ce0dff5793d5de9. 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/ZA34K2301657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf842876fa49ed51db9bfa4b758d998733c78164e82fac227a1d7a438bcb3d754. 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/GBQGW2000021.