1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcc4865e4d097d907cfd780f29e8161142398c83a4999fb59979039c29f295448. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1ac2f53-ba11-4dda-9fe9-55846e734820.json and https://artists.proofprofile.net/proofs/artist/c1ac2f53-ba11-4dda-9fe9-55846e734820.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 → block OTSBitcoinBlock must exist at that height 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 0x4f70bcfbf12b046c1ecdbc43350a395a81f0b964e6ccfe53a36cd5c209b27102. 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/NOFZS1967010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a32808ebd4ae902a86ff19f254d574a94adaf7f3f5a970484d1adaf4de4938. 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/NOFZS1967020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99da935d36724bb3b4c1cbbed5cc59c60ff1dbe3b3e3e6c220820a074a0af786. 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/NOFZS1967040.
Oedipus, King of Thebes, Z 583/2: Music for a While
The Fairy Queen, Z 629: One Charming Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16c2ab0c13131a89eeb4a757c8e43c1fe73896ba35f91b7d3cb307134dbc161. 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/NOFZS1967070.
The Fairy Queen, Z 629: Dance for the Fairies
The Fairy Queen, Z 629: Chaconne: Dance of the Chinese Man and Woman
King Arthur, or The British Worthy, Z 628: What Power are Thou?
Pausanias, the Betrayer of his Country, Z 585/1: Sweeter Than Roses
Come, ye Sons of Art, Away (Birthday Ode for Queen Mary), Z 323/5: Strike the Viol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fca3c375fe37c266332cad2b605d42c91b833b175fa5be378994024d0da6c9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOFZS1967170.
Timon of Athens, Z 632: Love in their Little Veins Inspires
Timon of Athens, Z 632: Come All, Come All to Me
The Indian Queen, Z 630: Hornpipe I & II
Dido and Aeneas, Z 626: When I am Laid in Earth
King Arthur, or The British Worthy, Z 628: Chaconne
King Arthur, or The British Worthy, Z 628: Fairest Isle
Fiori musicali: Toccata per le levatione
6 Violin Sonatas, Op. 4: VI. La vinciolina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba76b7ab6fe4123bebf5d588096c8c8b760ccbc043e6293e715d2ac8cdb99a4. 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/NOEHX2117060.
12 Sonatas, Op. 16: Sonata Prima: I. Allego (excerpt) [Cadenza by Astrid Kirschner]
Canzonetta spirituale sopra alla nanna ‘Hor ch’è tempo di dormire’
Sonate, correnti et arie, Op. 4: No. 26. La Prosperina
Intavolatura di chitarone, Libro 4 (1640): Toccata IX
Cantata spirituale "Queste pungenti spine": I. Prima parte
Cantata spirituale "Queste pungenti spine": II. Seconda parte
Cantata spirituale "Queste pungenti spine": III. Terza parte
Cantata spirituale "Queste pungenti spine": IV. Ultima parte