1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7b738e4f931b848a2c74799a28b0524b663a30f14ee46a377fad25a00eb2f122. 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/429e4a37-9922-4e20-9335-5dc12f3512bb.json and https://artists.proofprofile.net/proofs/artist/429e4a37-9922-4e20-9335-5dc12f3512bb.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 → block OTSBitcoinBlock must exist at that height 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 0x5a738f5fd43c53dbe241621ba5374693d185897273735a366508cf9bfced616e. 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/QZES72289352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f7e470a41434c60c77d2d0b73676119d2520a0d67341dbffbde2f042012e0a. 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/DEZC62404840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27304c163a6100aea20823029f6abe11f4b8ae951055ffe215c50d7c9ced1399. 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/CH7812409608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576c4072d4a4ef47e082b3c438dbb68d1d523853e82e8c4ed9c1ba510d727b15. 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/DEZC62416003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaffd5c7f0275650096ae736025cab6bb74723eb1bd7f5b0a3233d7fe3a373f9. 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/DEZC62341437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e99da2c4355f6477ec29720b8256a79cef8d5710e87c8d74217322e034c544. 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/DEZC62590721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82db842eef542ef25d62ecf274d7896d4dd153d6c2941bd6260f9b2a37e92947. 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/QZPLS2357238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2d0ae62ca70f433d06c1c514e3f46ac94f517b4b5c9d5cbd05fc5b80159004. 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/DEZC62590722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7089c5715dccf45aac538e222ab64898305d90a5dd5627bb83c51c5a82512a4. 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/QZHNC2434247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac57f192d710756ae59439f5266e230a866ee05f1795c9601a0c0398aa4b0da. 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/DEZC62590723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc745c90fd2657869d105116d4a704745b5d821569db13d8157dde2e89434ba. 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/DEZC62574741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471c38a55b73441f92094da575cd81edc4802791b57ef151549194a7480088d2. 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/DEZC62448091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed15cf83e547816604ed8d33cd4a03778b4b38bff120f115add89b3efb2d8a26. 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/DEZC62465008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95a862e0aa09a356cb1a2319bb696c86730592285c97f9e6635b63f0b00e347. 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/DEZC62590724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dbb17d01a9f1fc2dfc41908d1391448c7e3ffb4dd074eaa1bb76fdad50743e. 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/QZES92448100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc745c90fd2657869d105116d4a704745b5d821569db13d8157dde2e89434ba. 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/DEZC62574741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed15cf83e547816604ed8d33cd4a03778b4b38bff120f115add89b3efb2d8a26. 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/DEZC62465008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471c38a55b73441f92094da575cd81edc4802791b57ef151549194a7480088d2. 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/DEZC62448091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbb37429cdc860e07268a355c6f8d0132ba03bd6bbb20052eb08ceb9fdf22e3. 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/DEZC62432257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a7ce368cc7011639bcf7f8df1b12cadbdde75f35ce191b8bfc6ce610b0cceb. 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/DEZC62581098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f54b8650177e17d93ea91a4bd7cb7305c464481d15548f301bfce5d55f5506. 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/DEZC62410253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf937ca3eea5df3f44c44572bd441704b304a85945c61eb0d1b2867d384758f9. 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/DEZC62418039.