thumb|upright| Alexander Malta (28 September 1938 as Alexander Lagger – 23 August 2016"Kaviraj (Kavi)" (obituary) by Anand Deepti 10 November 2016, Osho News, retrieved 3 January 2019.) was a Swiss op
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 0x959dae5dd54d7fd909197733700b7760df713e0c12e564a68f04ea5b7f850b77. 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/e075b044-0fd1-4d45-95a8-95810489ef93.json and https://artists.proofprofile.net/proofs/artist/e075b044-0fd1-4d45-95a8-95810489ef93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don Giovanni, K. 527, Act I: No. 5, Giovinette, che fate all'amore
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 0x977822c89c465a2a8553c139f5b3085ff2bcefcc16246ff7eaaad37b29b476b1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF058530404.
Don Giovanni, K. 527, Act I: Recit. Manco male, è partita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636597e28b8bd67f9d296b9f39452ad9f8f1ed7bc25eb2fdf1444b120b23f38e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF058530426.
Don Giovanni, K. 527, Act I: No. 6, Ho capito, signor sì
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1523e97f311966f4c385d55b0c8f7ad287a93b7307cbdebe491737de1f8a26f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF058530427.
Don Giovanni, K. 527, Act I: No. 13, Finale: f-j. Riposate, vezzose ragazze... Trema, o scellerato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ce6c685b0aa968d5d59da18d01e52b341eebf8e85d7fdfef48f8d9a488ab61. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEF058530444.
Don Giovanni, K. 527, Act I: Recit. Masetto, senti un po'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918427605575a0cffea21f2dcd830f57c005727f48cef65a7aeee443ee852289. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530438.
Don Giovanni, K. 527, Act I: No. 13, Finale: a. Presto, presto, pria ch'ei venga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf94bac5efe320baa67e67c765e5f7b0605f0c9ae6707ca1b60b3c8bbc2e7012. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530440.
Don Giovanni, K. 527, Act I: No. 13, Finale: c. Tra quest' arbori celata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d5bd7eca12c32c35584135cca23a96ff2ff17a0c1b610820fd61e19bc498ee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530442.
Don Giovanni, K. 527, Act I: Recit. Guarda un po' come seppe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94ba73e4b7fead85a1a08beeb12c22895e19c72e4e044ea82dc7e147d5c1bdb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530439.
Don Giovanni, K. 527, Act II: No. 19, Sola, sola in buio loco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976945d0150d151708f4e67d100634bb5e7d7fe4b433aded2c3ba8528d16b580. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530454.
Don Giovanni, K. 527, Act II: Recit. Non ci stanchiamo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2fadde5315440ff6131492c510a2f3307466a74378899ec8d10b0d55830924. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEF058530449.
Don Giovanni, K. 527, Act II: Recit. Zitto! Lascia ch'io senta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5853825041034ae06304a34c3e9dee343da5dbbcbff972fb4144bfa7116ea612. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530451.
Don Giovanni, K. 527, Act II: Recit. Ahi, ahi! La testa mia!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da5df59cfb715b6de4742ea25b28ae25e20e0a366e20b05f91d97e9f1064341. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEF058530452.