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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda319295df488b21c329f145982d26cd5acb41291191a5061f7093ad1b4619a. 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/20e51c37-2186-4fc3-9ea6-84723155a410.json and https://artists.proofprofile.net/proofs/artist/20e51c37-2186-4fc3-9ea6-84723155a410.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb9d864f99b95814756a43caa3d25f7ee083f11134b11cc6b650718fac89c35. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM4TW2436411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7129029612dd007319b8dbbeeb1011d198c3342b7a68d55b2951e51e630960f. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QM4TW2436408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134c7999e9b475a7dc3afa5388d6a810bcd34569ae0bd2d73ad448db22c1b978. 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/QM4TW2436405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e5152871804847c645caa355dc61ab88b458978ab6b6de046b6b74b193fc2b. 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/QM4TW2436402.
Drags to Riches: The Unauthorized Brooke Lynn Hytes Rusical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a95017d134a6b1a8cb7c3f1980f6a8ef30659f94d4d3e62653b63050766b91. 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/QM4TW2402417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774d5f15df86186043975e3a5bcf64aa8900285e58a72bf04c612bc43aa9e72f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QM4TW2402418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83e6df69240bedd881bea1eeb8b69bb54d71196e558c85336fead26af3938e2. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QM4TW2402419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37701eba6b92b9e7f19f37fe2facd88e26cce54a86d3d35d91e1c4654f6b1a22. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM4TW2402420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b11523a113742a2880a5660abffb69480244a5c04e4620894d596fcda37051. 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/QMFMG2320828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac58911a29b24c824c6bf493f338e91203046376cca09db29be0ab2f4ad84e1. 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/QMFMG2320837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb555a25907a8e73d3a3d5ceb6c123c3dd3adeaac026cd31251e905d91297bcde. 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/QMDA62201885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f10f8be15e0a2039eb2d5b389039eb43d2b9d29e23d1babecdb3b4d3979f2e. 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/QMBZ92277906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6e4fe3a30ad8bfdcbe48409bf9bcdcb2aac2b4be5f35f9ccdb6392804f9d7a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMBZ92272435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace124967cf0db0d3c20ea6b0d8f6beb142a77ef89d7683a1bceb1a63908e8ac. 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/QMBZ92272443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a01ce046d788931ee34d35eb5f6e522f9c27f496fb9352d2b7d9fb47c128208. 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/QMDA72144234.