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 0x30f00d744d4d309e48f917eac4b5c4b5b641f4bede71b9e4bff01ce9ab74d671. 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/3773c069-3dd6-401f-af5f-58f04fc53372.json and https://artists.proofprofile.net/proofs/artist/3773c069-3dd6-401f-af5f-58f04fc53372.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 0x0275c99ae66153ecc75ce3c97159c4928fc9e81b2620a72605b933b832ff2914. 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/CA5KR1524916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123f69111cf2c2f7ef6ce796a3d02db9264d50e51ef312b726ba536b07aa6eb7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR1826272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b60b9254857cf4eadd102d207b8712195ee79ba2321b29eb9e2ab9a25721e0a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CA5KR1908923.
Shiroken - Gabriel Wnz, SGARRA Jumping Rmx
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde474bc56a665cc8dc64b1475484247e9f5659980b15d9e02ccd4b3abb6e486a. 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/CA5KR2152687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57634bdc8e4ab6399d71be0a06a7c9fe4ec44623a76d9e24b257df24fca23c20. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:23Z), 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/CA5KR2167132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169023031b8f736e94044db67352f590d216bee3e394bc3e6d8bc59e09b39752. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:31:23Z), 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/CA5KR0005229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe7915a1ff92431f391efffddc1f71150ab1fa273aa1f396024b63417f3c9b8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEPI82214389.
Ryu and his friends (Street fighter Tribute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a21f4f1f5534c64ef4ba0ec6fef6f28879986604af55af269bbf78939e3ed0a. 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/CA5KR2294949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3135afd718d8268f19c2e18893fa49d8c20945d23570dc6a7376b5d172923b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CA5KR2299633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecf837e57e3999c6d38d3615f426d143c656dadcbb1fef7d36cbfb97a93decd. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEH742410226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681becf2f6c8290ad274cd5999b41eb8dbe5a6485ae00e96e55319cd559edfde. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CA5KR2467213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c829aa245d1f42b11545acd109bea1db0b75c5a360f02b548c687c976955b5c. 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/QZTAS2429906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79256ed64c48c09bbbfa030d8c017aa032dd3a4fdb6fc80d89a5e085fb8a2d75. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CA5KR2492459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b3a1b5f3563887cf28315682901fdc7d55695cb7a56fbee5324f50cef375e7. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CA5KR2519251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f971c4098f7b264fa892ff64478c575fb69d77fbd7eea51c14601b1a1754ab6. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CA5KR2519268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fbef16d00123ac1af0bdfdf3e8e3a44544caf30801a571ae02380d474d236c. 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/CA5KR2519272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5addc832bd42ce1f52ea2a54f8dd94f66e5d4fdbe7af6e390844e9cb04416b. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/CA5KR2519273.
Conversation with a worker - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff70dcd9d8dcdc8ec5bd62d67b2001d9a4a37c20d1ae81c6fad98ea68ff30c78. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CA5KR2519472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1ddb7523dd5eac71b59d6201c6b8a542ca0b943119f3127b64c601ff754dd8. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/CA5KR2520047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90626311e5c31171d5f7dce00de18d590034370ed623791df99f2985cc1b9e3e. 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/GBKQU2529512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec77bd77d4bdfd2a6638277b191d8a14269d808e9947fc8eb0c51ad2efd3a3. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:45:08Z), 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/CA5KR2531044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bec483341379c5b9e0fa70c0a5adff9b9e7c34b1eecae498d8a78b600840a5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:19Z), 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/CA5KR2532362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01622481a352297e31d1341c21c8633392cdce928dec7bd4046ea74648eb9d0f. 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/CA5KR2534553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc12bcb03037b14db94e092af14598356e08e1467da0272b96f39f22a4f84bfe. 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/CA5KR2536337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4bbd61286d6d920821dd7ab66d6d4f4585a6f2c5db7bfd853480e775bcba77. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:18:52Z), 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/CA5KR2538581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f20ff839d5bbec9eab5c4679d56cba9333c48a4599e1d577a3ca103d5619a7. 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/CA5KR2543282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233edbcf145f72dc939bb0e0754f1b202f8921d8fb652f8f9a22787124dd1e32. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CA5KR2539859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b1d12c697bb868cac214650b58ff203f6e4d37e81807766c7a0bc6a0c508b8. 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/CA5KR2544978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1770d441d48009e01ee30a3ea1ea50918c9d3abe37072ce3fad40676f446a6e7. 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/CA5KR2586791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac520a9dd3028851f7f5338460aa4c5f8e314c831e134d36d49551bed4714574. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR2586980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ea2481d8ba66a4abd95d575efb0b33f839e4fe638a910fe72480f4760675b0. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CA5KR2589044.