1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc12af4a58394a119dfd55cf0a30738fbf719959b5fec10e7e453da5dcf08b848. 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/2c3521f5-205f-407c-b2df-22b8f8026ca7.json and https://artists.proofprofile.net/proofs/artist/2c3521f5-205f-407c-b2df-22b8f8026ca7.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 → block OTSBitcoinBlock must exist at that height 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 0xb3790338660c41b7008748767a572cd356aaa0c1af30a6cc55282245f7bb771c. 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/PLI363371450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9474f23e612eb214d6c8d60d87d090be16f1fa1627826b8ff3783714b5ab1fe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLI365628930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63488adad4ab40ea958925453bb56e4abcef7508b0ceb7fda34695877c20520d. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/PLI367759020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c50f75c19edbf777a22e2582235ef99d7208518dc12477db23136efebbf98a. 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/PLI360319360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99ecf00b426892dff146b94b0efd9ab739614de6585acb2a611e902660f0aad. 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/PLI365548220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c50f75c19edbf777a22e2582235ef99d7208518dc12477db23136efebbf98a. 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/PLI360319360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdc394ed6023e0c01d9b21dc6014ed8924531e01fec1d0b44c62a3747bfdc00. 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/PLI364386390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a998418f7131a852a44a6f0127371693cda6975ca511f8a238114326129e8e4. 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/PLI368529740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20c50ebed16f14c140cec3b6577064fc86cac842cb97af852e69f58863dc237. 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/PLI365548240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63488adad4ab40ea958925453bb56e4abcef7508b0ceb7fda34695877c20520d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLI367759020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc943a382bb09546c2798e87d679cce24a608c56e612c65b4b9b1a0b501f4b633. 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/PLI360083180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5783a6b07fde8baa471744a86cf9e1e2f6b8e0c74280961d98693c05480421. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLI363922000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c2fff17f081614ff52b18237618a83a6aee9b29381e3bbe3a6c1d29d87946b. 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/PLI365548330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f63abc590e8b480ee40e801b4f2132c68bf0fabaf84862ca368717b318944bf. 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/PLI364724850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992a2581472fd45d1360d6c93fcaa8fba69be45367e7e8a9679f35ba4915f456. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLI363921680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a720ddc4bdeb548c5da3fed0d78924ae168fdea789da84d0508db3761b18d7. 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/FR59R2275879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf7e5c0a7065c22ec31bfcb6cd1f90cc7ea25c0788c346c90bc74af53d1ad83. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLI365548340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ce19d0bc3cfe782d6e3223cfd92f4dd9469344fd0744b57035cef1fe0825b1. 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/PLI362525670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ca0db434e5f81f93727224025605eb2d9ecd4f29e7e97e0f16558a1c352fc3. 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/PLI363460650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a817c782d084dcdfe188584ee292ed4ea5746512d35305f61c17ddd159fe91. 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/PLV402401810.