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 0x1119f4bc87c4c9b9414a7aa45082c4df60aae8a7b3560906f70a0f1a44263b03. 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/df52fa67-09bc-4c95-9ee9-1f6f15aafca1.json and https://artists.proofprofile.net/proofs/artist/df52fa67-09bc-4c95-9ee9-1f6f15aafca1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Besithi Siyadlala Baby (feat. Russel Zuma)
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 0xea4168774a4f412948267b8adcb782a3088cd3b0033fe2367af0348708b59ccf. 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/ZANBU2300032.
Khabazela (feat. Mashudu & Kabza De Small)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7bc81eb29eda91786605eb412a57188c1ea159a2f0321287f580c48c625e91. 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/ZANBU2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1066c10d55e383299571963493d0af105beb3b6eab4a750a07dfd4153604a0f1. 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/ZANBU2300034.
Khumbul'ekhaya (feat. Sir Trill & XolaniGuitars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931f51b52276af62f9f86a15011d585f4464cfe4f7388eda7f97d2ec1e1f554d. 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/ZANBU2300035.
uMuntu Wami (feat. Mashudu, Leandra.Vert, Shaunmusiq & Xduppy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed814686baf3e98992c12f9c96d6c76543eee5f21721ce1c79a138ac1bcbedb. 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/ZANBU2300036.
Lotto (feat. Mellow & Sleazy, Sir Trill, Tman Xpress, Tshepo & Springle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c6a5eb409de5b60909be8885b5083c5de3045c8813321a43d191f01dede255. 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/ZANBU2300037.
Usile Yena (feat. Mellow & Sleazy, Sir Trill & Vaal Nation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1a2c7c63be1c1e9e261cd799f655f9916294f9ed4fac5f9c759d8ebb456f06. 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/ZANBU2300038.
Ngamanzi (feat. Shaunmusiq, Xduppy & TmanXpress)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4940a1dccc27e8ff9c4ad9b5b7f611a651644e456b70fdb58b934261b055d315. 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/ZANBU2300039.
Main Switchii (feat. Toss, MJ & Shino Kikai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33be71c937b7024e678d7b1c91b32aaedb19c732e256de354c1e1564eeb42bf1. 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/ZB1OS2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20c154485f38e39596b173123d83a3333d7f0513c13e286519e6b7e97e80435. 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/ZB88P2400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a76f595a267b6e13fa7df39de8fcb917079f219034ef09d80b8c0d8fdc2d16. 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/ZB88P2400431.
Adiwelele (feat. Daliwonga, Sir Trill, Shino Kikai & TNT MusiQ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc788b61600deeec06388a5c5949420617f1d0d331f6dcd61d95a4a4d039f573b. 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/ZB1OS2300219.
Emendweni (feat. Thatohatsi, Ntando Yamahlubi & Shino Kikai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c9fc59a3430fbb41276a512b503be766d2f89939859871e0a25250a5e909b0. 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/ZB88P2400379.
Mniki we Mali (feat. Kabza De Small & Shino Kikai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde100010175d81445c8639e14da80f6487b4602bf878d9c59d0215e418edfa46. 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/ZB88P2300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d39f4bdfed8958c66772d0acf276a6c44f0bfe6873b4ae28b99f97eefe93f26. 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/ZB88P2300287.
Ngeke Lishone (feat. Russell Zuma & Mashudu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bcd3bb4a37d9dcaec2f13ee7b7da998e73e732c29a01fec01e00b83045a1bd. 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/ZB88P2300292.
Khuthuza (feat. Shino Kikai & ShaunMusiq & Ftears)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8edaa322fffe7906cd9c5b5da62a4f8e11beb9a75c076d934ee92739ea344d. 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/ZB88P2300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593de05441f30436671e7df938b6b6c04831d8525d81ccbc0a1e313aefac937f. 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/ZAC012400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009d40c2e694dc66a41b95eea1fb12ee7ff51f08ffed2f9bf345051647c42c6b. 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/ZAC012400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2952c706ca34038fb21e44147bd48af00575d4c167bf4ca630409ead0cc23da5. 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/ZAC012400418.
Sek'phelile (feat. Malaika M, Siz Kay & Shino Kikai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe453f538f445057558ff29c763f2ff836ee8c9b87e30c70d4eb6611692e539b. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ZB88P2400420.
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 0xcecb68844e4476f862f9c57176940cd116401700df14a576830427198b7fb369. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZAC012401013.