Steven Umoh, better known by his stage name Obongjayar, is a Nigerian singer based in London, England. After releasing several EPs, his debut studio album, Some Nights I Dream of Doors, was released i
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 0x6a31d667ed2c74593621d10c2d1c6f86e3870db5b4a3a5c62fd3f5a547ed78d6. 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/cd4492a9-fc19-4a35-aa35-abef51969795.json and https://artists.proofprofile.net/proofs/artist/cd4492a9-fc19-4a35-aa35-abef51969795.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 0x64a99d766d801af9a24d490f69771e903633cfa0d974cab4eadd5d1e49e77de9. 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/GBAHS2300908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33b3e9faee51b2490a42bc18163def9c3bc4b7655bcaebb66e83077eb901a7d. 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/GBMVH2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd286c71929e1a64b9c8d2e95613ece209098984e6ee4bb29b3a62803f4a207. 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/GBBPW1900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdc7fad55491217f2d2d36e8f357351853cb2bd3fd3175308086a103bd681c3. 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/GBBPW1900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61f58ee0a72a8f729fe7e3758291ab2acf42a407d77377107b74643fb6337f5. 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/GBUM72005786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e031b884d437d5c986dc7885d3f62ddc95409928753862b6cf6bc056c0af85. 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/GBX722300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ceab0994b28c6809e8b7a1ed606240963aa718712fd6278cff92e13ab3caff. 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/QM6N22282695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd6fc311188373684ff8afa080f1fd3c25d990dd708b7efd6da6dabd31923d1. 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/USRC12300951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe945a1251999c33e4a382b1ac705900ddfd353b18bdbeb4917b4cd4c5fd14a1f. 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/GBAHT2100810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfd36b215b2578e98e68cde9c5cf3c0fed86be8e95de41ed1d6449f013b3134. 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/GBMEF1901204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db5d5b5a939fee4573bbfad495f1e9ce9b7db58fb160bed034f4db864cb9fc1. 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/QMFME1924102.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a99d766d801af9a24d490f69771e903633cfa0d974cab4eadd5d1e49e77de9. 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/GBAHS2300908.