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 0x60801725c46134bc131e60958b84fbf58eb1451965b2892251a48abfc046140f. 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/dba5c5b2-5e18-4230-b016-02731d60bb04.json and https://artists.proofprofile.net/proofs/artist/dba5c5b2-5e18-4230-b016-02731d60bb04.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
123 Mampitsha (feat. DJ Tira, Dj Sbo & Afroboyz)
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 0x33a2234ab09edbf0fc6073df0c5f3560e850feb799cac1ea098903757f2be6c7. 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/ZADTG2100001.
Bakhuluma Ngani (feat. Madanon & Skillz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2089b5eae1a71dc68718c57d67ddf3d3a096b0f96ea4e17fd672a58f7f3cb321. 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/ZADTG2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e6b4f88f66549de4b151a0768c5e0b431adbe083fc6171002431d52585b20d. 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/ZADTG2100003.
Kwaze Kahlaleka (feat. Bhar & Dlala Thukzin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c0c55c1ec3616d20690bff8ad3719e31f92c56e82432c302a0b9a5c45f6cbf. 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/ZADTG2100004.
Msheke-Sheke (feat. DJ Tira & Distruction Boyz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a262ea482b4336cb74be47d1b5fda9e32f1ba7d3485155a4be612577e066025. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZADTG2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d53a86273c228a691f32647e7bce5ba9d67ec031042e844d3986d3d055ebca. 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/ZADTG2100006.
Ntaba Zikude (feat. R-Mashesha & Sir Bubzin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598fd031810fb569bfafa045d146872c4215631df609d91407b99525c0540b0e. 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/ZADTG2100007.
Ruff Rider (feat. R-Mashesha & DJ Fisherman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ff70a9632b56536adc52c03d9464b3998d2dd8fe52fd525485dba4474410b9. 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/ZADTG2100008.
Sduku-Duku (feat. Babes Wodumo & Mshekesheke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb940a2f689afd44bbf39d5d9c983771b61e9c22269f278c299fa4145f464580d. 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/ZADTG2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eeca8010af65e5014b9b20db359d0cac33d7eee64624bfb80ce31a437a4d7f. 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/ZADTG2100010.
Take You Down (feat. R-Mashesha & Sir Bubzin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7969f8ba8ec5c488cadd3b254339a239e9a092b4a2ddf841d809943bd2c38ba. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ZADTG2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633d49b0cb987788e9f2e608518195155551ae5364b33f5f2480bc8e07d73051. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ZADTG2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9f673b8ff0ef8e4835c7cc902675a88b2be5a9281c9cb178f3732a78833050. 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/ZA75S2000050.
Imfene (feat. MaBzar, Babes Wodumo & Small Dj)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a4da1c84bf960342dbbbad18bded87bb1bc2e9fbb41ae4f0608201cabe3e9. 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/ZA75S2000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716663ccd97abfb63e4dca8543e8f17a8b11cbfa7f0b87cc41afdcd685ae4fd4. 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/ZA75S2000052.
Mlontshe (feat. DJ Tira, Danger, Professor & Dj Clock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62955a829a76c60db09d52b0f393a5613655999c5c926663635cae632d4ea923. 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/ZA75S2000053.
Dilika (feat. Rockboy, Musraa & General C'mamane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c88d16299af9d1276a7dc1bc4c3ca151f7ca8437746a8675eacf319c70934. 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/ZA75S2000055.
Dubane (feat. Worst Behaviour, Madanon, Mgilikiji & Babes Wodumo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a3767b3c7fa02b82a01babef3159c18dafcbcbefcf09cc81901bd1e0a26f95. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/ZA75S2000054.
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 0x2e6d6901b5c21485841903b702dbb2a082c0581894b162271ef4c73cffa9eac6. 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/ZAQ651904577.