is a Japanese conductor. Biography Otaka was born in Kamakura, Japan on November 8, 1947. He studied composition, theory, and French horn, at the Toho Gakuen School of Music in Chōfu. He was subseq
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 0x373d65799a989160db0ba3765d7d67969bf729c1a9e0722590655fa92d13c829. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5c30ada-da46-4d03-8f45-94155d7cc405.json and https://artists.proofprofile.net/proofs/artist/a5c30ada-da46-4d03-8f45-94155d7cc405.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tchaikovsky & Prokofiev: Romeo and Juliet
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 0x8c997b960f61e32cece639a21edef2c7a62b46101e1aceb56bdd66e60d89ab6a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAJU8500018.
The Wand of Youth, Suite No. 2, Op. 1b: No. 3, Moths and Butterflies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db776e3e432b3656afa2556ee47d70853d9dd6f30dd6a2da74ddb12cbbf132c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJU8800243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec914267401ae77cf1fbee2d4066ab27c88f7d139472c2f6da0377634e690d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAJU8800287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953e9c24b5b6284950d6ff2be26cac141b01e6c5922ac06c2862d5929950abcb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJU9000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3d64ce8f6fc885ed37f865e4a3f5f4ee6caa5483a75ec1cd887d61a6d0c5f8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAJU8300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9535d3ab4b53d86c10a3912f8dc1b8822afbc46d8a04bb8de10dd9fc09594cd3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAJU9100061.
Suite from Henry V: No. 4, Touch Her Soft Lips And Part
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c0a5894f894324b4e0620328bef6097affa4df8ae243009670606a2bc0d577. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAJU9100038.
Études-Tableaux, Op. 39: No. 2, The Sea And Seagulls
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd057bcef5e41f5741cd37a5a2426e6a0ec0e8bc80d16dca484de055104cfdbc3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAJU9200005.
String Symphony No.2 in D Major, MWV N 2: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c32994a48e329d61073a0701d6c4fb4699d216e812c4c61de98e07849161c4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAJU8800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64ed8cdd5c42f8dc355e7426c0a9599c8579ba0358f82a312557610d6c44fb9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAJU9100019.
Symphony In E-Flat Major for Double Orchestra, Op. 18, No. 1: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f862d6fc8cd673a177d9614f701536da5b9fa75e900fa1670b1fc3c18792f08. 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/GBAJU9200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8d458565a386339580133a5eb5a343378a50b778bf274690b699f861bac0c4. 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/GBAJU9200308.
Romeo & Juliet Ballet Suite, Op. 64: Romeo & Juliet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdd6364dbcd74d5c56a4484753d37384cdd69ffbf5823f5616b232b0c2d4f69. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAJU9100150.
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