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 0xe55dc95370d9a891d09d5355a35a09c480ebb76d945643605436b31ed98ebdb9. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/117af87e-b592-4968-bb79-645811f86b65.json and https://artists.proofprofile.net/proofs/artist/117af87e-b592-4968-bb79-645811f86b65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zavateri: Concerti da Chiesa e da Camera
Concerto da Chiesa e da Camera, Op. 1 No. 7, "Tempesta di mare": I. Allegro e con spirito - Adagio
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 0x018f95ec9e294b99a5fdbe4890e4ac66efb54122ae18fe01bef3bd3da3ba1ec8. 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/DEE471600575.
Concerto da Chiesa e da Camera, Op. 1 No. 7, "Tempesta di mare": III. Allegro ma aperto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fb2e6df774e27b056faa14ba48b426d2a192ef835f261339455d056df4f765. 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/DEE471600577.
Introducione in G Major for Strings & Continuo, Op. 1: I. Largo e spicco – Allegro assai – Largo e spicco – Allegro assai – Largo e spicco – Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61985b9f72b7bea2f2d2c8103da4ac3bb481152979cbc5087a12f864781483c8. 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/GBLLH2270501.
Introducione in G Major for Strings & Continuo, Op. 1: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0fef79c142968936e8c4ca3f00720a1a4622bba29dcb351b39f175df25220d. 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/GBLLH2270502.
Concerto da Chiesa e da Camera, Op. 1 No. 7, "Tempesta di mare": II. Adagio e piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c9590c0a71f50a24f6cb6e73730c0d6a3094059bd5d496c79f0d76ffa9dc55. 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/DEE471600576.
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