Mark Sagapolutele (born 15 June 1981), best known by his stage name Mareko, is a New Zealand hip hop recording artist from South Auckland. Career Mareko's career began as a member of the Deceptikon
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 0xb6d121038764af0671d6a7ab5c6c75d8cea33b61f35ef02be634fbbd330222bd. 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/9b3f180f-2527-4546-a622-4c4c58a7cbbc.json and https://artists.proofprofile.net/proofs/artist/9b3f180f-2527-4546-a622-4c4c58a7cbbc.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 0x6febc536e53ae41fa05d00997a205319a121a8955f96b88841ad4d5e30ad3f01. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/NZDR00400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b3fba3d2d7022882f1d84845b2f1b8454eb1cbd2d6f52c1eab9de32b43b35e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NZDR00400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce15f281f4ad3aead44883044ccd7d06909f31d85b17ae9abaa8b4a6f86ce69c. 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/NZDR00400005.
Villijah Nation, Vol. 3 (White Sunday, Pt. 2: The Book of Mark)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b08b3f9c78e4512182cc7740abcb850f4cea72b4c094a70f103f1c1f4f1566. 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/NZDI11300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b993ca27542a972ebcb88cb1846212dacdf791db3df2a7859dabdba16e38096. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/NZDR00800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748ea6d6a6f0263b0eff8cefde5d76a41cc0201d8bcfc5c9cb4d8e9a50181374. 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/NZDR01300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453de9eecd6e762ef6ef32c465c0d64d5985b5f68d1c62cdf577930d20f1a6c7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NZDR00600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7115a3deba782f8d6c2651c7fc9304c3b0cf9482fa642618363df000f11f4bf. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USBHD0901924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cb847ce3d5971147d2261209ab85d4338d322bfa82f065f98ea56b2d064bde. 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/USBHD0901926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6793a358c15616f0990d694935b64a01e1b13bacdf040c39903669e726acd09d. 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/QZFZ72225306.
Fast & Furious Presents: Hobbs & Shaw (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e440f2a65cff79597ab958c791998d900815e2339e3646f45fc56da7e0f6b88. 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/NZAM01700460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a318611a70686bb4cfd5c043732ccfdf4160de10e47f99e855f91ec0d71434. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NZDR01200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0382eb6564f8aacfd8c9f5b543f17e9039eb8a5f4f68923d56cc44e65d5022e. 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/NZDR00900026.