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 0x5a7f68191d788e7d221ac06dbc85d78d364185898de6c2a047fdf0171af0609d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59397d54-4eaf-4366-b1a9-274c81ec6435.json and https://artists.proofprofile.net/proofs/artist/59397d54-4eaf-4366-b1a9-274c81ec6435.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 0x3fb86f153483df27cb431ef42528aaf870dff746f7ea62c0a3cc2b2627acf511. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/IL2220301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6fad2d9c0c6a4dc748bc8284d07c03bd55cc7028f6ff5a11a2eb392a49874e. 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/IL2220301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe130e9cd70f180e4e395bea7e1ac89005113b3ceb4a6e4a43504cb3a84781a56. 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/IL2220301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e8d12e7b0b158e2137af873f6e3152832476858b38af598fa076ecc50291c3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:06:09Z), 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/IL2220301060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb1832a75180779e3f1af26fb7961c142c0ebbd19381e52c0e8cc87549a2b92. 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/IL2220301120.
Mechapes Haver Karov (Looking For A Close Friend)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dcd949e280039552c55ed20275d53a384beac158fb8ce33629bfcc395dc27d. 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/IL2221503002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8602c2c5c8ac01ad401af51197b25cb5cfbfb4f21eb3ae2c4cdb675b7eb760c2. 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/IL2221503010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc171175396698d138efac61e62710195d9daed0cb293600a33c3242e56cf5b. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/IL2221503013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bf40875c76fa9a33c01e499645fa96b030d1a06e432a09c021a29556663db5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:53Z), 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/IL2222109001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf249215fd59228a88f3f1e8d150daa9df2ece85e3705e3d956afd0e12ec0f057. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/IL2222203001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf85a10553270e98894a32a69bf151f715da8bbaf806395c81de1560b6868b97. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:47Z), 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/IL2222107001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738b2bd57f8495f35d6487c08ec15c59043799a274809b26d96b7de57f624d2e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/IL2222301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efc7cf21f4aa1683dae4809fc8b1de54206b3aadcb1baf79444f85c9e70e50f. 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/IL1042005510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16071991b902b0c9422dd561d0ce3442d4fc1fa575e535cb8ed365e4c028bf70. 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/IL1002100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b68192d78a726f59b83e00fa0a817b0f0ade6d5d3227531d3780f267478148f. 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/IL1002100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c62927934c220eccafde0084d135b7d07521cec0a5ccca4fe4b795e747b7c0. 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/IL1001086635.
Min Nhar Li Mshiti (From the Day You Left)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc831ff04160b226018e4c1f47624e2ca8fc9931713dc145bbf397c4cb3e8dea4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IL1020802486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc346b46b5c34a6c4447edc70258857de7b3f8557c29e459ab5a04d102e751fc. 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/IL1020803850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cfacb87cb46fe007f8b56bd04cfb43b79633c1f3c61f8c42816e3a4e9a267b. 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/IL1021004331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2859c170843776acc9916d3c84678754e45d3e0f9bdbbead9d0fc419c08844b. 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/IL1021004332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c0a60685cc05fc53fa16e97f9800d165d278f400090e3aaae26db48035906d. 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/IL1021004125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a30ee633abac2117fce799489d003e5e40bae539c208e0eab5250c3ec1b4bc7. 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/IL1021004333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046b00994d2e539d15e818e948080c3de8f6519f8e84a7f56dc79310365b3441. 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/IL1021004338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d81bc328302b74a88cd294c32f720998ddeec11eb015e09f2de80e27ab37290. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL1021004337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349f5f5257f0fd2cd8e5c11d2de56a36ca5f94de193dd79d13ae4fedef4c86ae. 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/IL1021004336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21c258719fd6c8e3f2b4e7829900b0bab14ff38aee63eed50e04d30856ac1c8. 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/IL1021004335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70834272716bff6bd51d63a94e2dab6a279019616a54bbe17b63d7a96eac054c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL1021004341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ce5c8967074b56982171828bd85feb8ce321b47e54273cdbb9c8125874efc1. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/IL1021004342.
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 0x1247da4700dce1c519cb0acae18477b721d4beef39f047c6ac7fd1539b143a51. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/IL1021004376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3a5528674a308c0f45343cfec755975fb68c2b26b3582f6b8564c5482bcb4d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/IL1021004330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab46f6fcec6202009646dea291c2a7215c78729f545bc6888747c28dcaf97daa. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/IL1021004334.