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 0xa97c5d0ad4af8adc8c9a1450bd7ad9954ad46e0e28a2d8c7cbcf32456f7d1d5b. 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/1cfe879e-360c-495e-b2bd-2d04a0ae72fc.json and https://artists.proofprofile.net/proofs/artist/1cfe879e-360c-495e-b2bd-2d04a0ae72fc.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 0x3738eca077f8b5a62da4e3c63c43e40dc5f5b2aaa081015d30eaa0bb9de67670. 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/FR96X2217465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8e338679f47ebf8dcdd3005bc42e1d00d4e3d0b5fbea36f04a97998c5415fa. 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/FRX202236661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e3abe9c0d8ea9ee38408b4b03a37a20a7fff74048434a66bf661b6a3aa602. 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/FRX202236662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d21b8e5a3466720c4562ac21e4a15a1ae0f2cec6a417769ce41e99dda90870. 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/FRX202236663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea51a48e63dbba7fc6d29fa9c2e90c677b7e15beb525bbfc974ec3a2cec55d26. 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/FRX202236664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c9f65f567298a68dce773eccbf7eac6e8245a35348eedfd233ba0c8ced14e1. 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/FRX202236665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942cf6733862527b16b6c641aa073f60b53dd1ae67f8c061a4c9861e196b179c. 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/FR96X2277452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff3e0232f96e94fac50e1076fbc74657a1f6209bfba8fb170c8a5b429b2ff51. 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/FRX202236666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3b1dd7cbf1065fedd89ee524b2d3fc76c44e2900edcecdb98d9daa7f10b81. 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/FRX202236667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118fd8cac18a790e6afcc39c62ea12259f4c4fc4cd09192fb390f7cb4cc2ef8f. 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/FRX202236668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9e10475e42baf23310b6ca9a51a922de6a60e0aacbdf4a740ec05c95db6274. 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/FRX202236669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff71a3f9f00575c281ae30513c012ee0cf8338a811003d72404d18c6868c0f6c. 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/FRX202236670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a14ffd716be74d07739968926be035c3aee01c7ded253b2eee263345971f64. 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/FRX202236671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b610cb422dae2e86401c2eb67556342b73dca9cb92662f42703042e29d1ebf7. 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/ITB001900275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668edf3eaef370cda393776afc4ebcd580cfcb52bcdc61a81e3a1656ed08ce2d. 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/ITB001900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4464ba2a4af6d7358964386e7c7dd9398ab32b8bdc80766982a163f34356ad. 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/ITB001800665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42b7f6a7dabeac8fa8bbfc28b292b5a53fa3d7bb3d0b8b7908cb936a1424851. 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/ITB001900278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b70d6dd86e8aaa05a0bf091f5f90f51ce1121c738d36288da855c26ba565e24. 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/ITB001900276.
COMETE (Prod. Sick Luke) (feat. Side Baby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6084c0c7a3f9611084dab728e7e99f9ea147d47cb7e70a3330acafc9304f5d4. 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/ITB001900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5855bd1294257dc569dd35f0554318bd34824dcf39ba223ba2bb073963427801. 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/ITB001900279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a95e39a5c3218942cad95aa9628047989d3114ed5fdb2c88e423dfc457f4aa5. 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/TCAHM2372425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c6bf85d43d42409fc867ddaef5a2983a98bb8ef223e4df5b711528b06b591e. 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/TCAHD2385053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7c53e266150100bee8ddd214d2a9d30c61a9ab4fdc08a17282504360eb1e0c. 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/TCAGW2368709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd01300dc018971f6a6c5ddd127d458a395cb399ca1e5fb484443be075d4e6b. 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/TCAGW2368644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942cf6733862527b16b6c641aa073f60b53dd1ae67f8c061a4c9861e196b179c. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/FR96X2277452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3738eca077f8b5a62da4e3c63c43e40dc5f5b2aaa081015d30eaa0bb9de67670. 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/FR96X2217465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21480bcb0d1115c03ce206630008261fbe49251e23347588d2e12ebdb82ec04. 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/TCAFW2147513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d616141289a4bde5da1f9570092cb79a649dbe3601e2bdacddfe90807daee10. 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/TCAFQ2155632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dedc6a9ef0043c8ffce68f0f511bb8ab28951bec08bcf091df0ad794f9024c3. 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/ITVUL2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4713f48aa3dd02ea6419c839f34afeb3ddf545615e2220f8dad108c625287bb5. 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/TCAFG2085140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6a38742514e1bc982b73e1364ef38575c377bb4bb8435aead3a060cd32d913. 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/QZK6Q2099857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd91d47b5a3ce01213fec1dc42799889ec17aed4b1da42160f361104a4d8535d. 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/TCAET2092470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a2d9c2f605973836c808cb062639dc1469c59edaf5e6462819c4a49f7f789b. 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/ITB002000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12ca18c7636c6238cf7795c94edf5e278126b9c6403a69465c4a0c7774b94b6. 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/ITB001900686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668edf3eaef370cda393776afc4ebcd580cfcb52bcdc61a81e3a1656ed08ce2d. 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/ITB001900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6084c0c7a3f9611084dab728e7e99f9ea147d47cb7e70a3330acafc9304f5d4. 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/ITB001900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc7b8dce06df67e6f69dec823d76518f907e368056c5ac22de354cb724c3d96. 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/ITZV71800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e726e920397ff2699af5dcc2cf0cced9e225dbb11769310017a50c9eac7b8f7. 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/TCAFE2073220.