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 0xa0f62479e6280e1aff0ba5865bf2f65da6e811d19df40d8daad29b59ebd83102. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53a3902d-e214-43f0-9df6-643da7fb4ac5.json and https://artists.proofprofile.net/proofs/artist/53a3902d-e214-43f0-9df6-643da7fb4ac5.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 0x9d6797a1dedf1ce6e3c82408a970b97fb7d18e8513a900e2a9e0a15d0d3788f6. 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/GB96Z1100375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f566807756e71ec6e732a072714d368f7d82a92dead1ad5ab835da4068793d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:32:40Z), 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/GB96Z1100378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963ad41aaa9c4574f492d5c177ba22056f5b16be9d6c47ac910153f435e221c1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GB96Z1100384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888a70e3985190ceb31f4812c1bca0d602c2bfe7e9cbc83bb85b2ee40b8d912. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GB96Z1100393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d3d951e13230e58a223566d315c960f8958549b9dc58abc9c039a915be3f54. 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/GB96Z1100395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8769275f2db78101ce02677bfbfb40dc0a65e03d737321c89dd7bb84d7982da6. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GB96Z1100396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5081571b0fe264cb1e5d3a2400be8d84f1fe1660937618291404891c85cdba. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GB96Z1100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef352d40f2d9cb8ca694881c3843702aacd62af7534a063fc5a696ce06022a70. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GB96Z1100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec0923e04928f6b1a55c53b5acfbd6ce0f8d03ba641d3e800ffee83189aefa9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GB96Z1100415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41305e63c305f3072f81877beec3ee443c0299869c579b77a501bfa5b0e8d37. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:24:57Z), 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/ZA56E1519556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292b9f9c46b3e6ae4f394c09a80321a2e471b2d09ce6cb2f584397d55c0dd21f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ZA56E1519558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890d59ed450c9f4eec38e12eb9c3b9d6e552efd6e74e7776df7be507423023ca. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:04:31Z), 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/ZA56E1519561.