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 0x4a3c629667bcd774957d80ea120f179440a58d1f317bfd2fe378287d90638879. 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/39af9d9a-097b-49ff-b7f5-aafb44ce4180.json and https://artists.proofprofile.net/proofs/artist/39af9d9a-097b-49ff-b7f5-aafb44ce4180.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 0xea82a7e03d125f368cbf7437835b634cd1bd87262b5cf498ed793ab97aa6acfa. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES6102320602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d05a8e6f6555faa7715971ea04ef9b53e53f869333cac1f2920d1683d3174. 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/ES6102322501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fbc86c4f292818b8ea79b57d848ace2e602fe046accc313b6ad56433d18e40. 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/ES6102422507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6abaebfde9434aa4d15e317854998ccae8b988afa9b99be22d4a0668388652. 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/ES6102422503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856fdf6dc4eb8a3574ecc01b6d1293f3d1b4d6c6bb95269d7ec2e14788b4944d. 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/ES6102422508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89053fd8c77b0e9f86dbaa1af981ccb16d7b20367e0ba04b991c094bf9f4d7f9. 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/ES6102422509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37ebe345021332fb9267282f5a29c01865e3ba681f6940b1957c5a8628bf6dc. 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/ES6102322502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cf75d392e9d9b09deba78fe8b06e4d69f4016d5e120ce210119d13e2b45dfd. 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/ES6102422510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8928d2af76b47ac345143f91de5d3fbe60e141039ccc0cdafee4e439a792db78. 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/ES6102422506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01fee116df81efae60268f23e7be8514235ed4b92c8895715990eb0bed52c0d. 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/ES6102422505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a6000ff1e828ed1bc0f116bfce79884f85720f3a6066fe9e3e3d66e63c7e45. 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/ES6102422511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cf34d708c36318b570a56e3ffce6753ac7eab4237f45932308bddf1a8ecfde. 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/ES6102422512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062736cfadb6f1972de4d9924c8bd6681919bb22d22163c96d8683c62b4bc0e7. 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/ES6102422504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2eb6664f0b1e84265fedc4b6e235c5005c244d291ffec0a42db93815118e5c. 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/ES6102422514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f8eea8bafe83344c49a1a0160cf878d796c0f78777b85c394ed1e6aae16f27. 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/ES6102422515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daefb5e299b4fc5162f2e58bbfca744ed39eb9befe6b8d4bfcb949ef1bd9fc1. 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/ES6102422516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661b34b03d6f2696ac28b6ed510834ba72d84eb5b1b57bc0d115c5e9a638873f. 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/ES6102422517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5adbb0cefb73ffc1f6f835a8b9c64c0d6f8adca4a3d54843e8fb2d7b8f40b6b. 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/ES6102422518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb273d9258ef649bab55cce49950b49e20bbc9fb6e9ddda3f3967cdafdb528e91. 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/ES6102422519.