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 0x8ae8d291d38f16a09d9124bb08d91789b6d3a18904808c952107f29d0a83a843. 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/883c8098-7c5a-4f08-a72c-82df87c76437.json and https://artists.proofprofile.net/proofs/artist/883c8098-7c5a-4f08-a72c-82df87c76437.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Telemann, Vivaldi, Marcello: Oboe & Recorder Concertos
Oboe Concerto in E Minor, TWV 51:e1: I. Andante
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 0xecf129e2cfb9f6704b5551726aadf4e19edcaaae7267854d160675b4936e4790. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:55:32Z), 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/CZA169101203.
Oboe Concerto in E Minor, TWV 51:e1: II. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399d5c313e371f30ce18d3c6eb61391e85fc6d0d457e884fadda002498ca1b1. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:47:51Z), 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/CZA169102203.
Oboe Concerto in E Minor, TWV 51:e1: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e0bd7d91c57ff9397cf48a5fa22e026898491feea208fcd60eebeb4fa852ae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZA169103203.
Oboe Concerto in E Minor, TWV 51:e1: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa227a5d69fedfbcc423872f78b4755a30772f2e9968b757030d11c0210157fe6. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/CZA169104203.
Concerto di camera in G Minor, TWV 43:g3: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd7897e3895bab275551614dd366c898f098d6a1459f129ea09515ee2ed665. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZA169101207.
Concerto di camera in G Minor, TWV 43:g3: III. Bourrée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c635dea65aef1011a05e004cd2b7cd905725626d7537bcd6cd300b6b0bfca71. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZA169103207.
Concerto di camera in G Minor, TWV 43:g3: IV. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f01e8044e5a57cfde7e6e7f7801dccdd1080fab57d5f21c6b8f47fa6e627ed. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZA169104207.
Oboe Concerto in C Major, RV 447: I. Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249fb3f5f01f5d2462bf1fd6624018fdf6e03fe5756867317ecedf23937181bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CZA169101206.
Oboe Concerto in C Major, RV 447: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae08fb238962d77dd75e82d778860b9135675695546fa5f8df2a63470de81cc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CZA169102206.
Oboe Concerto in C Major, RV 447: III. Minuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9577f18443ebe505c4eaf2221f128773c80d2a195a611e66824519fd6e4db91f. 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/CZA169103206.
Recorder Concerto in F Major, RV 442: II. Largo e cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247ad7ef0aa28991fb51852e089f079ffbe2b3ea6098f586a5b547f91ff8154d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZA169102201.
Telemann, Vivaldi, Marcello : Oboe and Recorder Concertos
Oboe Concerto in D Minor, BWV 1059R: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30eaf9e0caae9345b337433cc0e4616bbaaa458a85584157f7a7be407406279. 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/CZA169402076.
Oboe Concerto in D Minor, BWV 1059R: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491e63831f42f3094265d462a9018b9e64b15394174617a8b4d3993fb0e97d6f. 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/CZA169403076.
Oboe Concerto In D Minor, Op. 8, No. 9, RV 454: I. Allegro - Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e0f245c207796f99f177edb6462daa2583c7fba3c2cf0934ca34b81919ab94. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/HKI199329804.
Concerto for Oboe and Violin in B-Flat Major, RV 548: Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff8c5a81fa4b8e57f92d37c3c9d2c83c5632385d2cdb0250dd40a28749f40bf. 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/HKI199262819.
Oboe Concerto In D Minor, Op. 8, No. 9, RV 454: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac57c67624ed3fe027c2f6c73d01a3b32d8fdf0e749c24ef23dc9d75a7825881. 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/HKI199329805.
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
Oboe Concerto In D Minor, Op. 8, No. 9, RV 454: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6942c392b4d2cd83ddfe9506f6acee5bedd8674c939fdd38e2403e566acd3f. 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/HKI199329806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40964aa024e4a2d44e7632aa60bb0fae5355a7b68300696f28144c370a53825. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CZD231720101.