Mellow & Sleazy is a South African duo composed of Phemelo Sefanyetse, and Olebogeng Kwanaite formed in 2020. "Chipi ke Chipi" with Justin99 was released on April 15, 2022. It debuted number 9 on Loc
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 0xd910515ff2a0850c83e6708f033fc59926df736b550ea00ec957ae4baa7c2f85. 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/5d68b733-8740-4d26-82ee-e2cf86598334.json and https://artists.proofprofile.net/proofs/artist/5d68b733-8740-4d26-82ee-e2cf86598334.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 0x4bcc9ec03798d863268422c89044b23bf8493e5387dc00f2bebb6f78fc7f7342. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZW9K2391238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702918ce98eb9659c1e0a8d19789108ac7d25257a536ba7c8eb3ffaa11f21f50. 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/ZBN532400023.
Khuthuzile (feat. DJ Maphorisa, Pushkin & Kabelo Sings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe606ebf4019da3aa3fe59bac848fb9e723303244952b27281c0cfff2c46e10c4. 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/ZBN532400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6537b29e9fcde03d11de48c6ed21863bb5726f73514bcb745925e645f1f95f. 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/ZBN532400025.
Kwaze kwa mnandi (feat. DJ Maphorisa, CowBoii & Al Xapo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c310cac4da7e921422f10c0ce175345d03c4e307165fa1a4c3e3664d6845e34. 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/ZBN532400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c352400623ab60878f065efbe334fa584bc58d0d43fcb468ff02b55a600655e. 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/ZBN532400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b65c7ea97e6303b186e098dc6091fffc9d3cc954ba8ca09069beeec1182149. 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/ZBN532400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef297011662cb7500608ef50745986490cc5b7e9ae7c3f5d3fd515e5144dcdf5. 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/ZBN532400030.
Sheshisa (feat. CowBoii, Lastborn Diroba & Felo Le Tee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde30a3801b9e4f4787eec0ef95bd567f818e2913d6382e52d51bed838f19820. 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/ZBN532400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe355a5df7f624ab8fbc973a6bcffacdd1312e50c79997812da584c2df693d6b2. 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/ZB1OS2200051.
Ivale Mfana (feat. Djy Fresh, Dot Mega, Mellow & Sleazy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf937f05396e45a72592b18217e1fbc221ca59a28f52e2dd33554cb60fd9f504. 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/ZA56E2306226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13deeaa3620f38b0f1cf453cd5af4249fc980bc1a0671ec35a3aa16c78619a87. 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/ZA56E2200161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ebca6240f13df88cf3c0f3fdb860b1317ed7943498682225e93d319009ac6a. 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/ZAA012100210.
Never Ba Loke (feat. Tman Xpress & DJ Maphorisa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e91c369e9d5a07fe67b803c77727972ce66115aa2c939117594083dc864723. 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/ZB1OS2300241.
Cheating Curve (feat. Scotts Maphuma, Leemckrazy & 2woshort)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d917ed254f33bd496d03b27ff260744f1152446447d3b298d7fca9ceee6109. 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/ZB1OS2300240.
Teka (feat. Mellow & Sleazy & Djy Ma'Ten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96da0506d28f2da8aabe9997cdee30954c48c51a1e1b1694b688d18050531341. 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/ZAA012200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d314c008b6d592e698ec2fdb4d484ee62d999bc5759945b028f5db6d94cf400. 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/ZA56E2528890.
Idlozi (feat. Xduppy, Mellow & Sleazy, Yumbs, LeeMcKrazy, Scotts Maphuma & CowBoii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b4dc8a94e7337c970d351f5c80a3889c55656c592e320bf58eb4949d348a31. 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/ZBN532400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a0815bfdad59a56a2d6facfcc67d94bac6b76ac12b01c68a478c335674ed62. 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/ZAEI72400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e3a39160d5b0860859257c14c85f13c2a62052efd389388bac6ea488e9fb64. 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/ZAUM72202517.