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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4a52b2b9c123e71348ce9651ebd203af47d298f9348dc5014a51aa7374f445. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/640019ac-4246-435a-b37a-52d8e359f823.json and https://artists.proofprofile.net/proofs/artist/640019ac-4246-435a-b37a-52d8e359f823.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09fc4c1639f0ec302405b0449277073c12eeb2c09ce9a325c594fdf7abc038f. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:41:22Z), 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/TCAJC2402539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bddee7ee578e646efc3e6e3762b384d6501000de315c9399942dd53c650982. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:54:36Z), 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/TCAJC2402561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8687aa62f17901bbf79e3d25a25b4ae4483b1729bf4aa0b1bba20a311d0ce02e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:41:56Z), 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/TCAJD2427476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569ae227e391ff26980f807c5e2ca83327d111da633baf23a936c8ffca6d1804. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAJC2427480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca48b8aa660ac350ab5e9fa368df9a2fcedced757111e28725df2325974e854. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJD2427488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242c202ae9226e66bd1a423e485b9f7e127fd771c45383a519d8fc885f1ec3a0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJC2427499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27741880dab6bb3edc39c8a6347d3466c74a1dd18dd4ef6ce412f81dc1f697b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:10Z), 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/TCAJD2427517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69579c195ca393738a99cb854cfa2738994e01be04ab1f7ca06ba162c49087c7. 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/TCAJE2584635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702579c54f45eacab0a7ff2ab7fbef2cafa6bbe5318f1e5f604b73b30f457b9d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAJF2524365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524060393f80bb9687942447f130722c9a6f3fe38ce1d83195ededefa3ef77a4. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCAJF2525636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85da65d3dbf5b4ee0a4a4e3ddf1486aa965962f5a77c5e2868b735d4da4e0518. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAJJ2574264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbc4697706496c5e726cee72da464c238197d46bd6e50e3dff4f441ac9308b9. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAJJ2574270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24eb94f9a9fc0b873a089ccbf6b2c9a7390ba7f7bd10d66da7460471a48cd17b. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAJJ2574275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e65afad2cf02c32382ba40f5190d0be048570ce8023c4415d7e5785f23f16f0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJK2574279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b746ed99da69142ceb9e9e4593ad05984bc8a43c0d9adb9fbdd7dc461d770e8. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCAJJ2574281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f2c0ed180b4b1a495f87ec1d9aefd39a4481003bff35cb0fcc8ec503040f7f. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/TCAJJ2574284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbcc84a0d4a22cab550453365e75e6c2a3af6251958c5fd5c39e3a687962af4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAJJ2574299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93376fd925d2830f71c7420dc7647149a863fdf32b86e30ff5f251b918070ff3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJJ2574301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba5ea6c7e1872836ebc0dee55d784ac8e6dd4eb92a80838a47c08f02d241c48. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJJ2579401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6771197b5ae38ff47f908228b4871bdee5ec78b16cf46fc80b1f6c3e131810a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJJ2579412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005cc9ef4d8f911897bd8304a4a2256bf9f7c525c6f55ff2495f798a71ed17ba. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJJ2579417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c51b2773eb2ce43c3ecaffc4e5fd6cbb98bf6cfa0a760b4b66e5bbdbb62705b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJJ2579424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6458c099662717f72ddd2c044b3652fe179ce11946e2ac333cc8c6e0d7b9ba6e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:02:15Z), 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/TCAJJ2579434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950bfb6e4295c618a24d7b316f3b6d0ac748dba817ab5e6761f0cb0e21a831cb. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAJJ2579443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10786e2397d7030ddf96e7c58c7a4a6411096bab022b6b324879e7f02895b55. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJJ2579454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941dbcad056e073161d9926114f44449d275bd99f6c1e559ad50f4f7bdea0e74. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAJK2579456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d59a1d91e379570ac72353ec01f91fe4bafc2489baacd8fbdcec1c04ec5e24f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJJ2579461.