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 0x5ac02113bb61cdd10434e2811c51d259bec8f15159752f91e0c31f5730ca8e01. 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/874ef57d-2586-4ac3-baaa-3479b2065cdc.json and https://artists.proofprofile.net/proofs/artist/874ef57d-2586-4ac3-baaa-3479b2065cdc.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 0xcf8a0f6ee5b5f0ea084fd618a19e5af983e52c6a8e1edffa2c948dc2fecb2f51. 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/DEA622100535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811819dbcb5af4afa77ee941afbe707fe6f291977efb551ac8a831d25a215956. 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/DEA622100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c528315f4602be706338e56aa399310697ce8994e661f6b19a2be1cc87338eb. 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/DEA622100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e936de32cb29a97679fcd95876503b140904f9e246b362b2d634b9b92ae269. 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/DE1BG2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8a0f6ee5b5f0ea084fd618a19e5af983e52c6a8e1edffa2c948dc2fecb2f51. 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/DEA622100535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269e739b537960b2a086b2250e6caba3f4901aed7bb2132b31283700edf6601c. 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/DE1BG2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a4a95fe2b692f5bee42e9f7a2db872e362427a97de6d6dd15dddd6a78841a3. 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/DE1BG2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1028f8e6e10d299c442d8a4cb8d577764cecdf072b7bb35da4943f394ed69311. 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/DEA622100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920295a09ebbeb89f50955701366e59d1f47395fd393ffe7a56b3747c5202975. 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/DE1BG2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23addcb564effb42ce5fa96d69a94c7f0530246946174f378a8ba46941fb5838. 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/DEA622100605.
HOLLYWOODREIF (feat. BILLA JOE & Morpheuz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17865bd1c8cf3c50c0dc1444f6ab95f0dc97592eeed091d1cbb67b2d7f69c95. 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/DE1BG2100005.
ICE CUBES (feat. Scorpion Gang & Faroon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6dcb0923485d361018a0643f49081547b88da54d1cc1824601c2d1b620680b. 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/DE1BG2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168c170b52823c396e37194b9baf834b426fc65032ec2fc8b84cb06561fa56be. 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/DE1BG2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad951fb14911dc2dbfd3302f1ac94cd8362632a2d2f1154135d81a5484d70614. 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/DE1BG2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811819dbcb5af4afa77ee941afbe707fe6f291977efb551ac8a831d25a215956. 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/DEA622100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29c1a7ce64e1ba788e36794da7ef6f9a4c665c8d33a8967c8f4828874cd28ee. 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/DE1BG2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4d632fc2e730d2939b9d43611f1cbb9a37c814eb3a6a17e35e9e4bdc7cb64a. 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/DE1BG2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec41c46d758c983cca8d05c1da3f96ab99528e38f4c3e459260c8a9fd9f3ca7. 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/DE1BG2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c528315f4602be706338e56aa399310697ce8994e661f6b19a2be1cc87338eb. 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/DEA622100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcb7a7ada6855993d3c3dd52eadd1c7cafdb7af5023d9c9f26092c1b13752d2. 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/DE1BG2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82617ce64a97b13009f9287556792598b3ecd4528046ce611bccd418a9ca2d3a. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DE1BG2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad951fb14911dc2dbfd3302f1ac94cd8362632a2d2f1154135d81a5484d70614. 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/DE1BG2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6dcb0923485d361018a0643f49081547b88da54d1cc1824601c2d1b620680b. 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/DE1BG2100006.