Marvin Bernard (born March 31, 1978), better known by his stage name Tony Yayo, is an American rapper. He is best known as a member of G-Unit, a hip hop group he formed with his childhood friends, 50
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 0xa5cf83d936cb889741208eaf4716703eb07486ddea44bf0ee7265f747fd830cf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1e9f90c-21c5-4cbc-8635-72cb86ebddac.json and https://artists.proofprofile.net/proofs/artist/b1e9f90c-21c5-4cbc-8635-72cb86ebddac.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7123fe394a7c284eb6a68845c588468db4ba6bc297e8ccd04d55abebd2f873c. 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/TCAGU2357292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549cfb704f212e9398bd1d774e70984ae732f536c55b3082d43b918bc5d6f8cf. 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/USUM70500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1357de8d5e33e67906c7e302c448105b11d412ec16146efa658d1ef0db3e72d. 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/USUM70500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123167cc86319fab1b9d37a2adf9d41b1df1f3a97b8a09b0d7bcab77eda46e1d. 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/USUM70500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae3a0ba63bc197a8696146f74a6a45735562e90758e6d554b9c3ac5f06aa554. 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/USUM70500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f42122cdf7f6fe77a60e0e2d2986ec4e20efe25c160ed3092071667612fc615. 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/USUM70500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f587cc2b08302025906fad6e73e6f79ee0bd906e9bc02879eb0799e2bf75f. 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/USUM70500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08caeba9a07524168e8d8d521aaa82421f0a4d096209041df488cf6190239f20. 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/USUM70500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b82e49b409b41f32d1600339a474487ed548f4acc014d0a8e56f225e4fc596c. 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/USUM70500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18840a79c14cc9d44c90565daf6bad64414b74d4c0601c43a692dbc1e9da77b. 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/USUM70500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f950f5b44a6ab206352095c3393c27e3ffd35d7602eba8638c79831fd1518d. 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/USUM70500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15df8e4740a2c5ba81d68803a0e5eca377dc8052924f73639eabffbacd28c6e. 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/USUM70500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fb75015fc1476e53d38b8cdce03343d02a21c53c88bb1216ba86b634850ac0. 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/USUM70727444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f918e9e3cea05254fa1d3282d8ed832eac1ff847fd92d2cc487de3f9dd06e9a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAE81044666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1a8770184a7a654aecf190afc08f07762dff785ae85c1a4591b2afc5e941d5. 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/CA5KR2066050.