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 0x12bf88d1617a45c6cbec7fb0a780257df0e09e2d27b60b408e37831e7eb46008. 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/7226cdf6-6b77-4ce3-a930-84e83da1f53f.json and https://artists.proofprofile.net/proofs/artist/7226cdf6-6b77-4ce3-a930-84e83da1f53f.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 0x7abc6c9ea16b12304a543cc67a91737fa5b5cb65de55779fe7edb6f2fc39f8da. 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/QZMER2012550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc771bee9688bf0796013f16f42658b743e750d5df05ec3c157fa7faf0f96185a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITB002200569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dcc86ab8b697602a62eccdd3759ff5974e66ba7e5c0b6b913d8ac02cab5086. 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/ITB002200564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79271d5f4f82bfe5fa195c62d916ed335d0f2939855af3014d102d4a289cff0c. 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/ITB002200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4131894619bae06888759edc513739284dcf100dadd615796cf4b19492bf510d. 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/ITB002200566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a1ea131eedefccc4addcc313d34bb02d466c50bab47a5325c3f954fe556e04. 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/ITB002200565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6721da6494c4456e59b194a290fe67e66d55ec67966f92109091da3a1dc70230. 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/ITB002200567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a41371988cfddae6fb011fcbc1a05b73f10dfe2d7cde78e6ac39b0d28e41ce. 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/ITB002200568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc771bee9688bf0796013f16f42658b743e750d5df05ec3c157fa7faf0f96185a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITB002200569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf60072ed54cb4a7e71676d6a597a9d2cefda123b80829dea3bdf0ce5209b83. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITB002301606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fda86f07103f4271b0e5d06ffb209050e780f67894b405cdb4f6ef299a3b1e. 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/ITB002400784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0de685e0323a2439aa723673fa776ea146bf7028ca77857ca7bb199ed84d65f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/ITB002500987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a9d227c186fb7693cb7d09c2ce19a977c03e61e2084717982ef1c57f48002e. 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/ITDF62277090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f81f1354f6e66a5298bc1740b1f8033179b3dca480397fb8e345f73f734e52. 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/US38Y2408346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58257f9eb6661f5137a26370927edd1ba86dc7148d2c0004700205cc31a6367. 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/ITFYL2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f309c1df59d74284f13ff30e03b6d6cda266ccb62697e99697e0e266556fca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITPPB2300021.
La Famiglia (feat. 8blevrai, Kassimi, Yunes LaGrintaa, Sisco, Néza & Nabi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529e94bc0aca18f45316637ece1c5992b63ed907d185d8bf43fe6045cce33b77. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITDJ72200018.
L'amore e la violenza (feat. Paky & 8blevrai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc15733da9e17b155ba107f8cc04c63eefcdbbcd24570649d85c8566d1aeed7b. 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/ITB002200419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3eed437b1b3843492e26e72695116d86007b1063adde7ed18b7ba354c6cac2. 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/ITQ002402312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e12edebfddb079cbe401f79f241c2b0969e7a5c9b7e4da6462855eb39b3c94. 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/US39N2204090.