Jazz Ishmael Butler (born October 3, 1995), known professionally as Lil Tracy and formerly Yung Bruh, is an American rapper, singer, and songwriter. Butler is best known for his collaborations with th
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 0x3a658607e90ac4c6bffe56b2839128aa178f4f4f943dc73785274b0145b11379. 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/1d5b14e1-cbba-4582-b5e0-39fb9cc59ac5.json and https://artists.proofprofile.net/proofs/artist/1d5b14e1-cbba-4582-b5e0-39fb9cc59ac5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hello There (with Lil Tracy, Corbin & Black Kray)
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 0x9e269e3b44e9dbbed2dd014cd9239ee4c58f8b384436d71d7b93ffcd720814f9. 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/USUG12303141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acd8bec87e93cd772ee87e521144659fd00d128207c455699e7ff790fb922bf. 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/UKELY2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad3aa667c42e0fb0fa429f9b6cfa72ebefefdb1b361626047c0f744579f5145. 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/UKELY2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa860d1fae1a4986842cf17b09a0640bf284e3b0f36b9abbb91673b2d55e92e39. 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/UKELY1700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dc6deca4f4101d8b6fa833ac33db3d417651a54007d94246dc91773ab6b48a. 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/USQX91903113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2703077e904aff3b9aed4f506fbd8f3a10d6ea3957f25e4b3ad1987b2a9c218e. 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/QMFME2486192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be49eec7958fa48441b147e654dfb5942396d0eab0256d4ce7900187471a6e9. 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/QZVEM2348046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e269e3b44e9dbbed2dd014cd9239ee4c58f8b384436d71d7b93ffcd720814f9. 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/USUG12303141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c5e168b286fdaece0d8ddeba61bb56002137c258fa9daadbc41c109c5b4d8b. 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/QZ4JJ1846075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616c4c29cca555f4e1f94445e1cfc6d61f418fc4da910d3d5a6357123202b98f. 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/QZJ841900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0009dc2b689b920390ea64b8494b01dc87b2e9bb25a5810a72093cc9eec2d4. 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/QM24S2203116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc342842bfdcddb855edb27a1f64b5add9048678cd1e82f032704b3c9ba82edf. 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/CA5KR2040626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49666253820efa34985d2645f9c3361af1adfa7aee993a3bce614e9f9d151a27. 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/QZTB72335132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d3eaa999f699c99eaeda0be2170cdb644c3d58f0d4c7b20dcef8a250749fb6. 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/QMCE31902417.
Rich Forever (feat. Lil Tracy & Zelly Ocho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841eaf8233472c6b3feeb06abae27c316b00d05d28f73ce000c46b8ee4c052aa. 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/USLD91742223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857a622ce4e965590c365671c7d52a9a4c6548e402e1e1d7138c305931aeaea3. 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/QZ5FN1707838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0815a59155350d51d10b5535b37c320b6020d8237ffd509611f2a3def1dd2421. 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/USUYG1158988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc6a5639dfddd4dd6c6563da840a2e5b6a7b90d9d15a9433be95ae26d89cf7a. 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/USUYG1159003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3421ea53e4f547a2ed5068edc45d7cf04bd1e70e776e368034fdad2edd1a597. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZHN32364301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038c5c7299b5098d777292cf8032029252da5e2463d2c458dab0ddd5c7a606a6. 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/QMPKX1620729.