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 0x73dac6e6905a99902d766b51927689a39b6b83d257b941d322bec34852918870. 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/1a07220e-b023-420f-96c0-1089e25ecb1c.json and https://artists.proofprofile.net/proofs/artist/1a07220e-b023-420f-96c0-1089e25ecb1c.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 0xb3c65774e89c1d6a54983709e653853d067a297959f0db2fbb5f553dc6944cfb. 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/ITB551614031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b0b57a1182c3d7178772f3fd47d226db9f7e195f785069ebd4a64075be6439. 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/ITUM71900330.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370e5687a4866fa35846579338bbab3b5cb03cd40d7185c0d05eaefae8919ee4. 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/IT0CF1500133.