Manctaj (born Kwabena Boateng), is a Ghanaian rapper based in Seattle, Washington. Biography Manctaj grew up in the Seattle area, splitting time between his divorced parents' households. He beca
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 0xa308871b541e8b3b84ededd4e4691c3f58bf3ba1b71744eb9b3859583453cc41. 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/dace41c4-f9c5-4d79-85dd-02d5a5f8902c.json and https://artists.proofprofile.net/proofs/artist/dace41c4-f9c5-4d79-85dd-02d5a5f8902c.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 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 0x7ac12912287d4c515f040016fc551ecd4303063fbbdca5c330cf7f9fe04b3aef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4DW1697666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0778d513096b5b7f94728fafd7901cd9a87bab691094419985ced3858d1e5500. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZ4JJ1711408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4693b53dff7c9798e67aeb9af11d5bb673dc974f17b5b33b8d5748a88e586577. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ72015979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eb1a52d271c831d2fa8b3eb909dee7d48ba8f6abc191edc2a8273828330075. 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/CA5KR2385734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f7fc9a40d24de8fbdc2751239881029654701925d680e244215e0fd26c2455. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USDY41991119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc883af3ed6e577700f82debbca47af8aee4149652cd215862d1d1f322986736. 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/QZHNC1948331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ad352df7364bc6973f73931f3355e56c65d2ee3c69b11f60ba388a1281b335. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR1580654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a313815d068e8e99b71a49554fbe0abb71601dfb865c3f0707bb8048d20bac4. 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/CA5KR0036104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b785b3475a789404893653b644cd4c03622d40178920679eeed9c8d4f3a4c3. 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/QMLD61400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872627b76d58a03328a6f55c8e7b093d08131a655230b57736e844c06d986978. 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/QMLD61408236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19480aa48ed723340f027830de91280b4a331313c4de1837b440f12d40bc2d3. 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/USZHR2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d31624e607b8791ed10a2f1cfd77026d7667e12335c8dd66f774ecd22317a19. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USZHR2400076.
Truest Story Ever (feat. Bleezo & Macntaj)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df16f87cc54228bafce7312552327399543277be9864f5ba9d49f35ba86973b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMRSZ1901076.