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 0x30b5bc54e46f6e76c558a96ec7ef24b32b6913a1b5b7f2c21c0a62e4b16ed0ac. 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/b5eccd40-fa70-44f2-820e-876e31674afc.json and https://artists.proofprofile.net/proofs/artist/b5eccd40-fa70-44f2-820e-876e31674afc.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f37f6b8fa8e18926696bb6c13d31c407b1080bffbc66b8e2131a1b315be008f. 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/ZB1OS2200153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53228c9b2e734c91d750af795752c6ccdc79f7314e8c08db6728f9d8eb58f382. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZB1OS2200151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f14f7bbd0e6abf698ea93721781710ef686bdc9127ca07c31b74cdc1fd7b0e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZB1OS2200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663fc781055c17f2edb4e91975d9714d2df58a2bb4a178508838f5f1ccdd460c. 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/ZB1OS2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663fc781055c17f2edb4e91975d9714d2df58a2bb4a178508838f5f1ccdd460c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZB1OS2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0dc888d678e3418f21609c70e8139cd689872cfa0cf079773b2ec00b526b34. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZB1OS2300197.
Vimba (feat. Scotts Maphuma, ShaunMusiq & Ftears, Stady K & Mbuxx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85aa6c2c3b69a82a62adbb00e023323f5bebe69d709194e72e5dd5295684cfb. 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/ZB79M2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddeb7b3935cbff09ffbbf9e16d3e13bb40055efe6cfbcb95f1141f33ed44d73. 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/QZS7J2312668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d1ce43f38a4c544dfb4d8f40bb0a88aa445a96f88489aa0e67f50cd458536c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZBO732200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66499abf550e59c1fd22637cd44788432139b4176885a71cec3149b2ac95bd5. 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/ZA56E2150046.
Ntombazana Shikisha (feat. Bontle Smith & Sandy Mrd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875042590da91cf64e819c1d1d0f600206e274d575f9516736172c2f22e55e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZB1OS2200056.
Serious (feat. Bontle Smith, Vyno Miller & Kaygee The Vibe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c424c18fd8b073bee94fabe6a1c0b1908aa10a3e5d876e1da1ab03ac13d3f5. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/ZAC012000360.
Banomona (feat. Bontle Smith & Nia Pearl)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f168ffaf683090f359987f703d5a32eb8636560c87d6ec4fde6c75bb84d684. 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/ZB1OS2300171.
Amanikiniki (feat. Major League DJz, Kamo Mphela & Bontle Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1787f26facd8d4a69cc3c7ddd355b2029da6c627991e19827a1cc8dadd3c3df. 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/ZA0I42000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513c293e619a066d16f4a28a31cd1595ff723e14bf896ad3c6040a530e00c14e. 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/ZAC011600855.
Sbongile (feat. Masterpiece, Bontle Smith & Myztro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeacb8a83eadae8d5eeac0a804b99b52a06cb08c24f24ea8af3913b7657b3d3. 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/ZAA012000120.
Chomi (feat. Lihle Bliss & Bontle Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4b4724791a03b5b90d90fe064dea17d88cdea0037cd6e62fe430b75758e465. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAC012100078.