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 0xc1414affd10c3a3ec7842cee88e6add56c8be6a86a06e2b846f4b1f82c6a128c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85af3dd9-1382-409f-8806-fa4fc412f067.json and https://artists.proofprofile.net/proofs/artist/85af3dd9-1382-409f-8806-fa4fc412f067.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 0x7f90640e414a8f377af9fc4f67d4671ff5738a206a58f8192869bc10e5f35cd0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/MYSU10897429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1f8afe38032f13e7154376db0604d26326f4c4fe5f088464d6da1556d00382. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:28:41Z), 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/MYSU10896064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c08adbc048dea83e56aec71807dfb811444289c6587307a0856d2941707117f. 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/MYSU10895471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d10b04097d7e36d300298d5b90cb0ee27086028d8dd3686f329a7c849fa1c7e. 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/MYSU10898783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08378027c41c0199974cf98b3b8d21b3d9e1c45fd61c52f09775c46b2a11af57. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/MYSU10897967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613557253effa198cdb7e063e306e9da7dfaeed7cb3b97e8f3daf1862430a636. 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/MYSU10890304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c42127239e8454344bd8207ebb85c58afb25140234050358040dbb6caf2e17. 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/MYSU10890311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9840082ff3555eb5b2be0a64f6074e1bf4b3b9783ee3c2796470d9374dbd20d0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MYSU10897392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161daf0631625ec3757616f3673cfdbc82c74c3186a06b2dc508d1a47ea3a1ec. 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/MYSU10897394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2837746c6a496e85e9c49a692eeeafa396f65d1642795b962b2c6de1cf092520. 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/MYSU10897396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e70cf09db3a3a56a0d8e315bcd2cb40d3e3d4cb0d472d7585657ff6509d718d. 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/MYSU10890301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962fd096a914ce6b99a9342bd4f8b1a2202a57327982f9f775db3e206faa5d94. 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/MYSU10891068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054b5ed343c7405315302a45682326a9336a49bb363eb06f005bba9c18135176. 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/MYSU10890312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694974a80a2ca2e0049a1020a65efd47e1ccc39676ec8cb15d3df815fed32f0a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MYSU10897274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24223accf45880e35705bf710302f52e4130f2fa50ac0a45a02bc0d76aeee85c. 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/MYSU10890310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c42127239e8454344bd8207ebb85c58afb25140234050358040dbb6caf2e17. 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/MYSU10890311.