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 0x6347bd0e6ebb5b82d1180d46484ff92cca3198d92a5dedcecb4e57ce83d6727b. 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/0c6d34e8-0d83-44f2-977e-0eb94e682f5e.json and https://artists.proofprofile.net/proofs/artist/0c6d34e8-0d83-44f2-977e-0eb94e682f5e.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 0x82acffcf9d6219b03c0e6e5a47a8d3c710b356658e2283b22f9eef507135c3b1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGH1727681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3196221695860c833221558ebe4d606f85c55bfdde49e22f5b9a2d3517c0f4. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USCGH1727688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2170ce1e109140dd711331310a5c702458dc607c14bf9a2c1719de9974e362. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGH1727689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b20c7abd50303ea937d86f03622591cea231d7ee8f59ab833beecb6893b76af. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NZRI11904366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d152b30acb597791a2b63ac39f91271697eae3e0e00465a774ed279f9312dc8. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/NZRI11904367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d33e71c5db22ac1597f42ec6076339eaee968298b9020bef3652f3d0d3cfde4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NZRI11904371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a3ae8fd2198f844775385c8c29ce34f91080c931d0b031bae8f787aa9639e5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:53:06Z), 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/NZRI11904373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8b1fffb861081946546a4531501fec4686728153b68f165e3cc08da582e3fb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NZRI11904374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f3bf1925ca5647c321aff8123b295e9587cb8d3b630116b11b459048f75d3. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/NZRI11904375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c706b0c68c47d5546c5596ca7a6a1d1d139b8e418d982d9e41fc3ecc14200e4. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/NZRI11904377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc25a4bca728a9d3a22116197dc19994c9d15f98047e2d7a00bad396dc25e569. 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/NZAM02400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f445c694ac810adc7e4482ad3a0095858f6bf1ed22ba996d35d66d621f5c686. 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/NZRI12402013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8484688d6409c04369fc34afe046c9470538db3197649054d87a035a058e6043. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NZRI12402014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e81d85922cb33c28edd95e6e9afb2b9d2957734a6126416abb4d8f84969485. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NZRI12402015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e9d8360da4255ae1c50bf46f8c2a3ad543bbbde9132c063f94a5659e51b351. 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/NZRI12402016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3838fb42ca0c2526d812346f7866f91663ae8177ed4ec0537bbb857c932096. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/NZRI12402018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5801a406faa810cbebf176ad4efa6adeb7d782321f2618f28640d2ae090eeff3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:38Z), 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/NZRI12402019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba036c284df509799faf50b48913f2acda80bc192a3f4f06b22c68793f9b9d7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T04:59:34Z), 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/NZRI12402020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e4c2a4dd032805e024bac816e3ebbf71e36d64a39d182397c5bf57e5bdb4b1. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/NZRI12402021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8809774932793e295efd262ec7a628c356025c0a355ce65c07049cddef6d370. 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/NZRI12402022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bddeab9d3c04036f7e89b6efc470b0b73168a2d2a940906c623e2bec0d57cb0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:23Z), 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/NZRI12402023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723a3c542754ff4f8438ac2fcc2132db11c28608809804d8e019f0f0cee30a6e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NZRI12402024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2157469afceeaa3025f7ec01db4c7f675a0c7fdcb881748f912b97441d62242b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NZRI12402025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee55c7f76ac13694732e1f709bf1aa409765f5641be810654f50d357ad8a501. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NZRI12402026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71818b61adb40191274d3747f5fef5eb104e079a87016e518a5bdbb1bc6cd17. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NZRI12402027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e210a49d93861eddf4c078cd22a23e335bd4b5f799cbf766618b341508d7d8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/NZRI12402028.