Leonard Simbarashe Rwodzi (born 12 April 1999), known professionally as S1mba (pronounced "Simba"), is a Zimbabwean-born British singer-songwriter and rapper. He rose to prominence with his single "Ro
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 0x27efcff6cdf316d417c356277645a6ab50c18a4dfdb486e118735c1d691c8dbe. 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/5cbb1784-75cf-40e4-8091-06f6fd0d068e.json and https://artists.proofprofile.net/proofs/artist/5cbb1784-75cf-40e4-8091-06f6fd0d068e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bounce (feat. Tion Wayne & Stay Flee Get Lizzy)
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 0x72754dd683995e7f7f0d66b33c47081162b894afbf3e1f089c96da3634abde7f. 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/DGA072120611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ca354e4331213249dc77e31dca900d5502169119d8b61e487470c5b991e2bc. 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/SGW502366181.
Rover (Remix) [feat. Poundz, ZieZie and Ivorian Doll]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045fc243fef0a613042b79f13e52bca33fbfc2fc07ffa42ed3209a97989efad8. 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/GBAYE2000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c6089d306a2290755ee9817f849bc4b761dd3f4da37cff48eb16a98769a130. 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/GBAYE2200202.
Plenty Plenty (feat. S1mba, Midas The Jagaban & Ivorian Doll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c00323c2f748552aebef706bff76b64e47da6955643b2df87038eaf5360434. 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/GBAYE2001019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a391b123138144d0500ca4a5ed4a9a2a82bb55301d5ee7503327be96293cde1. 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/GBAHS2001049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5fa6697c01b809048414cd936388f1a626f6d276fe4509aa48156e702b018c. 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/GBAYE2000845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbab3cba5a19b1cb39d02cff2884148c6c2e3a260fc898382bd55e609532a14. 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/AUNE32300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465578949dcd98a1a565ef7a73e47d545b36936c3be6e6474322b635377f326b. 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/AUWA02301053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fdb00d6d002f7b92511559d46419c43d46163b16d675e5ffa190806a254200. 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/GBUM72205973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050c87670c8209d27ce2144e785d129dd6318c1ce0626d573270e587064faef2. 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/GBLFP2237000.
Rover (feat. DTG) [Lower and Slower Remix]
Rover (feat. DTG) - Lower and Slower Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1256b2b1628dded3d4c520150856338b1a71f3f7e0c69e5c86d7d6b75927157b. 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/GBAYE2200332.
Rover (feat. DTG) - Higher and Faster Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2843dca3265b49cb5f9dff505bed12a74e1399c9642e2c49394b1d5d1d0d5a. 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/GBAYE2200331.
Rover (feat. DTG) [Higher and Faster Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2843dca3265b49cb5f9dff505bed12a74e1399c9642e2c49394b1d5d1d0d5a. 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/GBAYE2200331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1256b2b1628dded3d4c520150856338b1a71f3f7e0c69e5c86d7d6b75927157b. 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/GBAYE2200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2541ee2222da3cb0a7d4a0627d9c95c40efb77de14da7c9d641d2a529fafe70. 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/GBAYE2101062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bde1a69bd8b04214dbf391890bed3974bd73354b62f40fe33b2f2e6514a4852. 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/GBUM72100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be7ce3f6cb5040c982c96c3ab5c820a9cd6ea001828149ca57c4d02c7e92879. 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/GB5KW2003710.
Naughty Naughty (feat. Swarmz, S1mba & Noizy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58933669bafea0d8f3803db88b4804136e01f4779ac7fd3b8c6d7414be099f82. 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/GBAHS2000917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cb5f47d0bc661da627a761c3a7fe58b38879db6f0178d1dae98a9e45673ec1. 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/GBARL2000769.
Rover (Remix) [feat. Hooligan Hefs, Youngn Lipz and Hooks]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b904c48d77024bc459ec9fd75bc863f9299ec654441d58f4ffa321e357d3c. 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/GBAYE2000455.