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 0x9564c436651e922add5d23cb64242ca24563ab4448fcbac0f6c508446a4f7ecf. 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/635e4345-0ac2-48ee-8fe6-3b092658e57b.json and https://artists.proofprofile.net/proofs/artist/635e4345-0ac2-48ee-8fe6-3b092658e57b.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 0x68363197c4d30a9508fba2fb27a359fa7e4023562f8357de10e5d5685a612425. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ZA56E2415757.
Why O Robetse (feat. TjaroSuperstar & Sims Noreng)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd54dbcea99f6bf62f7798248e00900842d3454a44c7ad18af987ea169950f0. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/ZA56E2419758.
Zekethe (feat. Scotts Maphuma & BenyRic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c032453a8f94a59da581ff22fdb2d3601ebb6e600d223372d25e73a6a23c8f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ZA56E2528332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97977cdff164a6d7c18cdfa13259480e460dc2b4420ec4ec2b4909bd5abe46aa. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:40:46Z), 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/ZA56E2528335.
Iscefe Esimnandi (feat. Mellow & Sleazy, Madumane, TheBuu & Lastborn Diroba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeeb60d1863930c6787b7ac068ba2d6bcc80942a623c6817374ef00046b048d. 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/ZB1OS2300224.
Ukuphuma (feat. Soul Revolver & Mluusician)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c86354406f3873663a1d80df9333ae51a9bec7d889fcfae679a427539ce763. 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/ZBC042400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7e5c56d93a187b7016070bd721c2695d2b908cd8dd6ee22afed71cf30d3814. 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/ZAA012400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf779ef1bb95261c0c7fae3b3073c7f64ce7df43c6ac53558757d0e36b8a15304. 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/ZAA012400256.
Wololo (feat. Scotts Maphuma & Mellow & Sleazy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915017d77d068f4a2885daa103a2b994af7d4b6528b9d0dcc8ef8b8eb5b6410f. 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/ZA4BZ2400080.
Last Men Standing (feat. LastbornDiroba, Thebuu & M na B Projects)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8922534d5cacfaf808a347ee2cb77c5155f561e3b9d70c68390087387edd76e8. 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/ZAA012200221.
Chom'yam (feat. LeeMcKrazy, Dinho & Thebuu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb988c4509eece305bd412ddf7ed5639499d623fac55507d7f8a4dfaddf9ff57. 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/ZAA012300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a81213fab3c961f3227768ba544e93acfe245a2058f1acfaddce4f5e7806cd. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/ZB1OS2400438.
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
Mdantso (feat. Leemackrazy, Thebuu, Eltee & Skyywalker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f59115c7e3bbb16a31b84b3975a3a56e22bae7781a60d0456c66dab841be882. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ZA56E2420535.