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 0x132ec288fe9ecbb2139e2c8d6bf15a4301b3a6c4a0d6397f72e2dad7aa7061b0. 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/36ef8058-9b84-4749-8114-7f44fe7978b9.json and https://artists.proofprofile.net/proofs/artist/36ef8058-9b84-4749-8114-7f44fe7978b9.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 0x03c7ec90e2bbefd4697c6daeeed59354da98a4cdd6097d7137600372976e02ff. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITB002000284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fe6d145420ef30b1ba7006a45406018a309ac349584e7f7366955e45ba397e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITB002000285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b12e9d3b16ecdb9815c689af6f4470ea63a983ad18a863e5442cf9da4528a6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITB002000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa3a9e71a9928567124b1b7e74259c894374bae66a26aee95dd3c59d656fa41. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ITB002000288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97ce867afd4c7b9861fc3df35b0eab6455961fe2069989647b8644ba1f223e0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITB002000287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c46cbe2b333dc75c9ae425d93f114396eaee2f0fb6de670792eeebb69aed94d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITB002000289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027184ff1ad75a8b184e3e0d9bd75c7300b5fb4a6b005c872bc75bf28dce51ca. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ITB002000290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af3618406c35e548a46d35e60d7da7a17a4098c48df501dbbb319ff3d08630d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ITB002000292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e685952bbae47355ad8c72e41e67839ea6518749712386875da04ebaa21a0b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ITB002200344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0b10b7bd8b01e9dde10483d4d4ab73282bd6f7b3a139a40009a5cc85ba983c. 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/ITUM72301104.
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.
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 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 0x5285ae217d7f769099db732dc4260dba08499722cd105b320c0322993a7b6fa4. 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/ITGGO2200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeeee4bf4e4e852f86a45399100f9fca1811f6c69b492787186ddee47fce392. 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/ITGGO2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c75fb014c4a827e3205a503450014808910d64ada35ede9dd57ee913ab940a2. 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/ITGGO2200109.