Keiju (written: 啓珠 or 桂樹) is a masculine Japanese given name. Notable people with the name include: (born 1971), Japanese footballer (1923–2010), Japanese actor (born 2006), Japanese singer Categ
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 0x50a05ded2e1e83c2c42c54021c023962d61bca47bb403541e61c607c21050006. 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/fc29ff89-89f4-4385-ac80-4668615c79e1.json and https://artists.proofprofile.net/proofs/artist/fc29ff89-89f4-4385-ac80-4668615c79e1.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 0x2460666475865e165be46f70bbdf4c96c73ccf4b263da352d6cdc270a91ca744. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCJPA2432716.
Rusty Knife (feat. Tiji Jojo, T-Pablow, KEIJU & IO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458c9587e62bfa911c216fc7ed7db374d43fd01271c01246294e2a0eadf304f9. 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/TCJPN2184461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27685bde59a655bb526d9b7ed45dbe042591ede203747c0bbf1bc4b142c2b21. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPWP02202167.
You Came Back (feat. KEIJU, IO, Holly Q & Gottz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210f54bf6953a77fa7946dff80e73414d1eca6964891e4ac6feaf29d4afcdf93. 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/JPWP02202168.
I Am (feat. IO, DONY JOINT, Gottz, Holly Q & KEIJU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8aecb110f7cb049f3df2e2fd5a18fc970cebd1636d822b94d12c4d1fb56853. 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/JPWP02202169.
Day N Night (feat. G-k.i.d, guca owl & KEIJU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbb483a98d6fc882c4239155c8546b9fe7f11e6b36a93d0f8c4bb5d3a1feb3d. 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/JPWP02400204.
PROGRESS (feat. Gottz, MUD, KEIJU & DONY JOINT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d368c3a259ae013383dfcdd3ef2335be1f358270ba3bf1a62c3ed959b8e82a3. 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/JPWP02202170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696e24eabb49799be00f1ef3dfeb87c87944ed58fcf4c0e7f9330941d4c9367f. 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/JPWP02202171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cec320ddc46e33a801ce89ee6c93c09437c2ae0a82ad7d4297a52cd7b47510f. 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/JPWP02271451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b352b23cc06dd96771d012c32cdd4a341373323b2756e5b9afdae97c69ae2cb. 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/JPWP02271455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bbd5f000e8d487eb02a7823b462df77d50fda5d05ebe6f2b6b736b10642189. 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/JPWP02202180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3dca0ff7f82048fe211f88ae1a147ac7f03febf385f30ac0cf7f5054c2370. 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/TCJPI1953561.
Too Bad Day But... (Remix) - Sped Up Version
Jesus Loves You (Sped Up Version+Live Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e6c8ca1157f73c3f244f81d1131ff6a0c14658f3dc0d4bfa6a8b0d7256cfb0. 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/JPTF02313404.
Too Bad Day But... (Remix) - Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643d3f25ad59b8149036423f4b2004264407bee11cfc8e3e4e9314d943c9d731. 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/JPTF02313405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb179d2b732e22c99985fab62c80b643568bd547404d74dd693094c086dff67d. 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/JPU902303777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b88e5bcb338f09dd1a16a97cce0edfbae99516b4c1a2138dfe143fb3795cec. 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/JPU902303778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7babf57187e5e5c52b96f48dfefc1fa7e0c140ca9edcfe7368a05f84cfa0d65. 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/JPU902303779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd5c1b082442ac5886f3d9266f1a252aedf4128fd30eb4f238919457ea3e7f5. 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/JPU902303780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b556c7bcf38f82c9178f157d2f822f7669886b224adf2ff140639ffc74cfc97. 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/JPU902303781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3958a4ed5441445b38408643c2101365b329a8d9e4122996ebc73b424af531bf. 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/JPU902303782.