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 0xd97b646e0e9a8aac38446ded311a66a0cf7e056eb326e645f0f23eb515e65ee6. 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/8d6f9860-d4b7-442e-a352-37c416b254fc.json and https://artists.proofprofile.net/proofs/artist/8d6f9860-d4b7-442e-a352-37c416b254fc.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 0x40319b5810904ffef05a06708a74b1006ccf7fd623dc45644e193d46cab2a003. 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/DEST11500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332ee493c5a69a5e92982d7169a81a505f35e5f6cf1ace5087a9195bedacfd5d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEST11500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eaae45d8704c095e94c15750fca5abecf9f3f9dfe5e64291cdb43eeb9c9fe0. 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/DEST11500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc624a05645b662c4a00c8c0bbe2d49e222ae714308a5eba4e29f53c9acaf21. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEST11500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82526d4ad9254ecde2f7a4d6f179226bf197f2d291dadf9f63738d1dc3c9334c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T16:13:30Z), 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/DEST11500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2190721c314cf93b87179e59dc779620882a028c7de7761f9ec019a9d96db103. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEST11500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0705cba51a34a8c43f6353fef63cbbab62481996f13c77e73c458e66feafe4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEST11500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908750a7151d268f790d2f5b804e43ff89dbf70b824314ebe6b43dba11a21676. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEST11500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279eda164b05c2e9c4daacb51a8a63d73b10129d9e51ccf0e748f04b09f7987e. 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/DEST11500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c9f642ce490513ac0429a15707744a670b18eac7fee1d42fc81abad8b6ed5e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEST11500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89a06eec096e0b8995c88f7dcab131a03fe9fe56a60e3ffb782b144cd90329d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:29Z), 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/DEST11500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3c452edf336ff47baaf0e1fc493f0dd43c1ebccff58506828b0018b2910070. 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/DEST11500135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1421a5177f7b9a9f48659f01096e7278b2276ee9c4b0a2136f94ade15f08af5a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/NL1AP1977384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c1fc3b2e5e1f7139445418a23dd999ec11554b70e98c06522563b4567c28a0. 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/CH7812069489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7551e99396f4d8ed5174f50808510b155cd7bd8d8d3f9dbbccd348d97541195c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812069486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c1fc3b2e5e1f7139445418a23dd999ec11554b70e98c06522563b4567c28a0. 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/CH7812069489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43924dba8cbc9ffed06e571036c1fc49e25b376470f55b0cc4b2e9500bf2df9. 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/CH7812069492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f59820a6763ea52d5fd2907c7f8744069293a141c2626c890b4b9655e9e65a1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CH7812069493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9ca5897505b4fc2ebc77f7df95115134ab7b09e3ef5f21f84694f187c6ae3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:58Z), 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/CH7812198443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8f955a90e4a79bdb02506c57d4f0b307a59af04033c5ca6bc32ab4db71590a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812213178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5092162fa3fc9d4bee8e4b2d959a6f91832eafe52564377710018fa5fb03dd. 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/CH7812214687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e9b8e252254f5fa94205c924975253d7d89c06fe07d1cbe6135e3dc8c8331a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/CH7812216405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fe731bb2e0e654e8a290cd2c6bfd067ab80bda065f9c01f126e3f4607004a3. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/CH7812216407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bba074a9ac35905fc9f203936a32f80c5b855fc94f2f654a3cd3d4c59d1b8c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CH7812216409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720a38b6d5a3f370a7344234dd22ead1d5aa6ad3ef81dd7fe879a71b80195090. 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/CH7812215411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672a7f872904239a8a05e6e4c02ddf597cec73be26e498f0d68ff5b26f9e1bdf. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/CH7812216410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968457bac4efc56454e824a0ab4baec3313b17ea76b60daee392ebd3d1d56696. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CH7812216411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff492779375289b9977a2ecb53a40f3ece24acfdce1346fc377f5294c093828b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CH7812220990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2ee7530e761ad2978b4340f961104bc8c8b3d82b056d88bf14a3845d4db5ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812355536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fa8ec993176e82886d5ce6c5dfcad14008d6fa20ff47bfc2a64e2698ea96e8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:13:20Z), 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/CH7812357501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b040b812759221fb6337c743ad1ab2b17febacd15782b63efd5541bdec03c8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:43Z), 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/CH7812406546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6767a271aab556e975c21ca0f6e3f50a4e69783fd3c86d89cd2aa5022025e53. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd914e691527668dcfe6766649ae912a85042b8275ba4320a9c2e93cd229f88. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ901601250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e10388266da30d9565d93d2d129bbe021a2d9f34f222c64d06db072a8e40bbb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEBN22200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa595abc6b7bfc61bf909518cc4eea221654958b3ad67d252af57ed582b5d85e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DECE72202216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779637c4e0de48307392dd77566687ee8f4f00aaac153b4299d44154b8705c38. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEKF22200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ad6f73421160bd7d22e13f4ae980bcda4a50fa304d0227287019ac5472a923. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22200685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779637c4e0de48307392dd77566687ee8f4f00aaac153b4299d44154b8705c38. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEKF22200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6810a3ce3376ff5022343168d452fa7a42773a1ab0c7daac5d295c4d740099. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEA622302028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68cbd90ab1de17d03586bf3e9455aba20fb3e72dd9a1bde1f7e584367d80dae. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DESO42000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a33c5be68ab0f9356bf72fbdf765512a77194e6ea72061ca7b4e1e09ef7dc8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DECE72303674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2cc899d44eb571d1a6c8c7c7ced6091e0bd646ab3ab4efff2f8733acbaad63. 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/QMEU31617430.