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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13737e7b1186a0846da3985fda84cf58e198b28780b379ae822f61e39a610c4a. 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/d5aa5ca4-b308-493f-8789-8d774cf63ed9.json and https://artists.proofprofile.net/proofs/artist/d5aa5ca4-b308-493f-8789-8d774cf63ed9.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd184221c6b7b8d3feeab4a00da391482605b76d62ad51362ecc0f7716a50d719. 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/HUB831700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733bb55241c2a42524e5bfd670a4a95d16af787c4989976cb00b6d49431795ac. 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/HUB831800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8383895da7b98a42c75fd59f1736316bf56dd5d30ae813a939eab6861166b7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HUB831800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c879a690543fecdec539ce9ef2a3ebf43c31913c452446acb9dbef0ab7f3e0a. 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/HUB831800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e5c8d0d0db367d0fb7f77f969915624d7eb0de96f74bca910737326c3cf8d6. 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/HUAHC1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb67cc898c52f7766389f02e6afb730d1245512463a44600f8a16f36d7e9566. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/HUAHC1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3d53bd8b2a911549d9491e3afb042f39b48b6aee5e1c930ab61f388a199d17. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HUAHC1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685c9b80db54ab0022ef2e45f85f70d4ef09f807c969be7560559b4f12a0d28c. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/HUAHC1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4508c4e1a695b82d961343b1658bfe6248a6f36305c6eaf11d2def6da5cbe14. 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/HUBE72200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbd9c724305ec5d885c64ee545193e44cd3cf453b23b17875ed83f2091b7fed. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HUBE72200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1b94b90edeb75a52f1aa7b8c515b0c427a5e0242c242c892a36aa8959038bd. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HUBE72200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5614d087c3216404be09deea9f550360b62a6c3e2c71833a3367ff62fae8ce81. 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/HUBE72200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fae73bbbfcc4f974f1f736221d4bad886bc671ac9914c91f284c162991c53e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:31Z), 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/HUA612302869.
Esthajnal - Szimfonik (Live at Müpa, 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77a47ff08152fa332a98d3ae12d1a599ef8485bf4503259fc6461ed34ea9260. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:58Z), 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/HUA612405192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65813c4f78735a10dda03799bec6222048d1dbcc793d33788e6297854fd1ab0d. 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/HUA612405193.
Beköszönő - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3722a16884874ad4b43bea23f65fd0d4c8d6df1cdf128aa01775cc201e5ba3f. 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/HUA612405194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab78089313a12b6d15fdf7c2bb71d3b6e545e2d67751f483e75f771020f63d1. 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/HUA612405195.
Szűcs Viktor - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c1665538761ab33992ba518190366dd5336f180d283d3550a7c771008ca520. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/HUA612405196.
Szólok, hogyha elfelejtenél - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8f8a985f8f073c4c700415808d02a301e90dd80469fa2656de93bb1be20edb. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/HUA612405197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdfa8c16a1f6c04375063f04424d5127fa77e73d9e7fe2e7d57a3e7277112f2. 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/HUA612405198.
tu parles français? - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf971c0a33906627e23ea4f8a8d1be4f0c50b1310fb31908ab09959e45e3a69. 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/HUA612405199.
Ha tegnap még nem ment jól - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb8ab2099edf95b2337948552b15a06810bd14217aa776a7de4cee1535b51e1. 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/HUA612405200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec90a006f4ca8f98565e2757360072560586f07b443b91b528d498fb430733. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/HUA612405202.
Egy jó első alkalom - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76a43a9c8a311fdb416f489888c5f150443a94a98f697b6d96efa07ce2ee913. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/HUA612405203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2e0a0b929db955f5e37101654d1f0f00aa29ce530e6d439fe5d94fcbd91013. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HUA612405204.
Sanyi bá' - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d96dab06bf9ab416c32c573264dbcb114de4451572de2d4f5fa3646de56e2a. 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/HUA612405205.
Majd a másikon - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e601c98b6394d4c2c21d5ae523edba0b48357db43ee9186c464bbdad55b3aa. 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/HUA612405206.
Álommadár - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb7e19d87aeec42f7be6e612c4ab95aa09ba676a2bc2e911e9379513dbdba15. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:24:30Z), 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/HUA612405207.
Égtakaró - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7929f765ac257d1c6ac8ed0bb3dbff3c7531da881ef961c305eabfbfaf76ae2. 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/HUA612405208.
Esthajnal - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fae0ed511805080afb01008693bbbb035b152e6937f77bfb9025f3cc935d321. 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/HUA612404931.
B oldal - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cf61b9cee239a52498a6ed37c47ba7efd9bf4e18b31b26c60937c15fcfd9c2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/HUA612405210.
Délibáb - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c125449f51b3649cb6061a4b4a66e91684d6e310d2cd2f8945a6398bcf04c11. 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/HUA612405211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8621f7dbfd3ee1f8b6da7630f17fa5631e81bced02c8e5f7d5432d9751deac2. 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/HUA612405212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e7f32d2738ca04e00275b3c89bfa81d8c41cbbd2259bd3b594768bbf377f79. 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/HUA612405213.
Tüzes, sajgó, szép - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac95b8b6c2bded85d00b8499042d243df383a4e3bb399dbf3894401247af8b5b. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/HUA612405216.
Mutatvány - Szimfonik - Live at Müpa, 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffb5a8fa00b284ec06643a2e191b2fbf599739425dbc0db10b39abbed7a7cb5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/HUA612405218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d6aeaf98c26f4d7a3e883f62b34822142aa697b04f8e588774649e5261be65. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:01:54Z), 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/HUA612405220.