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 0xbd74af4953eaf3473be034f771ff1b017dac77b79ad745d93fc09004dbf545cb. 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/cfccd09d-6278-4c4d-afa1-75b9b0c1779e.json and https://artists.proofprofile.net/proofs/artist/cfccd09d-6278-4c4d-afa1-75b9b0c1779e.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 0xc7a0590ef221b833433daf383066c82082ac9151ab2c4029240eaab3b4ed6186. 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/QZTB22428086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1edd541d2c6a6731308474293c0eea0f54143a4f7c4053ce6065621c61c17e9. 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/QZTAZ2477479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675ddf21414db9218766edcc245e3e41fd7bcf156306661e59cc73babcec6d9e. 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/QZTAZ2477478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537aa668ff79bc1e51104ede4a65c8f50272eb3c30a5fb9e3152c524a9c3e642. 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/QZTAZ2477477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6617e32ff5517890f80fdca8fc0f6ee06b18e5f7e6c86483f834f947d3f1efc8. 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/QZTAZ2477476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef2d414d9f92fd8157be01b80ad3d56ff41162d3127a9c0863698ac770f9d14. 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/QZTAZ2477475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042fa30fc0e145b066cfe10ecea4973fbe9c5308cb14c215912bea160487746. 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/QZTAZ2477474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c118f1ae9f96af614d54622729c0f2bf6a3f7235a698233525937002c99bbe. 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/QZTAZ2477473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c521263df73d20a3236f3eab5db5021eea37887872da3038bd7f677ade850. 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/QZTAZ2477472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b09ed0d3b36a438a7091ee7d28bb8115b07b23b5b984f3dcf43f82a7b49887. 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/QZTAZ2477471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62413b0b39ad2ba54d9aa5f7f122cf4a6b36173c2b405cc2f565073d9b0b3a45. 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/QZTAZ2477470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce4a7eb4a5dc4459160da4ea89968fe8863f804a4d2db18ce31d055036d79c. 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/QZTAZ2476880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168a75b119fa16aaa6ec8ddf9d218c41ad402c5e8248304622925615db0bf5b9. 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/QZTAZ2476879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f65b333d3c15652c8d73d49a70bd2023cdffcbab0c2c9a6c1208f653d91411a. 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/QZTAZ2476878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95145c34293467d268140b7193fbb0e866ab6581b66bbb27a12db215221153ee. 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/QZTAZ2476877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac86668d5e8586cb8678e88b843b949a5d4e54fb3f37c009873da76484e29f5. 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/QZTAZ2476876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78be36efe69c23a3b5b64216e1f7ac59e113cb998d8370907bbe2d75dc3c2f. 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/QZTAZ2476874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a067152dbafbffb925b7c0e804f5b758ee0a9510753468314a8c353e5d14e34. 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/QZTAZ2476872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bf279d39f2689d5e3763676c063fa1c55d21d0704d7126a1fbceadc933a76a. 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/QZTAZ2476144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c51336f6396d6f54206055b6cfea3711073d931127680a741247764ca1801ab. 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/QZTAZ2476881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f0a040feae124f2ccdde9565eadf73d4f93153e35d62fb0a21e88cb4c06065. 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/QZTAZ2476895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a252a9f1f87f26162f536672d34a50b213b3c86bfdf0cd4b7dddd343f99f21. 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/QZTAZ2476894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b099d029d9bd11a85142ce348fa67db5a3f914f55602a1de698be6d694c26a. 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/QZTAZ2476893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7a4a31529d3aa20e7d4eb84641ac8f5e806a7bbdf2924c13f0579ad1d5116c. 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/QZTAZ2476892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f64c886a7a524f31d2c4a73da0d8d5be6c2ea08c3a84a835957d30be720a94. 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/QZTAZ2476890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a004bb2331f7fe9eea8ffd991c47918e8abcc75db381de6641d16cbe0cba4d0. 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/QZTAZ2476887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf132248d2b22f516562358cf484b7385bd846c8aeb7cb528f9ef6e289cbddc3d. 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/QZTAZ2476885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49eabe567e257701b4b203dc1355947da3bb12b3b61dd93909701d5214a79cb. 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/QZTAZ2476884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a483ce4c9c4bd6162b016183994c4d7293c96e9bd742731dd949baed049a21. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTAZ2476883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce8bbcb6e50c644332730a9f7e4e6ce59f74e17ba6cdb9867198a1fd9b1508c. 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/QZTAZ2476882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bbce8e06c2b5d02f1c04b398d7453e64cc5576389e55ac7c551bd25a85d23c. 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/QZTAZ2477469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08799cb0f42e2020d86c2440927c394864a76fae3b9033814dbaa01b6f7adaa6. 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/QZTAZ2477468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb90c4dac3d64c667d1303a5b23b4dfa31ab90b62d10c96b6b69b9768961c9. 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/QZTAZ2477467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0e0d9f7d7df1e5fc19b2b978539a61254c9e656f9bbbd362ac1ca35e65723f. 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/QZTAZ2477466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9035d50123fb91e48d4fe287a0171f701bf180c10f9c1a542416c8aa3e773d. 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/QZTAZ2477465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e44ee06e86ceb27d2f497d08d7104228d0513548638aa2aa74d99c110d0abf. 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/QZTAZ2477464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841dc8bd5864be32db5083b3ed3259789c1609dd78fa443a147cf343a0d48e7a. 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/QZTAZ2477463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737f3de6105b0752dbb3f67edb1ade85c6a21701337c81ad6d3439e8b8052b22. 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/QZTAZ2476915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf321ddb0a620e99c9dd5376701f4273f2df97382acf34ce2ecb540bfe7288ac8. 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/QZTAZ2476912.