Derrick Sarfo Kantanka, (born 14 February 1995), best known as Amerado, is a Ghanaian rapper and singer from Kumasi. He is the curator of Yeete Nsem, Ghana's first news casting rap series. Early lif
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 0x192f2d2dfcdeedb7fe151f12a1d210523b1460664acd726c3eb0d1a45b57d931. 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/9b8b523b-1994-4284-b8b9-1f675eefecc4.json and https://artists.proofprofile.net/proofs/artist/9b8b523b-1994-4284-b8b9-1f675eefecc4.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 0x320f4ae57e2e5d0d0ebfd6d9f70bcaae0450ca048a1d82f003af25ce8845c038. 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/QZDA61909357.
Dede (feat. Kwame Baah, Chiki, Phrimpong & Ratty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5365189e36ea5137938ca366e1d59fa854397e7b8f49e2ee588626ef7468f5a6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ESA011963798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e5af9b85580cb2948606a44281b0ea253c34235c994ec90fc5faef0cfa9a78. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ESA011963799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cbba6c9f1cc3974bc226e2dfb6d82cfa19a510178ceadb4d4b4e03122776ec. 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/ESA011963800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44ba4e77be6dff666ce566d89eda14fbd2795549d48a0c09aa5c02830e91119. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ESA011963801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3825c68512dffc60a25b4e2ec552963713c3d8411294bccef000524c12772cd5. 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/ESA011963803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baf537db67b6f779bb8a740661c55d7e1661db07ddbb5fe36d19d14be84f61d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ESA011963805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee843dcd895d2bdfc83fa2d3d7eba6ce4dfa61bd7aa3be31c7885828b38de68. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ESA011963806.
Lockoff (feat. Theonlyrls & Lexis Drogo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaa5808738c282510fec3a68da002fd02117913456b2085c8508b232ac6f397. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/UKXN21916245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd4c34d1b2a208c58f7aa9950d830b5a36b8a3f2cc2b9bacb70d6142b000e73. 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/QZGLS2168984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051ad3443e8bf333b54acf6c82d4273d43a07b4e6313e26c08f70cacee36f289. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMZ92136892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d63de23386be0ab5ba0b34f1416c42123e8c42625b44bb63772de562c572784. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZNJW2135284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54200275327e23bd681b71521bc0d0f1b948efd224d34f29f109b41e63c0802b. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZNJX2134412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c3948b07466d1cf7de5ae31a7ef50da96cecc5ccd3908f82ce85bdfd488100. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZNJX2134413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12194a09ffab03b273f08a01a94c19b16acdcf7d699125b86e6c1b03a0e3501d. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZNJZ2224989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eede9df83717f5fde26d4f60e76f3a137bfaf34e2f80e18779e1e9962ea6f4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZW9K2244653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd65ab09eb937609f8e4f89c0e05ba7a574ffd1566521411e2a5bca93ff0b86. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZW9K2244656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b8ecf3f6fb22d7355852c03deb7ebdcf1dbc08393fa2ceec597c506db2ed0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJX2363916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae60b36f8954fbc931a27458c5b8ffe91fca6a494c49dba1e36b46d1c21340e. 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/QZNJX2393238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc308c262c537d0db78658c785610055b739e8ce92a1da32cdd877243d18ad38d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJX2393239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30569ab670960c2961d86bb3e9ae9fc6594da88d773d61da3d9a796d96ebf52a. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZTVM2402730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d343f786f23019618ccdbd3be87e0652a24fc03aeb268bc086f62f83df4219. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJX2535081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f42d11d20bdd3b0568ba56ade913f5afcd4f11e1e00cd750f9db586a645b853. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ESA011926027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ab48d4b00ea2575027090508b198360a1ecdb23b8ca1843a52016a0da48136. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBX722300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05888154f68ee06bfe8b452dc9917b39764f21cbddb82d81c9bc0b2dc18a2881. 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/QM4TX2570328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0f2ffb4a0d928847e5d1cac80950465f4aa8eed98e412415e849b59a5f032f. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZFZ42127962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566fcba560ccc0993977f8b87d51647337e2f1404a495313e56df53e41b218fa. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZMZ92267153.