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 0x5296d570abeb308db85d21fb96b6c337ef0235e8e76a48095d1ed3e9bca3b35a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79e481e3-b45d-434a-a357-c4c0193e1fc0.json and https://artists.proofprofile.net/proofs/artist/79e481e3-b45d-434a-a357-c4c0193e1fc0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Corelli Concerto Grosso No. 9 Op. 6: 1-6
Corelli: Concerto Grosso No. 7, Op. 6: 1-6
Corelli Concerto Grosso No. 12 Op. 6: 1-5
Corelli Concerto Grosso No. 10 Op. 6: 1-6
Corelli Concerto Grosso No. 11 Op. 6: 1-6
Corelli: Concerto Grosso No. 6, Op. 6: 1-5
Corelli: Concerto Grosso No. 5, Op. 6: 1-4
Corelli: Concerto Grosso No. 8, Op. 6: 1-6
Concerti da chiesa, Op. 6, No. 8 in G Minor: II. Allegro
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 0x549401d9b824fac03ab03c8c04f5937c5ec763ce2455b8fbbdea8bfe669de918. 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/USA561092081.
Concerti da chiesa, Op. 6, No. 8 in G Minor: V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60009baff2b7d61f160bd25843b87419bbff5cad14473513ccc7c41c8e9c5b6a. 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/USA561092084.
Concerti da chiesa, Op. 6, No. 8 in G Minor: VI.Pastorale: Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56630c2497dd19c03d7ab82180a71c65a9a620afcb2f2d01c2ebd5f7826baf88. 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/USA561092085.
Concerti da chiesa, Op. 6, No. 8 in G Minor: I. Vivace - Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc296d9c6c4794881ad787d9f2a3fae9fb6b54657f2574ddc84ab31245f2ad4bf. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA561092080.
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
Concerti da chiesa, Op. 6, No. 8 in G Minor: III. Adagio- Allegro- Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae86ff5f05d0b489cc4dc0211140fbf3d05e2e762fb1d695bf51544d9b79dd18. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USA561092082.
Concerti da chiesa, Op. 6, No. 8 in G Minor: IV. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473707d2dd0cbef373faddcb2e22034d11310a455a89deb6410f9b9d292cc77f. 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/USA561092083.
50 Essential Classical Pieces by the Chamber Orchestra of the Moscow Conservatory