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 0xeb5c908867806a481b8e08c9277b0080734a1a8555cd62e9a71edeee2dad54ae. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3813367c-99c6-4755-935a-817bd0e79dfd.json and https://artists.proofprofile.net/proofs/artist/3813367c-99c6-4755-935a-817bd0e79dfd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Changes (feat. Gabriele Mirabassi, Olivia Trummer, Luca Bulgarelli)
My Cherie Amour (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci, Nico Gori)
We Wonder (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci)
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 0xd848bac6039c306e91dca7ab56c1569a142547afeb1042454e489ebda5bf66e7. 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/ITH1M2200055.
Another Star (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci, Nico Gori)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61122ed3c813c575bfedf4607dc51d1451d25c2ca4603e70d23ca2140263f681. 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/ITH1M2200056.
Overjoyed (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71aaf3817fa3931eee22553c7dc6730318d19900f4df1b084e78d98ae73346c. 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/ITH1M2200052.
Isn't She Lovely (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd97324fb9790925ad1d9c703753adc99abb58ba6c93b5fff367b5d11e3169f. 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/ITH1M2200060.
WE4 (feat. Jacopo Ferrazza, Julian Oliver Mazzariello, Nicola Angelucci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f6647be0de1ccf5e84420b5c8ee3f8e0293cd9abc7cf5b01ddf9ef527591d. 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/ITH1M2000012.
I Wish (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9064f6c5a9425247267795a1c06b3ed2dca5eff241dc80c9ef5abf3f4c67c1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITH1M2200053.
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
Moon Blue (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2da4d3aa811bf43b7d36a5bac3f681f7b2f31f594769abc0df5bc6dce1a4a8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITH1M2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8455bd089c7f3a5e0d301c17d5ab6f464c11f238f50c8904a67494c03971363. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ITH1M2200057.
Visions (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4e6d075afdec6d865f25cb4a47c210aad6034c06049d2c69c5e1a06710516e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ITH1M2200058.
Sir Duke (feat. Julian Oliver Mazzariello, Jacopo Ferrazza, Nicola Angelucci, Nico Gori)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e4f4b474e7a384d4599d18055d12b18de01aa66414d4684ec611108fa8c38c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITH1M2200059.
Estudio misterioso (feat. Jacopo Ferrazza, Julian Oliver Mazzariello, Nicola Angelucci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0115c385f6d5d731b898b986229415418c9f483f1da637e72690fbd06a139cf. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ITH1M2000013.
Bakarak (feat. Jacopo Ferrazza, Julian Oliver Mazzariello, Nicola Angelucci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3799ce500a56d151bf1aabbe5afa15fdd6a3bd8945cfeeb00ff7604d82062c0f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITH1M2000014.