Milton Delano Martin III, better known by his stage name Marty Baller, is an American rapper, songwriter, and dancer from the Harlem neighborhood of Manhattan, New York. Aside from his solo career, he
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 0x1a632b8404f2bf7363b0d3fb78df4fa11c6242b7cea8579cda9ed8b2ccc22197. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1e60360-c093-4972-a85f-be8871733ea4.json and https://artists.proofprofile.net/proofs/artist/c1e60360-c093-4972-a85f-be8871733ea4.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 0x29d7b4d9142b69bc391a415f57b873a74c515290b27948bc5753b9df9c35a995. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBLFP1667561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e9bdd8b1cc905664b4af94ee4c1473fc65789c54be439aec6bffa9defd37b3. 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/QMEZE1728538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaced98bf4e21f44f7bd155bdb146d74e8ffe0ce24643d8da3d30a500d7404206. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEZE1728540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5804d28baee3c7ebac51c185d9986968961cc1a2bb62d916d571d06b390326. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMEZE1728541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710ef18b1633ade3bb04e13631e40e9388bcdce152fda8502d514d67312c3618. 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/QMEZE1728542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f9fade020c3844c5de9f265547ad4238dfe10f55a72da5c46dd3a408b1650b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEZE1728544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333d9f76a4369b71984903ee2c63bce4110063b01059edbe848c1cdef1134faf. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QMEZE1728537.
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
Ice (feat. ASAP Ferg, Rich The Kid, Sfera Ebbasta & Jay Critch)
Uzi Gang (feat. Lil Uzi Vert & Marty Baller)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bea6aa74f52a3adda74a427c76dc829f4f9291590a371f69ad1aab4abe7457. 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/USRC11600608.
Guns Down (feat. Marty Baller, Liifestyle & Yowda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6610b5af085cde1396dda7e7f3f86b1b7d8bc7f29d3b2be9062016f529d458. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZ5FN1874963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d19b5d942ca7265f821c2e03e192ea89e37664ff53fd8dcd05417d59b3e5a8. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/ITRWL1800051.
Grind Til I Shine (feat. Marty Baller & Hitzroy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5457067c725ef65fc1f430b26b7771abf800a82027a30f4bb9c906847cf430b0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMDA72223857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6809184b28b34c45023097c6156dd6cb30a7086fef579c43e91e67c316db7b75. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CA5KR1825270.