Oladapo Olaitan Olaonipekun, also known as Dagrin (25 October 1984 – 22 April 2010), was a Nigerian rapper from Ogun, Nigeria. A film of his life entitled Ghetto Dreamz was produced in April 2011. 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 0x0062909f3dc37de322b561d9c15d6981a35d628fbffb2022958e1993c0550ef5. 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/dec200a8-3ab4-4b33-a899-4c24193c5dad.json and https://artists.proofprofile.net/proofs/artist/dec200a8-3ab4-4b33-a899-4c24193c5dad.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 0x8bd1bcbf1ffa5b4d82a0ca408c5a799880866a1174b764b2ced7345f93947e40. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:42Z), 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/USBPN1000458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf859640fde02553b62b0bf6226318ed041cc24c6fb120f0b6674dd4350bd2b7c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZS1Z1645754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df76f9bcf86729d70978d52b81ddb4b42e202a3a939a86f149afe4e0b8d339a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9M2244067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839af4b9eb7e9e90fa1b719d12c6fcb1efa7f9e2a47bed54d1b3cd1d88e43ce8. 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/USBPN1000499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f2431a43ecdaa8b827fc578eaed5ddf8c8635ba097f56ee84b14bcb25f0c6f. 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/USA371555136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2783821d3bca46419af047b34fcdb40872a26591a821709945c23e9ac1118cc1. 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/USANG2046147.