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 0x384ac017319bc0c63ffa9922486bd9562fd9184c6fff47509c234065d45d9180. 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/996103a0-51cb-492a-80f0-ae6be3d5a2ef.json and https://artists.proofprofile.net/proofs/artist/996103a0-51cb-492a-80f0-ae6be3d5a2ef.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 0x62d6a67099c771d3067dd29fd830e54013945f7c48ab7607b3e986937bff7ccf. 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/QZMEM2014817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b7505b538442d34041dbb7cd7d3e72cddc17982e9178e6dff1f4aa0a277d3c. 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/QZMEM2014818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d093f4376cfc5edff158f22f2b0ca1637b9cc136540a7db87c7e389f6e4985. 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/QZMEM2014820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026806fed1d0d017a90d15e0ba7e36065c3d6405c8092fae008c1a6b5070ea97. 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/QZMEM2014822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943809739d5dcd1f584013f411f682a16bf136b882aed255c3f8303057d42f54. 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/QZK6Q1958884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709925f3f427a9d0be9e74bb08c96e9e83b96cb9c14af9ad2f41fa1ea09fe4c7. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZK6Q1958885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda8e037ad8db1988164670b1577ff47f5d474aa1156623daf193f68a3161790. 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/QZK6Q1958886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5dec681cbb972dcd7e3939e4bd608b120b97512ead940192193ee0d7fdf0f8. 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/QZK6Q1958887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cc7ea12c5ccd3f95b38d1dac8dc0e495d8ae4eba6a4628eacfc332a95f2e15. 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/QZK6Q1958888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ade8be0f320ce378ff162509d66ceec2df5422b78cc6c170f4e17e8446190f4. 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/QZK6Q1958890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe245d49fb3aab349795448699eca3e209336017254faf6a2a7b4957f04d0b1f2. 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/QZK6Q1958891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b24bfa1602690ff896aacbeb4490e77f953f015f6b0dc1bdbf55fe11c656c4. 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/QZES51970620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16d5fbc2f2ae5114c0a3628632d415edd15649ffe64a684b57b18fe0687f094. 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/QZES51970621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9969c2be6e347856ea6b007a906ad38625f4d45bbb921e0de206cd0e4d0c425. 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/QZES51970622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b099230b6e54b2ad60787450d0f8583bcdfa96541ed5b497fde653e063437f9. 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/QZES51970624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a3d3cd45e98bcf402acdc45e9dd19fbf936d2767f784b9cde00d05e7747551. 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/QZES51970625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcebfc28e52b7750020d931e29b33162021b2124855c6d2e53806e2ffc6e9927. 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/QZES51970626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c0c4ab6311340cb30c4e6287b6051841bb1aa263eac8cc4a80fdd6cbd1c48a. 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/QZES51970627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbb0046e668730219f3c7c9a2994b9e9427425326796894f295466f16939a76. 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/QZES51970634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399efc619a431b2d843633cd9167ebb320462114545e458c8b9adeed2049a2f. 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/QZFYY2023774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20faa7018034d5b28c32d38a05d186370b626a6569722a1e4b176c5a7978577b. 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/QZHNB1915861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942933a12091afa6bf171d11e620011572007b228d5d85d4007e2a5ea6e53946. 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/QZDA71897458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7939c5b420baa7197d31c0c11203313ee805fcbd1f67af418a36163288a42193. 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/QZDA71893142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf890a158c1626ec393c2cacc98428abbbaa99686f2a3b4933b36bf6dd20ecc. 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/QZDA71813721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f7eab5e325acad8b55cef9a2bdf14080361b4f1ffc141d54fd68ea680cf081. 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/QZCE61866709.