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 0x7f3511071415baf7d55c2611f1a78c637d59e9083325f28d7b1e914ec4ea83ac. 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/5f29a4e3-210e-4874-a91c-ef7803dd2010.json and https://artists.proofprofile.net/proofs/artist/5f29a4e3-210e-4874-a91c-ef7803dd2010.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 0xe73eafb3c116ba816a038f4cb7eda88bda9d79924cf80f382a7da4a8e3ec7b92. 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/QZWFH2571981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dc4046534fd672fd3cd76269761bed7a1c2f960c1bb8424228e7cdedd2a22b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFL2581836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674867fc0d257a972faa91f5955192616b8b54497be2bedb941940d615c19501. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:41Z), 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/QZWFL2581837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b54c0705173688bb78d1d52ca1e27d0b77f4eb52ddd49b8af0924889cd0afb8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFL2581838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a2c86f8175ec479a721fccde73f67098ef38b13a5132a7209e2fc9a4b2dcd9. 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/QZWFL2581839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c84e6df4de3d1f7d2aa2e2755129a3de2df9777486eea746df690ec193f81af. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZWFL2581840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826c0bd1f482f38f305dd3f253cf263bcaf68ed6e3c773ef553d059dab7c78cf. 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/QZWFL2581841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231a2849292983d269b0d7ee53c7ab9f3b3b2ebbab76e1579e7f4f43c5b6f605. 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/QZWFL2581842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f79a713540cd870512d213fa27949aed74ce58fd12649b68044363b9c618d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:05Z), 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/QZWFL2581843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd239894fe82e6d9c2254a99885e18d6fd6ce169a9a952f69d6fe5b1f2dd17a78. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:00Z), 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/QZWFL2581844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbed34634b97c27de1fc3f1b3635d96df9677dc327367039d7ef7fdd9beb8047. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFL2581845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbde8ce58a9f953eb78934b7f66956a532ecd3700495424802a04514de04bd70. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZWFL2581846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b8912a08b0ec41b90aee882edcb5f99bc03475b171973bf76b795e79892df5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFL2581847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4b4ad267ec8767910da2389041e4e338d9f3e9909660c13fe091a7ab2d1be5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFL2581848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc122383a237dc23691b64cbab6edb29be67dfe90ddd3d625d14dcb4ffd5a4be5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:59:54Z), 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/QZWFP2523182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9975d8c50b1942e9ac6fdc1e996f493882aa27344aa130a14f6e420650b690e5. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZWFP2523183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9948710c16919da91ac698685a1c51c7c9199091deba545501604e17cedec2a. 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/QZWFP2523184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514770a5860f902076d5f0bd316ddcd94f21faa3e5b66b643e9fd4ccda32ed57. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFP2523185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef377dad3db84b5ea386a0eaab54b1fcd3a32a4216fc4d0a64f9dfa9bfc26c28. 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/QZWFP2523186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0c4cbf2ab62400917a9fd6ac9d0e242e929c1e02a129e9db9015bdd8927acb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFP2523187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739a72297a13106ec1ffdc7a0fe7e1db951c7d6b6c2830b86c24a4a74be7462f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFP2523188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6b825932f078b777c5919ba757df574626160265f1ad39f97d27797f2e989a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:51Z), 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/QZWFP2523189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1babdede3ac366f69fdc78053af4b2bf1c6f6f4f26552ad9af26ddd4cf45de6a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:54Z), 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/QZWFP2523190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96e8201d028eb2ca317ee537b61459b34874c982391e7a950958b00d051b1dd. 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/QZWFP2523191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698bb68af170144263f348833ce154ce3c4680748a930dbf2a4fd0cd0248837f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZWFP2523192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a22cc8d8e2829e0da594ccd609937fb978fb4943f45aabe1fc63e244182797. 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/QZWFP2523193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e9a76d02d10fcac417995f2c00639b10a026cbfc29a31bbed64333bcdbde4f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:46Z), 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/QZWFP2523194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4390a4c6a302ac5361803dc769b9cd9e0fcf181b701c23f7d0bd4f43608827. 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/QZWFP2523195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ff0b9301d11241cb6eb51515b01dc305b7afb18e7f7309fd2b0a77c0e43bd4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFP2523196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a2781989dd10803c1a1d97c92b09f809b48c6a702cbc60e7c4939fdb62cc19. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:25:04Z), 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/QZWFP2523197.