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 0xf4bebdb9f7913a7e7fbe0c1f71e43a39d7ea07681d49cbc03450500771d682a1. 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/b7b88115-f2ab-4d95-992a-ca5e500f9bc0.json and https://artists.proofprofile.net/proofs/artist/b7b88115-f2ab-4d95-992a-ca5e500f9bc0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Juku (feat. Visca, Da Muziqal Chef & ShaunMusiq & Ftears)
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 0x7b0506de2b7f09baee8f7e5549ca212304857f07d5d55f68d0b831eeabdd71c7. 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/ZB1OS2200091.
Bana Ba (feat. Tyla & Shaunmusiq & Ftears)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105bd00820f617b60942ad0fdf4caa6c3f9995836c17ed06093d6e3a3bf9cc3d. 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/ZB1OS2300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac670c28a62d358b30bb1678a3218a2d805c0a6c246d37616eb05712b77fb109. 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/ZB79M2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe355a5df7f624ab8fbc973a6bcffacdd1312e50c79997812da584c2df693d6b2. 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/ZB1OS2200051.
Izolo (feat. Madumane, Mpura & Daliwonga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a64fcce1529f86f89c45c4682208baec84f251f1ff6f4c5b7bcfecf3abea4a0. 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/ZAC012100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471cf923d89264753d5f0f2b1448f029d61804572674f237a008b5ca1a8f8a3. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:24:34Z), 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/ZB1OS2300244.
Bambo Lwami (feat. Daliwonga & Da Muziqal Chef)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fbca9b95596d0b1d4ec4ad5ac0f8136f77112f78fea27c254dff51a3e941a4. 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/ZB1OS2200116.
Ngiyaz fela (feat. Dali & Murumba Pitch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65a7fe755bc337ad7944d561426a709537bcc3eeb832cb26cc8650d2eb60f2c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 956312 (2026-07-02T05:09:12Z), 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 0x3e64f23c0f385d9d10420a20f4ea044404d2f5d0faeed20086d83450d8c5cbca. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZAIHR2300001.
Adiwelele (feat. Daliwonga, Sir Trill, Shino Kikai & TNT MusiQ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc788b61600deeec06388a5c5949420617f1d0d331f6dcd61d95a4a4d039f573b. 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/ZB1OS2300219.
Ngisokola (feat. Eemoh, Daliwonga & Xduppy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c50246d49c4ecc30ad3c252de304cbe5928d88bf124aa83dbcec2b7a5ac96dc. 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/ZB79M2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa652426e6982ffad8f5ec4798c9abce6bfb5d535eee2634fa95b9083c1c5b8b7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZB1OS2200126.
No Wahala (feat. Xduppy, Kabelo Sings & ShaunMusiq & Ftears)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b857f876a00254f06dceb8959e1b2f9f89cb261d76e38afdde3ce5759c0bd1c. 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/ZB88P2300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f08736fe77b69c463c56f683113fb3321dddb8d33df09e7a65ac7baa333e6c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA7RV2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826c31f6a785bc5e21ddfa8d6b10def3de66de4c3d2860e0a34bdac7b3258462. 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/ZAUM72300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed7f32df1f44acfff345c84b2e25c99c07714f6b466578d9a6cbd454e3dd625. 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/ZAUM72300859.
Cocktail (feat. DJ Maphorisa, Daliwonga, Madumane & Leon Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bf3f4a9c85cfa2d4c0ddb5733e09a2a47b473cf5606cc9cba2e6666bd3e658. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/ZAA012300167.
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 0x0d6f9418a878bd72b8d34a05139828f2b780e4fd51dc2cf0171b8f2e768821f6. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ZBN532300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4919c59a4e7644573cf5d646b37dd32dbd0662bbdd78f0ef1eea05fa015db7e6. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USA2P2423822.