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 0xd71c953a8a2a85b98ef2e8658ebcf01b0b967acb3085295149336a2feca73db1. 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/ab9c292e-f6cb-4c96-98da-d1b893430738.json and https://artists.proofprofile.net/proofs/artist/ab9c292e-f6cb-4c96-98da-d1b893430738.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 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 0xc76a8d494242840e36d242a059a4caf8082e1bc4b60667a6065fdcd4e201ce44. 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/QZDFP1931268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd232b656366a3e33de81741dd17d653e6240bf7e6ed2276d6c998db55827cbbc. 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/QZDFP1931269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9121cbd3f31efa184eaec47186bf9788270883e8645874acea0dab9c1ede0a4e. 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/QZDFP1931270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c536bd0488bf21458d385d24663c3f41d15f308182d4881d9de756694e2b8f. 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/QZDFP1931271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97048e5a6f8411d19874cf6b4b3d870da41c9dc5837ed00d19c3d25315808278. 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/QZDFP1931273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdd8dc41270ea0d13fa7033529f6fd4ae2c45bffe3a17945a9332b53bf1e0f6. 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/QZDFP1931275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cdf51509565d081d89342c50721f3dc46be4831a9ee6b73a7efacdd5858167. 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/QZDFP1931276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff269e61bc3b04828e493b384bfb7dc5d9124016b7eac4ae4ea5fea58a4186b. 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/QZDFP1931277.
Ke Rata Byala (feat. SJE Konka & T.M.A_Rsa)
Biri Marung (feat. Sje Konka, Focalistic, DJ Maphorisa, Scotts Maphuma & CowBoii)
Biri Marung (Edit) (feat. Sje Konka, Focalistic, DJ Maphorisa, Scotts Maphuma & CowBoii)
Nkhethe ko khethe (feat. Dj Maphorisa & EL Mai Muziq)
Hamba Nam (feat. Mellow & Sleazy, Xduppy, Mr Pilato & Egoslimflow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae624057596102b4598552d309c31e06701b4a0c39ea6447d346ada61cd6b6d. 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/ZB1OS2300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b72460b77f0842d9c7c9ac92afc28ca95766848615a5d76c7312e055ed896a. 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/ZB1OS2400257.
Sgd 5 (uSayitsheni) (feat. 2woshort & Kabelo Sings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881fd07f004afc33241f7ba170ea61f920f35a25ebe7735e5297277678b42b83. 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/ZAA012400344.
Tsoekere (feat. Mr Pilato, Ego Slimflow, CowBoii & EL Mai Muziq)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18952635176f6e164f85035db6c20bb26b0595179c86baab5f0751b9fcfed5b2. 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/ZB1OS2400367.
Chomiyaka Jo (feat. Tsitso, Mr Pilato, Ego Slimflow, CowBoii & EL Mai Muziq)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dec109b8c32772c8994886c79897ce766428f852b1366a89ad4e9134008d0d. 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/ZB1OS2400370.
Mo Rekisetse 'Manyikinyoso' (feat. DeBow Taliana & DJ Maphorisa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a87bd633a6bdaf09d001b9baba14ad8aba247ff9192be6f573d3ea23edc41b. 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/ZB1OS2400371.
Bophelo Bo Botse (feat. Mr Pilato, Kabelo Sings & Ego Slimflow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab9f9ee89fbdab05446d4b350f9881f42392b9af504934a22d17178acc8adcd. 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/ZB1OS2400372.
Rabaiki (feat. Tracy Vocals, Mr Pilato & Kabelo Sings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbf891ad1ece2cb0cbb3a831345fc6d1b36620ca7f7013b99ac00b78b3b6159. 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/ZA56E2419899.
Ke December (feat. Ego Slimflow, Woza Sjax, Debow, Scotts Maphuma, Xduppy & SjavasDaDeejay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e11a7bd68da6cee5e89737fd15e3c9c0cda9f91aec3efe1874a72cb4e80ff62. 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/ZB1OS2400440.
Ziwa Murtu (feat. Optimist Music ZA, SjavasDaDeejay, DJ Exit & Mr Pilato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95662683061cc3df590741d6cbf4f0eadf1f0958506d6855afbaf49f318c9929. 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/ZBOOX2400061.