thumb|200px|right|Keitaro Harada, Conductor Keitaro Harada (, born February 26, 1985) is a Japanese conductor and music and artistic director of Savannah Philharmonic, Permanent Conductor of the Tokyo
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 0x95726ad3d1973b0759570f6d0eb09851cecb384a832d5096c36f8b987eb7f5eb. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18166fbc-0072-4e85-b1ee-ff51272e135a.json and https://artists.proofprofile.net/proofs/artist/18166fbc-0072-4e85-b1ee-ff51272e135a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Takashi Yoshimatsu: Symphony No. 3 / Tarkus
Kamui-Chikap Symphony Op. 40 / Chikap Op. 14a
Kamui-Chikap Symphony, Op. 40: II. Water
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 0xe046e2e33dfc662d8f1466b6a3bb3d2e9674f0362e23e4b69b5bc12f02e1231b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPCO02229050.
Kamui-Chikap Symphony, Op. 40: V. Rainbow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6ba678c5b754aa367adb1563002a92de3bb0676d106b1636318acde0f427a1. 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/JPCO02229080.
Kamui-Chikap Symphony, Op. 40: I. Ground
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9dcc2f9a0a8656ccc11d987e2eeebc374b3d4a215562251b2d18fe50c533dc. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/JPCO02229040.
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
Kamui-Chikap Symphony, Op. 40: III. Fire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66b3e7c747c87ec4067b96d169d07faf3444d3c01b5e4fdad2c9148bd4154c. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPCO02229060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc34acd748d6c19784793a38162a064a7e4076c64cc3e0b95a052f9c47e8715. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/JPCO02229070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd930178dda87ee60e073e950f5bf4744842f546913fb52f1d6ae41ad60f7048d. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/JPCO02229090.
上原彩子 チャイコフスキー&ラフマニノフ2大ピアノ協奏曲ライヴ
Aconcagua: Piazzolla, Falla, Ginastera & Guarnieri
Danzón: Copland, Bernstein, Walker, Piazzolla & Márquez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5a737f917f37c9bc489bc7f81fe03218500e9bddb9a6d3cb718422c417a278. 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/JPCO02109290.
Takashi Yoshimatsu: Cello Concerto, Op. 91 "Centaurus Unit" / 4 Little Dream Songs
Cello Concerto, Op. 91 "Centaurus Unit": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88670cbb49a717c5773978338751940dc2de7e8cfbe8f3f93bab811cfe2b91d6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPCO02400990.
Cello Concerto, Op. 91 "Centaurus Unit": II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9ee3197f3b14c6c1b0cbd11e66dce309c256b718522a5e150d9da520d52908. 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/JPCO02401000.
Cello Concerto, Op. 91 "Centaurus Unit": III. Allegro Molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30dea62a4b6e21d49de9756ede5dffef9859faa5bff05d3917594c6a660241d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPCO02401010.
4 Little Dream Songs: Spring: Dream Song on May
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31e4f351d716bb554363898d44f632d69c3f830f5efdcfd545f8d4f555fa19c. 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/JPCO02401020.
4 Little Dream Songs: Autumn: Dream Song on November
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41290ab78013ecea3bde7eeb3a830f7e4bf58368034482d51cc3284d8c7784db. 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/JPCO02401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff3b653c921c1df958c81201104e8632d84f8c919d24aa5fa23aaf9919c4ad. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/JPCO02330300.
東京交響楽団 Live from Muza!'' モーツァルト・マチネ 第 40回