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 0x2116f2920db561b5796b57f59aecb5bfeb790f98e621699f6b07e1b22d9401db. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55917a15-8e7c-4a2e-b4d6-d3c7d5b72c05.json and https://artists.proofprofile.net/proofs/artist/55917a15-8e7c-4a2e-b4d6-d3c7d5b72c05.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 0xb8a3aea85c198d87e5dfc51fca14b74a74c57ce28667f3a522d2050196f32f06. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZVEM2313539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a40965c9b260cb37d85c545592cb433488ec1642ff24583259d8ac1ebc24e7. 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/QZVEM2313540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02ae268daf04436e07e8aa47cbaf921f90ef70a36ed1e5c84fe50fe1b334a19. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:59Z), 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/QZVEM2313541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348304a658391804922af49b590c4a2c4d9ff5438ce9c0d679995d302fd779c0. 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/QZVEM2315398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d15ccc8792187658105d7fff1dd6eec8a4a365351f2801cdbb3bcb01d677ce3. 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/QZVEM2315402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14e18169b02c25cc17ab2843ce670c6b2263ea624ce08106c384214cf299987. 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/QZVEM2315403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff13ea077c3f9abc39028321a02af9baaf3be7e59194ad30810fc1574254363. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZVEM2312155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5a1725bfe6ab89def68799da3e3b5c8dceca54566a4a98e8d14453100bf5fd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZVEM2312156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528422206f380e6f7dc1646a134aff1a2de787c38a908b5a7351f41bb98fc21e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZVEM2312157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40de02d0caba4a2cb8040d0f2dba1256cab0873b14398b3749fa479e8822a24. 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/QZVEM2312158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483df076a3b6d722a6acc0569a4a0be51e9ee89b28aa04224e5d6ac1d72f0fc2. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZVEM2312159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd8c67c1283106e53d7d9406ee9b21bfc9c99a019c5526cc44aa62a14b6ee96. 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/QZVEM2322167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64450125b92c03332b729374265438cc2599ff40158ac6221dcf656768ec7d0e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:01Z), 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/QZVEM2322168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dffd2a302217452775c396d422cd8e4e96c1d50f1c5343da8fd2281a992e11. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZVEM2322169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5490c3be1e07c84db72b99338b761c0d4b6754f0f7b6ca6e43a2e6afc5986. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZVEM2324237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e00ad22fcd5c2724261c4e309227209fed1306704ac7f525bfcc035ae64a2fe. 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/QZVEM2324238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5208fafd55254b79aee2a54ea473c626e6d2d38773dbb57d241dc43d1451f681. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZVEM2324239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038f0e3ecf7923d39de72634b617cc270c190a2bacc24258016d0d0bddbb1d8d. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZVEM2324240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7107c702c6b3a72cbc5997d20067d4d2c591a853ee011851724043472229af4d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZVEM2324241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aa42ddcb4dcb5091573165b0055b1514ae0696188fe446bd4df15434a5dacd. 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/QZVEM2324242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9b19bf0f1dca5ce028dfdef32e1b745e9246903fcd200b27e42d70ea35966c. 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/QZVEM2324243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e8b4fc66839023f8cf0b3fce4c6706242d738637ac800e8c5abdbb5e2e4ab2. 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/QZVEM2331817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d88819d1a11f392466c1f89d349608e8f871bf4c719619a76823155be61f4ee. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:39Z), 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/QZVEM2331819.