Iruka may refer to: Makasete Iruka!, an independent original video animation made by Akitaro Daichi Lake Iruka, a reservoir located near the Meiji Mura the Japanese word for dolphin (イルカ) People
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 0xa00a6729d609c311cb45645bee7685d4cae34ce9121110133f16b090b01e4ec8. 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/ea5a5ff3-2a90-4d29-8133-de048dfc3846.json and https://artists.proofprofile.net/proofs/artist/ea5a5ff3-2a90-4d29-8133-de048dfc3846.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 0x0cc836b202dc9da08bb793aad0fe0d5cb1305ba2c1cd25c9d624d1dfbed81fe8. 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/JPCR00201770.
イルカ アーカイブ Vol.1 「イルカの世界」「夢の人」「幻のイルカ・ライヴ パート1 & 幻のスタジオテイク1」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4471d4735aa894d6158059941cf92e3ce04f46ff86eaf36c3401fc810b2110e5. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/JPCR07400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4751c108c294988e144c0df8d699b0b98f2a41967812662ecf871c8f5e82421. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPCR07503720.
イルカ アーカイブ Vol.2 「イルカ・ライヴ」「植物誌」「幻のイルカ・ライヴ パート2 & 幻のスタジオテイク2」
イルカ アーカイブ Vol.3 「我が心の友へ」「FOLLOW ME」「セレクション 1980-1983」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bad91e8b75b3bf63e5c8e969806fad434e8a0b3c4a1821955c60fe96c595e6. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPCR08000610.
イルカ アーカイブ Vol.5 「いつか冷たい雨が」「あしたの君へ」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edf8ad51fe8dc508acb502f02383d592aa5e84bb378bb1884948db933cfff5a. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/JPCR07900280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4471d4735aa894d6158059941cf92e3ce04f46ff86eaf36c3401fc810b2110e5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/JPCR07400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46b0b280642d8849177a4f5b14f1366ce57d7cedcd28c9b984ac1d5a51f0131. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/JPCR08000570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4751c108c294988e144c0df8d699b0b98f2a41967812662ecf871c8f5e82421. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JPCR07503720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fe83eabf0ad23c60a1acc3b469259d4eb5ae11316f6a582d1f20ed3f3caf32. 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/JPCR07501300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bad91e8b75b3bf63e5c8e969806fad434e8a0b3c4a1821955c60fe96c595e6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPCR08000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ee3bd0324dd95309cdae3ef54acd2683b75c248f54a10fc501b48783d7dd6c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPCR07603780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d863ed923f8485fe96363e05d416be70dcc73619e2d444ac77cd43b537e5d1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/JPCR08100900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c15b030ff4093646b1c8f8a882cdeaf428008eb945b530b8bc12ba73081b80. 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/JPCR07703640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae66df73dd2479c8dbcfd124db8113936351cb0b4d61479a976cd4255042e341. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPCR09002410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7970eeaf1faac1242749c51d047b912243721e321efed3bdfdaf0a4c93b353. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPCR00604100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b166981d9d1521e84b27702db6722b869d7920715d13f4da660636924dc601. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPCR07900750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571b9431683a5211c214d8c0989d4a2077f5db9105f9d62b81cdf7b0ecdac506. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPCR02104600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f3e6ffba1b9dbe4ab76db867c88d1bcf2d3527aceeafd2e315e241a73e21bc. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPCR02104640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bb57dd2cdefe88007a21e5e7783ba9fd2b7f8cb6dcc1eb8cc0093a2589103c. 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/JPCR02202180.
イルカ アーカイブVol.8 「JULIA」「LOOP CHILD」「Heart Land」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95892184383a5fc61bdeaea1c65c2e9f70870f8f7af1ecbf73db83459ac5048. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPCR09100970.
イルカ アーカイブVol.9 「ESSAY」「けさらん ぱさらん」「Delfina」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ad28cb052d686809412e93c301462a9bb24f962fb1d40afcf6f6055e5d7bc. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPCR02504560.
天翔けるJOSHIBIちゃん ～ダンスバージョン～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f203e7d274b6cdb5a592e57d6af53e6aebf477db542a6d983734897238fa6aa. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/JPCR02504900.