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 0xa48bf956e7f5f150311d5025085af9d0a8f28468f6578209991a31a6a0802930. 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/033358dd-6e87-48c1-88ed-827b680ed563.json and https://artists.proofprofile.net/proofs/artist/033358dd-6e87-48c1-88ed-827b680ed563.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 0x4136666d0a62d621a29c3a407924b5ec8d9ef2136a220b87fb17266b598cae3d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6DC1698590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f5fe6d25a422fb9bf47111b6cd6961dda62c3c9663efc2be57ddfa5982ede2. 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/QM6DC1698592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b06b89c6f1cb390f39bbd9e354c0b14e9242767a06ee64a16694f1b48b6cbcb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:20:58Z), 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/QM6DC1698596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686e03115a5cfefdc7c60c8d8bb9c563188b0267e788f5e13d36dc2b56cfea12. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM6DC1698598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff84a0ea0b4fef6345484afd27ab807d5811ec329aba70483615e364e37fed9. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QM6DC1698600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde9b51b290bea21147690cf855a9fc8c44afc2e8dce2d9b73d7684c59efcb87. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:01Z), 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/QM6DC1698603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3ce24725e28d7e583eb779c3a7ecdd44175d8c66ae4253148c42437b5000fd. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QM6DC1698604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcb046385be58c6d3bd38a93a7f69996f1a1e126256bd0480983ed0d3afc14d. 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/QM6DC1698606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be22caef9083ae0f93d0e19c3346fb1b8c15b4ea691f01f90ce641b7900746. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:58Z), 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/QM6DC1698608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb664d1b9993956e3fafdc06bef0057e7560c16de674a63458cd8ddb5ce62fe3. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QM6DC1698611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0946abfe55379f50726a2916ff0fd723c3d351735d412a73738274ef0d40366d. 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/QM6DC1699807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949977b7dc6d2df6f213548694d78638fec6353d14a73ceb20cc603ba7a3d55b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6DC1699809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b3870667e5e4e8a8f9a82319f1d232231fd5ef87d0260b8afb113dbf8572a3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM6DC1699811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866c9c6794b0bfbe3c766693bc14962ee8230d61dc8e008a4fc929f35e54e3b0. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:18Z), 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/QM6DC1699812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca145ae82415260bd7b1c034d3f4b5a61d98c5b99a2a3aef9c7f63a1e4546de. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6DC1699814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6813de79c87f79caed5447cb49c0a06c93a293408af1b7de2c15d4a3977aa569. 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/QM6DC1699843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72432acc12d6b1db0a15237a62a9a4c0e25c8afdfad5ed0a25213905df51bf75. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM6DC1699844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd039bbdbdbabef8c4c7b98ce45b3d6df6e5474309ae0b5eb7f79493da1736a. 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/QM6DC1699846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622f109c962bffa17fd3237a76797ada584ed13f044db6970c0502431bcd2157. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6DC1699850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf56a3442eca8e60de777f69f32bef302e1105281db827c580ce998b747eddad. 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/QM6DC1699851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff8a2fb83c18f14b43897f6ba4aa6513fdafebc32ea5d988427b750a26cd55e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM6DC1699852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5011c868f5601c750f21738d7bf13698aaea2f95ab7d8f74ae8e78684e61c3b9. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM6DC1699833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e413889d1088d0fe971fcee518f54d43449716469ff577ee2326cb3d7e671ea. 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/QM6DC1699838.