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 0x69fad08df0cc75902682d0882b445a670e3680d30f53250058e74810e7cc3ace. 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/0f8a1e0f-0d47-4030-9b86-3d20d287d6c2.json and https://artists.proofprofile.net/proofs/artist/0f8a1e0f-0d47-4030-9b86-3d20d287d6c2.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 0x9526c1b11f75a7e54e339211b9d321aebc4aa80a76fbef4fb99d0284c3ef4130. 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/QZJG51975082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeafcb02ae27fa74912f3b68815d3573341e1e1758fae3782db8cef2a1edaf03. 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/QM8DG1800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d576116c85e65dc2d849c2fb091591476a69777908ce585965728280dd4d27. 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/QM8DG1800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e2e5453b4d2c7f647d56b59b32f61376749ddbc6e6aee9e25ad97e4c86a3ef. 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/TCAET2097068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf474772379965863db17ea0e598748d0c95c445f56c515e5b0d916cf2ed0070b. 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/QM8DG1800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a212b6a4df4aa23e57b3b4b0b777887bfdb714f646adfea13c8ac687317d461. 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/TCAET2096299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19806ef026ee38e3f58e868ca51edd135557da86d63fed604467625a36717109. 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/QM8DG1800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3bf92af71b8c67e742431113aa24319ce870e42094400d5d7c056c7b249183. 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/QM8DG1800209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6493d797b1f5844bd430eb2c4558a899d753eb56a4931793b963282dbd335f63. 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/QZHN62205446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b429dceb6cdfbbb21ab0fe43e4607e037b40ddd3dfbecc7952172213145000. 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/TCAFM2193302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e8585d3f0e934120a8f8e620944ac530669aaf0e25cade69eebc7bb5b442c4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGK2219923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1796877cba450de964d8b97fb0ccedc997c789c52f5196fcbd44c9dc3f439242. 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/TCAGB2256290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf09a5d1f4b21449723a720c6e090c999fd8fcca1484800062a08104673824b. 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/TCAFC2087234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999c96726d94d2e0531d6e2ccc7fd850b4e27ce8d7b297610a683f0a77f40d93. 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/TCAEZ2020487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47fe306b1230b68371cba81b26409a94a58029095f34636443a3f23ed3b8330. 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/QZ5FN1972984.
Strapped Up (feat. Mike Sherm and G-BO Lean)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf821cd2e65af36458aa6f79611352b05c52e2c509ed246f34db54e93065d4275. 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/US39N1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ca3beb31fd87d25e9b0d70ae7fc02204b5cf1adfa5839e7dbcb1be0a666b13. 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/TCADW1808941.
All My Niggas P's (feat. Firstclass Trey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc7980be3b4f88f59cbb7860e88002250f69964ee77b86c3d141415ac56c688. 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/TCADH1748694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13d018d700014367e8a1aa56fcaaf1bb14c04e6dd36915d9fd47e96e3218936. 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/TCADH1748791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73052fd9e0cf5b60bbf4eef6c1fb7da632e416f73382be20c940e3dc1b059cf. 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/TCADH1748790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa433dbdb724edac611470031b5bcfe45fcf59e65156fa2d1e522c0eb7898e24f. 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/TCADH1748691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e061fe4e1f173b2424704d33004311a68ef78e1f387d2a211e110f81cbb7537. 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/TCAJJ2536359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7edb84e51d87b01e3dfb724e6c85bfbf1ee856c06df2f4275172736b20338d4. 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/TCACS1655466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e577055f3ef1d939f23cf5bac8b0654cf2ee3d1d4ed0f15ae4c00e9b338b77. 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/TCACF1587627.