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 0x6719317afac5e7850175eb53d80e3c6403d47c7bef95ea7bcb1efb54432c0db7. 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/4bc413a6-2528-4875-a659-96da48cf7fbc.json and https://artists.proofprofile.net/proofs/artist/4bc413a6-2528-4875-a659-96da48cf7fbc.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 0x9ef61cab4e102b6a8a3856ff71bdbbfbe609aae9e52654637576a685a59c329b. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/HUUM70900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b6855aad515a17e280aac3f532414be4b4ebafa9b94dc8fabf4fbba4c92e6a. 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/HUUM70900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb612aac7531d01cf4e74d5a091d4dc2d985accb94de3e82bf63738e637878. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/HUUM70900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904a58d60f397eaff22bd55cd707742265f18ea03c8a4095166e28c3573899a0. 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/DEBL61402044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bf97d91e932d41fee56e1db6a82fb1c640a431c75987bc8733991578b065bc. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEBL61402045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35e9d7e58415990d2c06b8b1a4f6337b5d6a0634aeff5b4de096edc76c3a8be. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DEBL61402052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7e16e0226cff42a612d7fc037ed7ac6fdec9e00bbf3950bae17a6ee5626ace. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/HUA851700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fdf76e83b88c8236dfce69134eade28a78cb46f52ba1321ca084e8350ac1d9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:39:18Z), 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/HUA851800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5d9ac6cd21af14f4861579fd9afb3405007ccbb3bbc585f8c1c92601ab9c21. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/HUA851800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc694e67bba0568f6b7276acf510e626e311f8c1b429d490915aabd94919d265c. 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/HUA851800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9734add036c68ee5067df7cd5c91641d5d8f21778d334419a0a3f3703949f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA851800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dc784653f30bd4e8e53033fe36d1befa3a0b24cbdf9d68e947bdd511b57650. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:08Z), 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/HUA851800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc632a9d2e901cfc01acfc796392fea42e3260cc78e557bdb07ed661892fc807. 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/HUA852200002.
Rumini Tükör-szigeten (Musical, Berg Judit Regenye Alapjan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644531cb50b677995fa161bd7fc53fcb06a7054150fcfdd7e64030ff1d685a26. 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/HUA852400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a252e0562512317936cb01fd91b529c70d3ec8acdb4e1131b271422839082f5. 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/HUA852400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d3ecc455dcf0cfa454f9759b2ecc1ac3e70b2bbea8265c3346da517e9b1fea. 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/HUA852400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5324b764e4f80a771769e59562905ee628a1e4af66903c71f3e2c81760e5dea. 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/HUA852400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d9aaccb8ec3ee66bbfd8f071b41c2a34cbe5229bc5cbd4a8248973bae9d473. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:56Z), 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/HUA852400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3599afa7f315ea8e9a21da61ff872ca5fd2f2f1a51c3f76115c36e7e0ddff7dc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/HUA852400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9fe734d46699dcaf27ec9ecb828d48f85862a0bb00134181ff6fc994cee201. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:01:01Z), 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/HUA852400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d01614b06a0b266f7cdb726a1bc7ecf5883b57be18ff88074bd1bdeb1482d6a. 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/HUA852400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a16ba623e67278ffc2eb24ce76c7f5ec5442bf6559cee4f85ab549aa33603df. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:35Z), 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/HUA852400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2075ecd665978b3525d2287c330f641d7656860c3d9b437100f5c93aedf438. 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/HUA852400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b02081d3f001ab5847a8d761c9f37de42a73208fab800bbb878c57bea6d686f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HUA852400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cba4d468202a03ae9f1e7811219eab171ae0f34d7b7e191c0fd2e07cc044f6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/HUA852400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4bd5bb39328a5ef1a492918a9a492691ae62d836cc202f57faf971ab4b3322. 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/HUA852400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6b28a3e5f167aed61a1ae227622cb7d5e858391cba803c50dd342cbfd17791. 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/HUA852400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab7ec1ae04bf61d00a0061087d9314582b85b7e018165be6ca0acb9666570e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/HUA852400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bda8fb7a7da7960b1ee4cb8e9dc64f0da155600e4824d38173d71792ca46f2. 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/HUA852400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d88b7e853fd643888805cf1b2adfe7fbb63b21e9f982ab8b50daeb6efdd9375. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEUM72004788.