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 0x12d8088b095d28e851b9881ed113d690b65539d31caaae9930352893b46d210d. 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/60c9bae1-0705-49f3-a37c-520204a086a8.json and https://artists.proofprofile.net/proofs/artist/60c9bae1-0705-49f3-a37c-520204a086a8.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 0xede0eba46902a5cd267d73e2a5d5e2e7ad0b5a8fdac99d0cab7905f91ff9c796. 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/ZA56E2002687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa18ced983d2ab34c1ecdf4a6bd5a2a14ba4bb8d2f60f91bc4aca345b76386e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ZA56E2002688.
Jwala (feat. Daliwonga, Acatears & Howard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff1809578981c91d9c2f635e4e72b7303d5b79c8d63c44dbdc1964bd6e04952. 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/ZAC012000354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81916bb291c33c5ada1312b4df6030669a708a75da7687a7b29c03ef5025675. 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/ZAC012000355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1512760f5399fb226e3d069006835884dccdd35d68be1353653df837768e93. 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/ZAC012000223.
Imali Yam (feat. Howard & Corry Da Groove) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55aa8a0c33e855e9604c4351a50e7416397ceb2bf70b7e62d54c48cbaead082. 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/ZAC012000008.
Idliwe (feat. Mlindo The Vocalist & Howard) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb768b46be27bcce84691409537a2988249f6e971e079c65025f4b4980afd7475. 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/ZAC012000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd280916f07be552784268ee8ea1eff7e9a657c959f372e1a346853455342f9af. 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/ZAC012000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567b8388fb42835b8e5d60f839e6382c5d89d77fb4de440157b61e7de6eb9346. 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/ZAA012000123.
Lengane (feat. Raspy, Howard, Aubrey Qwana, Focalistic, King illest & S.O.N.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f74a216a371975d16f2e4c88e08546b28c18abc8d48f87235c49303f74bdbd. 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/ZAA012200288.
Vuka (feat. Aubrey Qwana, Majorsteez, Howard & Paula Sibiya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867ad2221db385e79362afa1e8693a985170cd35131628e4e6f482fdbd3a3e44. 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/ZAA012200289.
Owami (feat. Baby S.O.N, Lwah Ndlunkulu & Lawd Weezy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366986211b5aa2a02dedd0fc0b3e38d7095385a94f2eefd0ce135b470f4abe41. 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/ZA0Q82400029.
Thina Sobabili (feat. Howard & Coolkiid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60abd63af3ff8f6cff6850af83a9ef651d47035afea7523d18be07dd8ef3b389. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/ZAK282100108.
Fela Ubumnandi (feat. Howard, Nia Pearl & LuuDadeejay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdfc6dbf7c4da711cab483f93c7f4d9ec56a7fcd3c2501c30890d3fdc15899a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAK282100109.