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 0xaf93d960651b1ec5f54ebcdc20d7989e3cf4557772bb63693c5de409d80429ef. 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/98183902-4eff-4448-9ee6-959e76bbd140.json and https://artists.proofprofile.net/proofs/artist/98183902-4eff-4448-9ee6-959e76bbd140.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 0x849c5309d0ccdc1085dde31ea07cf95781bdc58d125e1364df1152fbd5dfb231. 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/FIUM72300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05750572653f94980d7d37eaeeea1b03a0f2cdffa9b1b7ca195da09bc89b198. 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/FIWMA2300579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1add968181f0f7a7ca140b7428b7e9bc707c916b15076119bc17bf4bb3bb6fb6. 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/FIWMA2300580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e821b9c91500f5fc4226a23f4c10195331b5dbdf310c12cdcb1a30b0481569e. 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/FIWMA2300581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe88cb5b8bee161413f20f78850e1017be7069f08c954384b7da6cf90a725480. 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/FIWMA2300582.
Epäkohtelias (feat. Axel Kala & Gettomasa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7edb8e14fc7ced4bfaf87951cb89827802bc3532da0f24e6483277c8e4d5a1. 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/FIUM72100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154f64298d8b5ca480e2fadf09750e9b0f18d588b5b7a1c97ea5f4ebda0eff77. 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/FIUM72200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4cb4e677ab59039efc3069e22605a94d7284105af9db91d58d02a6e21fcbe. 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/FIUM72200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0328cbdf15f43dc2e6c4dab99488f9088e83d142a7cf4ca8a80008177df5c936. 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/FIUM72100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dfe180326242293fcf3178af92304ed66faccd5f6abe424c933e6e7ed0f209. 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/FIUM72200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4250e49fde7023634650fbd8ad2354c23891af9dafce8a7b1414f90a0fb83573. 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/FIBAR2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad888436c044216f7d2d26239f2491c2d76adf3c8332c8034c5ffb20c10d9ea2. 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/FIBAR2300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef95ab33c5d72a042f57c42ab3b51fb6cc56d032c46aa18272f6dc7bdb8b873b. 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/FIBAR2000221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2026a783400edae1c4d931a3b306ccf864453d5a1aeb259a251dde7147e13c60. 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/FIBAR2200339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb71b9bc98759193037393a904a2b29295b156ee084e34d89e669316cf0dc5f. 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/FIBAR2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450b53cb163f721892905fc8968b5585179f1aee9ef98c4ecad77a3cb01cb46d. 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/FIBAR2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a146972bdc9238f9b0ab3e48a421b63e5a245cffe31e8f0533ace3c9b8111c8. 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/FIBAR2200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a3ee082a4a364c0f3f12d7a3704f3429e6eb4a1fd91a5ee1fd00f9fad5d241. 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/FIBAR2000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d286c525a0ffef4effe4d21805443e846e7e46186b0aaf4f32634a013d0c7. 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/FIUM72500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631c87ca22e78b2a613976fd1ba3f935a9a7ffcd39a0f123f9c9d7f17c6271cf. 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/FIUM72500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed9c59dadbd970b5d1dbb21c2508e0e5e6579d3dcdb620f0b5ec4f2db5433a7. 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/FIUM72400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeb14e4e53bc1716c87daa197eac972e9a275bf09d8aeadbaa98a2c49957c51. 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/FIBAR2100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26bd6795f00f3bc3d2aa189595caee117523ff251d488819e54d17ac284978f. 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/FIBAR2100232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835842d118eeaff87925bcb0c93e72fe23d43cdd3739aa838002161d7ff9b3e4. 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/TCAFP2155544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a3ee082a4a364c0f3f12d7a3704f3429e6eb4a1fd91a5ee1fd00f9fad5d241. 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/FIBAR2000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf74ad7803ce9a6c99e84671718ce72ef7dcbf2e64eb3d88fc546376317ce9b. 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/FIBAR2000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030cd15c55d0dd5e944bf17ec1e9c6842465243d68556e39a5aef97ac3ae0ea4. 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/FIBAR1800297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198e6910bb087a48f61309b8acd829a7765aa5348245bab59e935ada4611c900. 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/FIBAR1800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf02a4f1fa8aa14e9d2fd87a455feb4ec50eddb9ebc79ad66ada4aee93de2a22. 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/FIBAR1800300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b5108e94fd651dc14f69467cf3c92105f57e0bd32e39e7368c6273c57801c6. 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/FIWMA1700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122d48a93713b3120723fa56365d6d228c8f4c79b4a7163eeb8e320ab964107. 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/FIWMA1700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3cec0e70d2b6d48289156f1ad8cce5c460af7aa0cc275458ffc8d5a3fb9946. 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/FIWMA1700116.
Nenukki (feat. Rekami, Van Hegen, Axel Kala, Riimi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfd3d7f0a696f2399da8c3e9fec4707113be7b30a0f517145d49fa02d7edc24. 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/FIWMA1700118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857c191df0ddbcdbd368e4e1efd3d9ff11b4e750b7b5ac31b6631be6ab7f71ce. 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/FIWMA1700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37008cfc81df767e7b2a424312bd5b5759cee1cc9e3f049b978e94f638091d71. 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/FIWMA1700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44424fd24bb46ef7aeaa15df4f4e034eaa4e9442b4be551cdcf78ff91d7542ea. 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/FIWMA2000125.
Rodney Mullen (feat. Pyhimys, Timo Pieni Huijaus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cfe4061b0469f8c7fcf995c007f0c83502f1fd70b46451b3ed1002d6ababfd. 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/FIWMA2000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb0d1b29e0f7d16ae771e4a35eef5e774d36b27f014d3e37ee8b018c92ce8c7. 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/FIUM72300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdb8e325199e89deb602d9afe20cc12a436d0e8cefbb4544d23566bdd888a6b. 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/FIUM72300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe1bf5148d2941e77e6dea27210e0c04ad08a17d3ce902b3bdbe647e51f04ad. 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/FIUM72300325.