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 0x23bd5015a643934577533074050d3532840a68e2037d5e2fd39b568f16d86a25. 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/472f2e62-e441-4fc4-bacc-b872ab9801c3.json and https://artists.proofprofile.net/proofs/artist/472f2e62-e441-4fc4-bacc-b872ab9801c3.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 0x1866b7bdca0ab811674346badf3531e1c4e8166aa51b48be12f7bea72ae26ef6. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:10:42Z), 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/QZFYY2418261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475379986012fa7e03f735083b273aaadec7972f61cc37c39981d6cf0699a840. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:33:47Z), 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/QZFYZ2473656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ba3bc6ef3a453914991de238bd0a7e033a5b37db6e6949ccb4849c2fb80b1e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:45:51Z), 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/DEZC62499315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742589a34865bb83a2237f832f1251918777ee81ceed9878cde9a976606d1702. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZHN62481283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d14c16efe142cd8abde599dbb96cb3cd096e413a8f3a2e35656183fd975247. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6P2472072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb48977aa29376301168d3e5afb254e8a1235b13f23a5b752ad2cf17940106d1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZK6F2487722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6006b1d9deed934c328318c44f66339e297f5834eb755a6691e418856f21f819. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB22401443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687c26ad42bef675bca72fa20a6cc046d8845c9aadcdaed5f53dae824b2eca7d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:24:41Z), 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/QZTB92446570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4b369fb4bb204553a7611e96b566beceac9710d8d48677fe2c9d27ce23b1d0. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZWFH2419580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10137840e82339273eb6721da7ecfb232ada56a6e5456fced017e103b4858d79. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFP2482873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811caa8c4a496126731f818a6d2d6be1f6a5092596b1111b4c763cdab795e3ef. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZC62467319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95ef6ee20cda759f42c1cecbb49b5d92d4b6f17ff42e00580190f989174dd4e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT3F42416573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840653b3543710d3e179e14b167443420abe5d3cda6570083c72132b092c421e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3F42416574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d299ed789d39db564f8c8e0199da6c375ac70d13cd2c25efd742f78999dfef2. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZFYX2532201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a2213c7df1377137028d0569a029f922cca05e75c3d783d5ec5fb14b606e96. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT3F42416576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914e94da3f960b3e393327682b507890e602a7c6ba95c7cc333706971c2e6551. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3F42416577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4935351d3a2f666f2e2b95dbfd418f729cf05ba0d3cd089e7a8db071379b625. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:57:59Z), 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/QT3F42416578.