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 0x53e44a867292bfb111282a7ddb30f3cab19a72424e9dbbe54606cc55515817b3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cbecedc-b44d-4adb-9e86-3caa48c66ab7.json and https://artists.proofprofile.net/proofs/artist/4cbecedc-b44d-4adb-9e86-3caa48c66ab7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Slečny z města mezi druhou a třetí tečkou
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 0x2796cd212cf09ca4e3aef5182adb2bbe6be549caee79009f1fcb32e3357adea8. 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/PLH491800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e841f7700b17322645ad351d426b1054a6a96756cf36ec038d093746915860. 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/PLH491800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4b52a31a519e2e25d4051051bf5ba373b00855913fd05fa10b592660b6218. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:16:00Z), 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/PLH491800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835b7495000f9dba3e58bbdd81333d536826c9dbd6051f5eee035c78a3aaa352. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:45:49Z), 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/PLH491800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4aa7944e759fd410283201a8504796f7140ba624f1d9662429b0aceaf714ec. 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/CZA161340144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcb61a8b4abe1cae764db4c7bc3ec3feda7b34ecd37df0e36f44b56f4e1b487. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/CZAC21900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955db167246c3fcd4b30375053a3966813c1304fb0a1c8f7b7150eca60bc9c56. 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/CZAC21900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edaa2ee1a2f9b84446aff34f86245f89a18616f2f1707623624c70f5787eeae. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/CZAC21900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a15d7ca7a5283bcaee6205bc411c0f8c1a25b47579ac554520c61dde3c6326d. 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/CZAC21900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ee3d2e615d7fb658276213b0483bf0bac8ccb51e7ae923a82a7b74d2be06d8. 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/CZAJ12100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb04062ab0bc2a61f41b7eec0627c4c947443d0eb85238bfaa442808d08ba8ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:59Z), 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/CZAJ12100504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e3e09b7c6e4b1311aa9e0a874c44dc53de6e9ee05f8082716ef070f6cef222. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CZAJ12100505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf894784831dff68eecb9654009d754b6d42532bd1df6d9c4c51d668856b671ef. 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/CZAJ12300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ddb1a195ac93f06e888b5b4d4a133d3850dcaf23746b8d47cccc2729d014ce. 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/CZAJ12300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c16283f223c168bceaa79662eb1d2765b7e426b9e07eba409d1b9b1539de1d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZAJ12300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66404c3ef9444fbca7383399b7e5af1e67485cf95e4eb80474c7359634891e86. 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/CZA232200942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ba6b00d7bc7bfb3d7a5daec0f3c45c3f7fdada214da825773bf48fd3188c12. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:17:49Z), 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/CZAJ12300707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2704a11f59e7b5e41592a5404ec35fec863e3600cb0b7ddb40983a590bd5aaf. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/CZAJ12300708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e693caaf734412bd9fde54e72f0a1cc0e1f246b01a72d339dc8c066587e510a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/CZAJ12300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5997cd006d34e415909b8ec0d994f380e970fd91b1fa9dcb0442ea69ab06ea. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:54Z), 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/CZAJ12300710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b5153e3de3ba0d24c3b69b3205304bc3e9240b42bb24dff4137a3ca595d293. 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/CZAJ12500302.