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 0xe50cd5d7c4c4a37bf0d39109736409026601e8f388d0ae977a825a22952b1fa1. 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/2e6a0544-0507-4343-87a2-5835968099fb.json and https://artists.proofprofile.net/proofs/artist/2e6a0544-0507-4343-87a2-5835968099fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thatha Lento (feat. Stompiiey, Scotts Maphuma, CowBoii, Vulela & Console)
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 0xe514bf7b7b8f2d7dcd67651f8aeea865358571ad2e47e04b0f993c48e8303cec. 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/ZBN532400042.
Summer Body (feat. Sipho Something, Commander7014, Lassgroove, Phoenix, LeeMcKrazy, Stompiiey, CowBoii & Scotts Maphuma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43543da2af45c2d2e414755627f6db02f67039527edd80bc838871e8cbde662f. 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/ZBN532400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976dcc482afd1d342f6e42aeee15c22e680139b274e767eff0de668ef76f7f34. 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/ZBN532400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f16a4082953cdf4643f05573b321efd6d4d578cbd8014b782a8620741cec6e6. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ZBN532400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb063309bff54c1fee3c96a86a08b098cb56a04bafca67e5a14363d2ffe0e7867. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/ZBN532400046.
Why (feat. Cowboii, CarterIV, Mbuxx & Vyno Keys)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44af56964745e42e513039ccc05924f2d25cb8c5e3573dd33a1ecb3cfd4b9ec5. 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/ZB79M2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f1ea8601b0fe8183f535473f6419b59e3dfd5dae58f566fb0749532f1e2ac3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBLFP2435549.
Budda Messiah (feat. Xduppy, Mbuxx, Ftears, Thatohatsi & CowBoii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12d0686f05e5e949cf9981004214af6372c90f49a020846b92231cce22a3cef. 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/ZBN532400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da1ed32296aa1fd3ed2bfabfb00b9b736772604c0dd942133932ce5ca610ae8. 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/ZB1OS2500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869505b5e23beb1101ebca587127cd87b88ace42aab19de5997603cc0b1aa9d5. 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/ZB1OS2500502.
Busy Boys (feat. Khalil Harrison, 2woshort & Ceeka RSA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb594870330b4183d85eb28f57fe3c74fd46b37bff833b42b986350520f9c4aff. 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/ZB1OS2500504.