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 0x411ed8943f3c3b75b4bb1e13e9a969bb2ddba086bd4f8e7ea564a6ee64bcb292. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c17ae53c-28a9-4891-b5bf-a01725a1c975.json and https://artists.proofprofile.net/proofs/artist/c17ae53c-28a9-4891-b5bf-a01725a1c975.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No. 1 in C Minor, Op. 68: I. Un poco sostenuto – Allegro - Live at Kissei Bunka Hall, Matsumoto / 2024
Brahms: Symphonies Nos. 1 & 2 / Strauss: Don Juan (Live at Seiji Ozawa Matsumoto Festival / 2024)
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 0x442fcfebe9c04e5e2d6fd9f2c276db8eb882734231c60f630762dd6b917911d6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPPO02405526.
Symphony No. 1 in C Minor, Op. 68: II. Andante sostenuto - Live at Kissei Bunka Hall, Matsumoto / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5c9aff2ce15a4c5eba9d7dc6e09e3a8b092ae254d53c0722811213c4ebb9a8. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/JPPO02405527.
Symphony No. 1 in C Minor, Op. 68: III. Un poco allegretto e grazioso - Live at Kissei Bunka Hall, Matsumoto / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe855b7434c10a36b4157e7b7a077608d0b5d0885dd624ce534c34ec1ba11d68d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPPO02405528.
Don Juan, Op. 20 - Live at Kissei Bunka Hall, Matsumoto / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2da7253e893e6a276f5d1b7fb792c6ed5e9a4c4103046af827ccbed73bb8f5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPPO02405530.
Symphony No. 2 in D Major, Op. 73: I. Allegro non troppo - Live at Kissei Bunka Hall, Matsumoto / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf12d50ad24578273422d44eaecc4f77fc38ddfac08cd553272639fcfe821e3. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPPO02405531.
Symphony No. 2 in D Major, Op. 73: II. Adagio non troppo - Live at Kissei Bunka Hall, Matsumoto / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cd2134503f539042d1261b62eaffbec592e2056e58b7775ba2391d475ab61d. 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/JPPO02405532.
Symphony No. 2 in D Major, Op. 73: III. Allegretto grazioso (quasi andantino) - Live at Kissei Bunka Hall, Matsumoto / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59136cd40e576e9e231e2a8cb5212dd09affc33b0d8316b53aad7c2de61ab12. 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/JPPO02405533.
Symphony No. 2 in D Major, Op. 73: IV. Allegro con spirito - Live at Kissei Bunka Hall, Matsumoto / 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90694e50bab58d0de86c65aeecffbbc0d16b41a51873ebba73f529117a4a6cd2. 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/JPPO02405534.