Rappa is a surname of Italian origin. Notable people with the surname include: Elfin Pertiwi Rappa (born 1995), Indonesian beauty pageant titleholder Michael Rappa, American analytics professor Fic
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 0xeb6d984e69c87086ba09a806072e1a22f28005b752c23eab7477ed27337352b5. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5176080-0d82-4c29-99a5-20e23f97df35.json and https://artists.proofprofile.net/proofs/artist/b5176080-0d82-4c29-99a5-20e23f97df35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Might Can't Fuc Wit U (feat. 03 Greedo)
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 0xa5ac4ea9b22437cb90dc2b952f677d5fab6e35f218f83a4f8e7b1a8c76b3c07c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USLD91716579.
No Kappin (feat. Panda Badazz & Ash Bash Tha Rapper)
My Vibe (feat. Project Twinz, L4 Get The Ends & Whokid Woody)
Let's Party (feat. 03 Greedo & Whokid Woody)
Sunshine (feat. Lil OneHunnet & 03 Greedo)
Fucc Wrong (feat. NBA 3 Three, Lil One Hunnet & Trill Prada)
Doin Me (feat. GoGetta KB, GoGetta Essco & 1Take Jay)
Stop Playin Wit Me (feat. Santana818, Doknow & Ji Bandz)
Roll Up (feat. GoGetta KB & Chris O' Bannon)
Spray Sum (feat. $peedyyy & Whokid Woody)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aa6ab2dd532a3d8f3647ecaaba82acc0135b0d8977c704205d257824d5d4a6. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QZS7J2146993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876e35f02fca370a228cd1c9ce766ec2402a95d2bc6e96983608952298fb338c. 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/USLD91736972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f66e021d0eabbe5b1f521794322321ec2ea748eb0b4c5194bb089d93ecd42d. 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/USLD91745540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd894d335810487e48a3fa6218559eb27c7b504555d06fd1fd9269a10a10fc1ef. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:43:59Z), 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/USLD91782556.