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 0x6f3e87d63ff9d0114ebc8c9837dc7f79da4386665c5e8e3dc79f63992ad5e690. 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/cca613c4-c0fe-4131-91a8-08ec8cd10786.json and https://artists.proofprofile.net/proofs/artist/cca613c4-c0fe-4131-91a8-08ec8cd10786.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 → 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 0x21ad77760e81fd1c7691410724fe7b460c96116f00678592a63c861b62ce88dc. 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/IT0CF1500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba465cbd2185fc7c8d0ff029f1f4ab60a2cdbb05f430297f0c97f8b98074caf. 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/IT0CF1500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ceaf978e2b9402006c60395d48967f7c64551f7fdcbc09a1effef39d37e801. 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/IT0CF1500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bac8a1f9a571a536f0082ac43bb76ae66bcfc302c8d7998ffcbce23d5f99c9. 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/IT0CF1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c8c28d1abe34b31b41405094073e6a81f9defb4986c173379ec4b593f3df2e. 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/IT0CF1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a23b864e8d0d34416df3651ca5261d93a51b5f9cb3a63925bd4f78e282b049. 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/IT0CF1500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c8e4554cd9bc59e26d201155f359a43c1d67d8bfb5cf205a40784a5d2bce94. 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/IT0CF1500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cec512b098d38ea537a6a6c49870ad48004201b10d45ccf2e45c8ff0e51048a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/IT0CF1500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a5577b3098388092f7c3eaf0cd28f4b59facaa04f557bc7d69e87ebf64a8bd. 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/IT0CF1500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fd45d3a4b41e0641fff840374d26ba1b2f9a3a1f60433fbdce3f80bb6a257e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/IT0CF1500114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ebe2a714c1e5b793d6cf004a453ff7b748c801e080d5680ecbba5714c6af9b. 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/IT0CF1500115.
The Low Kiddz (feat. MadMan & Bassi Maestro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446f14ecae7f92916fe43ebf166710ee0aef6a65b7d22a5de8b8346cf4397048. 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/IT0CF1500116.
Nella baraonda (feat. Fratelli Quintale & Nerone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b60c4d5f26637dbc3ae33354691cd35ebe8dceda089fdf6e21bcc1976ff640b. 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/IT0CF1500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf09f200a77211de774f756ea56a01371191cb5b18815844a8bf9566240153d7. 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/IT0CF1500118.
Vecchia mia (feat. MezzoSangue & En?gma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e089f8583e74fff8cb05083208efbbe2a48ac8988995e7be635c338dcfc3edc. 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/IT0CF1500119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf84d26da96c1af82f7db2c65bf03b26b98ebcfc2967c50a1bfb956c5b395782. 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/IT0CF1500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8806586fea58bfa9c41dcc2537f750c887f52093bb9a8def38b1f0c034677b4b. 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/IT0CF1500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061020aef44d92f990017bba2dd648444d4635379a9bfc386b8620b0b83105af. 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/IT0CF1500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be5c027430eef3abfdf32afa8bc5dbb4b0fd5343f3c19494b2f9534f11edc8. 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/IT0CF1500123.
Non mi manca niente (feat. Riky & Debbit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193252b8e097e54a930e977368d9c3a1be20146a305520ffbca356f07bb0ea11. 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/IT0CF1500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0841748c8ee43ddf4cc93ab9a597f6b875c76b9b0350d74de94f660fafe28e. 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/IT0CF1500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ae9b8420e05b08e61064170b1047340a55cc2bb7a167edd543048b9470b5cf. 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/IT0CF1500126.
TESTAMENTO (La resa dei conti) - feat. Low Kidd, J Lord & Shari
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6b653fffaddb4b06c025e2fddbf6f25a2e36dd8d4704e4d6f51b208a78109a. 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/ITB002101208.
MACHETE SATELLITE (feat. Salmo, Taxi B & Greg Willen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e24dc7ac43c171c3f35896abd37d5a92284f725eae790fc49424087cc43f93. 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/ITB002000440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf36d409e5370c8c78553281d9acf040a1a7617bd210fbdc7c30690eb9aa943. 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/ITB002000442.
WEEKEND (feat. Lazza, Madame & Massimo Pericolo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2814826d05398280b5e8492a76c1aae8ab5a48765908f8f6f21e011b125cede2. 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/ITB002000441.
TELEPHONE (feat. Capo Plaza & Sick Luke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7943648367aca10b4f82d1fbc01b898df53f92bc925a1553f1f80fda902e92e. 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/ITB002000445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85b9dc79bfd31890db190fc88b396e15568c88fe913615142c7c26cecc0559a. 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/ITB002000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80c41d4545538adf19e7ccfb11dee8acce7ffb465583fffce5066cad7014661. 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/ITB002000446.
ALASKA (feat. Davido, Hell Raton & Shiva)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61e67ca9c4dbfd27e707468887babcb2f475a24af8508f50300211c904fc11b. 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/ITB002000447.
BLOODY BARS - LOCKED (feat. Jack The Smoker, Sir Prodige & Dani Faiv)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56328aa19124ccb85316ad09b7255a3a3486cdbebbf5a4b5fa5840ff456e9133. 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/ITB002000504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4e3dc522f3e76acd234e49e670435a565bff74926e450bc7e549a5ab31394. 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/ITB002000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668a0d8c9aefd3baa5cb760ed877b2bd31b67e468c57656f0462bfd350062a45. 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/ITB002000502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc4439ab803b5e772f11c4c1829db5608af5ad756f77dc03328f810993b0a17. 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/ITB002000473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30634f40c2dcfc61a6e5feb35d7a8513e31753c053dd82517c51b0f568ed1266. 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/ITB002000449.
5G (feat. Nitro, Fabri Fibra & Jake La Furia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837391345b0bd3e4a56de90c71dbcaeae05e0180ae3b17a213b178f3a993d8bf. 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/ITB002000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d9e59d6e15972d21ab4968f4a3899b5c2c8b50b8099045896e463a35d5a7b0. 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/ITB002000452.
BLOODY BARS - DRILLUMINAZIONE (feat. Charlie KDM, Hell Raton & Lazza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9221c48004db0374dc467183f8eb391cd5ca0894a9f2c67d51e1979cc3bd9903. 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/ITB002000472.