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 0x516cff43b0bfc8edade1a2ddf067efdb42b0065d3e0e0e02835ba4dc96a3c4ca. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d27ddf4-5c42-41c0-ad07-836f32b3922f.json and https://artists.proofprofile.net/proofs/artist/2d27ddf4-5c42-41c0-ad07-836f32b3922f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thandolwethu (feat. Yumbs and Baby S.O.N)
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 0x988fa19bbb3057430e0f847f1fc72350805fbe789baf34f78b77d38e8b670936. 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/ZA56E2201072.
Dzepa (feat. Marlode & Owams, ShaunMusiq, Ftears)
Umthwalo Wam (feat. Sandza De Keys, Slade, DJ Target)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43f8f605a0354fdab3d4509d4d0ede43e0ee469bd4d7b9fbd94c6541079a44a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:34Z), 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/ZA56E2415778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cd43994e0073c63f735ae7998cf2ad6b608f119b1858d186073cf33bf618cf. 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/ZA56E2201859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71502b887bbeba9f49d60d5d759cbf9152dc7e8885422a850c94be7869e15d69. 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/ZA56E2303725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91553e8fbedefc84f0419a2184785461496e67c6b507160773f5ed73c039baff. 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/ZA56E2416290.
BIG FUN - THUTO THE HUMAN & 2WOBUNNIES VS INNER CITY (FEAT. JAY MUSIC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd0497641cd60c012f6e6ae0b89a1650dcd3ab72481f713479d5564a84dcda5. 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/ZA34K2402283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4af31414c9d5a2af324f7e5644c7bae10f08251c74f87aa8ac2b8d819227a1. 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/ZA56E2303964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd0497641cd60c012f6e6ae0b89a1650dcd3ab72481f713479d5564a84dcda5. 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/ZA34K2402283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a568a83e6ef6deae185051dbffe2fc23842df935c3d6ef96800e4f205d9bf9. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/ZAC012300440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc35dc82541634d7a4b3ef29cdd90261cc366893bad222645ec7d316abb6e588. 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/ZA56E2420095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27145b8ad5cda9e11cbd13f4baaca3f9257b3e04137c01018a153566831b3f7c. 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/ZA56E2420199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166b7d4b67bf3d5e617b98fe224e5e1b244b6374d787a3de962c0ae4162794f0. 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/QZWDW2495649.
BIG FUN (RADIO EDIT) - THUTO THE HUMAN & 2WOBUNNIES VS INNER CITY [FEAT. JAY MUSIC]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5fcad86204c5b0d4e478f07d4361c7828ceac40dea98b597f0c60e589220a2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ZA34K2402326.
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 0x3844a50d8ae1cca893968a164cdfd4c7aee20e4510aadbfb80c4fd64b52c3cea. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ZA56E2415762.