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 0xc03caf33dcc97bc9a95535c2326544166931e909317365801932709881085041. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8244ddec-7260-49a0-87f4-ca8910cf4538.json and https://artists.proofprofile.net/proofs/artist/8244ddec-7260-49a0-87f4-ca8910cf4538.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Corelli: Concerti grossi, Op. 6 Nos. 1, 3, 4 & 8-10
Concerto grosso in D Major, Op. 6 No. 4 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): I. Adagio - 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 0x64c0798d1d6094540eeadfc3880aae663036a4f18ea654b5f7457721aa0f4f1e. 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/ITCC53001296.
Concerto grosso in D Major, Op. 6 No. 4 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd135c3f83f7d03d5ea4b921851de09113c3474647931410094b11bf7d972052. 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/ITCC53001297.
Concerto grosso in D Major, Op. 6 No. 4 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): III. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f7ca1b331449cecda987479abc7153ee92fd6820428d47670be0e730b59581. 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/ITCC53001298.
Concerto grosso in D Major, Op. 6 No. 1 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5a7642a4c219c35bcfe4132ce95188b58c17c147f36eef42920463ec857b32. 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/ITCC53001303.
Concerto grosso in F Major, Op. 6 No. 9 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): I. Preludio. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4cd452853c023641541abf20d74f14b7c20ba57549bd48ac46bb3c55600476. 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/ITCC53001305.
Concerto grosso in F Major, Op. 6 No. 9 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): V. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc777ebb2084562b61084c8d5aa8385bcd756b38334e9f1a439be4023d4097abe. 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/ITCC53001309.
Concerto grosso in C Minor, Op. 6 No. 3 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d341f47f8795fcf486bb934fb4b93160cb2f7ad28c3688df3f5ea0619abc33. 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/ITCC53001312.
Concerto grosso in C Minor, Op. 6 No. 3 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): III. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4bce62fc910c93e9ccfbd97efd9b647c02033aa40dfefcfb8d41ed84998000. 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/ITCC53001313.
Concerto grosso in C Major, Op. 6 No. 10 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): III. Adagio - IV. Corrente. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008831acc1ca19cdcf76033fe71333f4befc59bc0b0ae7149a6accc3728860e8. 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/ITCC53001318.
Concerto grosso in C Major, Op. 6 No. 10 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f1b3a40fa34a5687d7503c9b0534f755246a3e84e7635a29f3922292691abe. 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/ITCC53001319.
Concerto grosso in G Major, Op. 6 No. 8 "Fatto per la notte di Natale" (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): V. Allegro - Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc36a899565969ee87390804cd8a875f56eb68bb2daaeebd1b4df3fedd2b793a. 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/ITCC53001324.
Concerto grosso in D Major, Op. 6 No. 4 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfb6590d159ff431e383466e74e07c2397ec8b8f14372979d2b18c480e2cce1. 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/ITCC53001299.
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
Concerto grosso in D Major, Op. 6 No. 1 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): I. Largo - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6dea9385bd2cc2ee6d0f8cbe2dbcde673d8ff6179a0d61f8e0ec6213eba1e5. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ITCC53001300.
Concerto grosso in D Major, Op. 6 No. 1 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): II. Largo - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fad2963f42f49c3923374366931ec270a3296709ecdc1fbc5da8bf4a3a331a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ITCC53001301.
Concerto grosso in D Major, Op. 6 No. 1 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ede4b99c15c105a52aed62791793809dbdc593d00c33c6e79f0ed1dd1f5d493. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITCC53001302.
Concerto grosso in D Major, Op. 6 No. 1 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4a1bc13ced3d1b30f9ff67f877a066195fadfd309e6b3f83993e7288332703. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ITCC53001304.
Concerto grosso in F Major, Op. 6 No. 9 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): II. Allemanda. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10381edce340bf58a8800bbf3d302d4406be7e0feaec8c24ea1288785b60038. 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/ITCC53001306.
Concerto grosso in F Major, Op. 6 No. 9 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): III. Corrente. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdc364f9e6ed21a2cfc496a98a95d46ad5a7d6f0fc14d42849a799926ba25f2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITCC53001307.
Concerto grosso in F Major, Op. 6 No. 9 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): IV. Gavotta. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6df6e92fe0e5fe0b919877ff8e3758ac474d585545526bc1993335b05c47b8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ITCC53001308.
Concerto grosso in F Major, Op. 6 No. 9 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): VI. Minuetto. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352e8bbff4248e569bfccb0c78211b1eda452afb3655abca71a439858202baf4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITCC53001310.
Concerto grosso in C Minor, Op. 6 No. 3 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2579b2295af4e28c19131e5215811039be12b9e967af8c0920448458231b5d84. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITCC53001311.
Concerto grosso in C Minor, Op. 6 No. 3 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): IV. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca17719c0b9c61c93269b64fd3c7899a7a9dfc768904dbc3fd861b0b16f94392. 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/ITCC53001314.
Concerto grosso in C Minor, Op. 6 No. 3 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc17f3710d052d9db26813f85e59d3a182c69646656cb1fb69f9644952fa67ce. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ITCC53001315.
Concerto grosso in C Major, Op. 6 No. 10 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): I. Preludio. Andante largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72ff6efbe8cc7e566b1c9358342a18d37529ce85d285f5fe0277b03d8dff34b. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ITCC53001316.
Concerto grosso in C Major, Op. 6 No. 10 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): II. Allemanda. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402031576ce370f55853977309216ad2d3cf34e74cef3f294b564dd7a7ad5b2d. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/ITCC53001317.
Concerto grosso in C Major, Op. 6 No. 10 (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): VI. Minuetto. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0078a2122bee67c5844c04c6d0b8cc39d7c1fa085c62799715b815f7d161d5. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ITCC53001320.
Concerto grosso in G Major, Op. 6 No. 8 "Fatto per la notte di Natale" (Arr. G.B. Columbro for 2 Traversos, Cello & Orchestra): I. Vivace - II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9ad85b85c17a54c0139749bdc0ef732c453a31563eab923fd752c745ec40b4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ITCC53001321.
Zuccari: Mass in C Minor & Magnificat in F Major