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 0x675acdd6924f4151435347bd6dfde4113b8ac0f8a641463ea5f114faa82aa05c. 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/77f88792-0cd0-4dae-aa7a-c9a6386b5ca4.json and https://artists.proofprofile.net/proofs/artist/77f88792-0cd0-4dae-aa7a-c9a6386b5ca4.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 0xffbf9023d5da5c5d483b3c9597d98bcfb7089ad81f3f9a14869579400f19091a. 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/DGA0P2382083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a39330f81c23f2fb7b725d89081d8ba61e4ead438289abf6ff8c334fa32a23. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX872392402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5903e267f9d9ac0cd0a0f9c06e522c7c1292e3a520e2dc6616169386049eee. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DGA082315659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5cd420f8eba6ac6588bf77e601e926c7ced310cc2feb59a91a9bfb073f2f81. 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/DGA0Q2303874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405add7892dc58c89437798d961126c62d5bcfc0047eed7a7d0333cfc2b49e9e. 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/DGA0Q2303875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1fcdc436b18d6071cbb541ef79c3e0f8e38a7b0988ca1c74cba73d43339150. 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/DGA0Q2303876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5903e267f9d9ac0cd0a0f9c06e522c7c1292e3a520e2dc6616169386049eee. 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/DGA082315659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a39330f81c23f2fb7b725d89081d8ba61e4ead438289abf6ff8c334fa32a23. 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/FRX872392402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0acc566f6758099afe7216781be170748bf6b32d60838a2daab70b74881ca71. 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/QMDA62241817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca8e8b991a70ec87f4722f3045d79f8fa05f9e2c0e0b814bd4c10084793746f. 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/DEE862102897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb154a6a128c2284b1fade5c510f02ec99be47f0e39276aaa038f8ec1f07bc6c. 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/DEE862100874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4287118e578dcd03f5884f7b53977cbb75891b67d379fb3ca6cb8e58d709a1. 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/DEE862100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94be0dcab1d609340b7da793076b5e014dfb16bb6ddf98f26f341dfc31404950. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEE862002868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ed45cdb2abd6fa726c72a54a213656c5f492d578c298dd557aa8a6ccfcbcf4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEE862001810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5322deb6937ad0db4ed34ae351760c96d807d6661d4b702ec56e08adc847ab5d. 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/DEE862002304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9103af20a466aaf17f2d791d9975e990291cb5279323c07146b88389b823d97a. 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/DEE862100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94be0dcab1d609340b7da793076b5e014dfb16bb6ddf98f26f341dfc31404950. 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/DEE862002868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18a5827a573280b7995fdc319272db1f6d05bf011dfcd0fb70a1afd7ceffa55. 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/DEE862002642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5322deb6937ad0db4ed34ae351760c96d807d6661d4b702ec56e08adc847ab5d. 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/DEE862002304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ed45cdb2abd6fa726c72a54a213656c5f492d578c298dd557aa8a6ccfcbcf4. 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/DEE862001810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed4ee1c1140c83c1b132a7ec11d24570322c07989457affe9d7a431428cb2ed. 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/QMDA62241813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c200f7ff160de5f71ca8a65533bb53004ec66ebabf740f82c3d297ebb86bed. 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/QM6P42226206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bd0b7a80f6cab5b001cc1ffad81ff4a079312f28d40a02188dd75ec33ffdbc. 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/QMDA62241815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0acc566f6758099afe7216781be170748bf6b32d60838a2daab70b74881ca71. 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/QMDA62241817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7523c921ef2d0b60bb236230637aadad1940b295c8768aafb393b1c67302bffd. 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/QMDA62239114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fa9cff9891a2f99d6b52fce752b04a03868e14c25430e0a1473e0763e572f5. 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/QM6P42226226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab074d4ac34ee98e70d61442b0d4c6f28f742387f100e9c87ab40e66954363f9. 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/QMDA62241821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda3cd9685e29ce56903a03b0ab7ada11441db8259024d75c93d6ce877065af9. 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/QM6N22230956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91cb8e8a343a20d9d012b8b791c6505b1a23fa0664bab4f3d2ecc59b04dcb98. 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/QMDA62241824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cf7f0f6eb1a697ae2b4fb3564a01a71c226f1bc3559d48c1fbf85be25cbce6. 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/QM6N22230957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc166262327de445beaccce1356ea28d2c0437b24ccec7291596180e4d76b60. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QM6MZ2221729.