Oliver Sunday Akanite (14 April 1947 – 20 June 2008), better known by the stage name Oliver De Coque, was a Nigerian Igbo highlife musician, composer and guitarist and one of Africa's most prolific r
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 0x2b7b89e6459121172afd7c3cf766ca73b28b355852e03d2beea84cf121bdb902. 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/7bc1d708-7374-4770-a42d-251c6c8cbd1e.json and https://artists.proofprofile.net/proofs/artist/7bc1d708-7374-4770-a42d-251c6c8cbd1e.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 0x02e9f8b3c1328bde712beeb1f0664365521df918d85096c0067348b4e4a9c13e. 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/USLZJ2149698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30387dbf32031dccff68c55151c5b5b0009ce16b4e59ca92d186efc8435f2d6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USLZJ2149696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86134dff1de2ea8a3d32bd20b668d58020fda8357677f71486c1029ccb7412cb. 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/USA371462535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc494d773724e078affc2cf971f9ee2977d073f8f515e1cd169bd8fc81ad2b4da. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA371462540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9470227828de45122998cde84f6d45abba42bd7ab45fa7cff6c04084a16911. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA371462537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2dfa6670cbab78a5d31d79526b506915e963050bbcaf4ae0696d320bb28d69. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USA371462530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cb701d0394f731ae015c5696555ffcbb2213e97d0eab90d483c31395d10d6b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USA371462531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03ea72d098d821740edeff95402a73b0de8a2fa0ed1543887fbc1f2caa43320. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USV291463955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be8b08206063e0217477174774850e27f9dedaaa80679ac82991465a844dfdd. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/US3DF1840981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7632897fa30b2dc291079f7b2230e6b6707089f1e90d1482a4ce8ad46a662c38. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/US3DF1840983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76748b805365984ccb53d9850c752edfbe53d4646d016038cf37753914b93f7f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3DF1840986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728aacb892513c8f987784f4cd1172e95d1efd7f9b47c39f1ee5a6ae718bdcae. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZXLZ2310296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ac7916b2f36142a647319b3c69c52eb9d2b2157ea62821250a50f25f034225. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNW72349337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3cf3d4ad8606fe0802f37369391c504d69d4a469bfe4eecf502a11ffee8faf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNW72349339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd02e420ca9b5337d1044fcfa07d4a192d7026caac53cf45a54ededdf02f053. 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/QZNC62318866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7f8eeed2dc88eec3e2d05f736318e41c9f3a4768328b3e862efe0aa2aba5fc. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZNC62318867.