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 0x3a7142ce9bbc7bc4cc3b9688bf3b1e5d806823b8bb4453aa1e717c8f8631fe46. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb783cc3-1a20-43c5-a4c3-4c53b37fe79b.json and https://artists.proofprofile.net/proofs/artist/eb783cc3-1a20-43c5-a4c3-4c53b37fe79b.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 0x77db2f2ecf3f7597e80c50a1de2d77ea91fa84e84e06c3bb90aa191441681290. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/ZA82Y1900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8453c7d5d367d864b3b4bc3cc2ceb9bd0b68f23581c0ef3683149422ba6bb06a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA82Y1900083.
This Is Love (feat. Master KG and Andiswa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dca06b83527f747b98a13669aa0fb13162531b3558bfd048bea1cefcc6f71f6. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/ZA82Y2000227.
Ngikhathazekile (feat. Lwah Ndlunkulu, Khethi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308a95b2527c9c273c37d39e7ed9a7ecf338d854f1d276de3727f9584ca4e9c7. 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/ZA82Y2300009.
I'm In Love (feat. Murumba Pitch, Charlotte Lyf & Master KG)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dd76775581b3b8d29e499a5773e549762ed3bd83b32429b7e4514ee373c8b5. 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/USUYG1572664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dd76775581b3b8d29e499a5773e549762ed3bd83b32429b7e4514ee373c8b5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USUYG1572664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f31135b581a81d7de8b847e7245a2bdaf8f34498d6ac3a48deb9c7da09fdb33. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:53Z), 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/USUYG1572663.
Motivational Speakers (feat. Thabie Ngethe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92245e5672c61d23ab43d019b66586b9e0f4cfc84d3ae2e97133eb657333e9a. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/USUYG1572665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d95f2fffe8ef25372825806cf5a9bcf8839bc7d4dfbc1b021166e22956de0c0. 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/QM7282109662.
Ngifuna Wena (feat. Bongo Beats and Soul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd4cebc0f2b0e97be729f290f34ebae97571e09b1fa489b5eedca51d41e716e. 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/ZA82Y1800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8518e1014c6ec29361b74c062f0f0e6ea2f7ee3671e28a27b42ebbb8f4c001e1. 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/ZA82Y2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c95345c9af2f56c5cc38683fcb3073df0a7d81b28a75dccd20adf010a15460b. 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/ZA56E2002743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc15fabfd1c7e772d12326c995ea5feb1dfccf72e2e83260fbb31f993e1e6cb. 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/ZA82Y2000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc005cdad02461513d9d4add6917b6edad1e1118ba586b4a10a37bc104adef0ab. 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/ZA56E2304118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419c93dbc261c73829a63c15875ca6b35e7868e872fee03ef229a76df3ab26af. 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/ZA56E2304127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2322069f0ec56a9a6457c50212ffdfa182c82b42133e6d191664968befe4800. 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/ZA56E1800913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bd6a8acd46dfa3438e36aa6199adf407bd32169da28afd1786d160ddac9fc4. 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/ZA56E1800914.