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 0x16c1ee80b08703b65917c438a59e3d960dc34fed21c7291dcb96eb4e645636a7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ac19e12-0fd2-4da7-94b2-0dd0e83455af.json and https://artists.proofprofile.net/proofs/artist/5ac19e12-0fd2-4da7-94b2-0dd0e83455af.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 0xc0a7dc0ae887c9a59c909a41f48c38e4137c659fe4647079b34d045be5c9c469. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TCAEP2040219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada1c0c1fd293169ff4a9aee2bd19bb51e6188f5119c2aae264aa756990baed4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S2094555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0379bfe1d553cc55a6dc390d184cead4e87b02465dad0303ee8a0aa06e4722f6. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:36:58Z), 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/FR2X42092673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6aa996f198238c853fa16169b58d7d97cc6dd9a9f9a07b2d4ce2f001cb9ff11. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:05:31Z), 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/FR2X42092675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611ea53577f2c699f01d99d3c19fc452625504f3b7e52a201b0987f93b030762. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X42092676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31817920babebd8dc65456345c542e30194450aea45e758cf004086eff0bd2a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:48:51Z), 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/FRS182105559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307e2f08417fc55faac3f7ac0f8d85c044cd525bcd750124dcc88a3fd20d7154. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX762226583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d0140fd690a76e21eb1a151a553407a7eaa1126d5f2aed9dbac13289b64e80. 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/FRX762226585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b8c74c5edefa2e0767e4f8360828a1bdd82245dee2bdef124a867984695f6f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMBZ92349367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe065c0c0389aa981f2c55dca4eeb38252c25596c93c646ac78ed03aa6289ded4. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QMFMF2321324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c05621c29f1c65cd18de929992ab2ae9f5489f5cd189ff035ccf7c3977001. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QMFMF2353043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e0407c2870f346caa7c51ae64081c23684a036d5b509b23db18fa9fd06bba2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6P42387852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e9ef875282f81082c881d9d9db70bc10b6d813a7584375aa387da4ad9477fc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMFMF2353076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ef1549b320bc93f9062307217dc54f7245d8f6233b201d083743f2b034efd8. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QMFMG2374921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19f3532227fa235187c9d7473e3c347584ffd38dbdfb8c2d5881515a898666f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:36Z), 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/QM4TW2489489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76197494775c13d60a3fa74c01748b848845a0b70527d4d3aa151efc02ba43bb. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QM6N22423864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fc88b34af186474b9d385ef15315cda784d6983f931368e62a65673359a891. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM6P42476623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb810aaad2e5579ec8b0d7672299b30fc8373e052bd198a971fec638fe8d9e487. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM7282479847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe200e5c1ccd38ba301623562ed3a315faa9108af3998575e8721eeb5c457e600. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QM7282479848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7665ef0478edd9ccfa3243bb683fc11032531286dc7ea007c66674719e9d609. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:50:45Z), 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/QM7282479849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e57b39051a6c87a98f438ad4328c4ec42c188e60e01050c0cd34631c3afd0c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QM7282479850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5ae5089cae0a95736db1644359c0bd15c65efa0fe96b655b860c3e5d57c22b. 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/QM7282479851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea48fd35c571ecdfd153710390fe3a2f68cf46b82d90de09f3b1a374d927fa3. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:29:04Z), 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/QMDA62466626.