Julietta is an opera by Bohuslav Martinů, who also wrote the libretto, in French, based on the play Juliette ou la Clé des songes (Juliette, or The Key of Dreams) by the French author Georges Neveux.
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b93fcc13248091df6bacd9065022e442bdee1740227359d0ae3323db0fff0e. 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/eb1ee023-f0b5-48a3-9570-da0b23313457.json and https://artists.proofprofile.net/proofs/artist/eb1ee023-f0b5-48a3-9570-da0b23313457.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stripes + Squares - Penguin Prison Remix
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18929821fb7589849fb852125b4204713f8a49eef5b77624990f4d24591887d4. 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/USLGZ1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fa5072dde504ec44a929fed0724fbbaacbaaeeabbb9c8965521382e75f5715. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLGZ1700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fdfed12d677f1f34e4de0ded962b7cd6bceb5502c4a455541806a45eb785ed. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/USLGZ1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d73457fac61bc28f549f3eec7d5e015ad7913778ada6b64deaa0291631cece6. 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/USLGZ1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e029cd3921d6eb5715a8c5e0a8d2804119553e3364c765533d84f714c5c74. 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/USLGZ1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0152a32a06fdd1b78dfa310db836d257a770baf6fe656dec222405e00a138478. 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/USLGZ1700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd75ac7074e23320bbd63b9285ceb7a18c466321fa59bc880c0f929bb727c3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USLGZ1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55eba4809fa738a5b5da055b4dedf569bcb29c05fcd32b327bdce8c5dec85db. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLGZ1700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8738a1fe78b6a8ad1a037992828aed6a15b87fc570a2747160fc3df2fb6f5e78. 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/QZWFM2333044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a50ad4cd0248dc711e3548c1fb1c5d3272ce50b94a565dd64e170b4974cacbb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRU452200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad71fb825cd476d279494f0d0120193031d3dd895064064481b2b4ff9be65367. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRU452200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1204b9b4d32d22d2745dbf7f67fa058d0c8e366cf5e82e8b3b11e17276cf8a38. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRU452200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d050051228dafbc92118352436d7fabee5455329813a955f6809a215186b5c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZAKB2172607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e213e6a5ee195baa8d72abfa2789ebded83d495f102f92a0595d62621c1176. 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/QZDA62128460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2452a9585135a974726aa0f3430658d8ec41281d0ad8ec85531c991cb71462. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRR642400757.
Run, Run - French 79 Remix Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69bbbb89e9cf966726dd6adb064e56e156ed622364ab20207f1b823a0c66683. 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/FRR642400758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad71fb825cd476d279494f0d0120193031d3dd895064064481b2b4ff9be65367. 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/FRU452200010.