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 0xef904551298d4cc3acd874d245bec29eb0a4bb875d9c21ed2b27c1b5ecea554c. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0654b55-455d-4c4c-b86e-4c556964dcfc.json and https://artists.proofprofile.net/proofs/artist/e0654b55-455d-4c4c-b86e-4c556964dcfc.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 0x15afba22542d2c22293ab97b6eaa1f9ef8d422f49f83347ba2d1c0f4d6d6fb2c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USA2Z1110203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88769ba1574ab642fb0727ddda43329e23054745322d8e84e029cc1b69337881. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USA2Z1110204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f4827c09921dd424fa79a7abd5d252fac65c790de9e2a3e66f66cc1886141b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USA2Z1110205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f759983e0532c414f13a9cc9eb459f61546f6f2298c4d672e0e495db128e5aa. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USA2Z1110206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e7f39ed3289d0cbbcada0bcf45760a2155183a9ed1e2759b56b6498a7b504e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USA2Z1110207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acdcb236bf29d02109f8f41d39420e9a460e9e4b1d99af9ee9a4422f76d1def. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USA2Z1110208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ab5ab83a117dad60363a57de4c4d4e0bcecebe0c911c745841df4b792d1aa9. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USA2Z1110211.
Vibrational Studies (In Echospace) / Symbolism in Transition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848e4e6d0180930137115fcf9371adc8a26be85f043487171a4f6119880c2d43. 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/USA2Z1110262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d54588a09903e55ee535855f69a7139703cd1a18c250788ff9bf1724408258. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA2Z1110264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54592e127220d23958f5f832a6cc03eeb23e0b4b5a4e8de87bb7bdbc339617d9. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USA2Z1110265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d2e8c86903bc71fba724584f6580a43c432307c66eb41144cca419fef994d4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USA2Z1110266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe923899eaf6faf5a5ec4142dc2ebbda3010ff75a861f7ef201ff5bed66dec9ca. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USA2Z1110267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082e1aa0dec05ff02738028d094382caadd292ed4c7b04676e768f76f92fcdd7. 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/USA2Z1110268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db41bf5572a038da6e45ae8927c8cea05c68d6c866f82b00ab68b0574e8116b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA2Z1110269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cd18981c4deaad08f9386e7116e4525700462bf1d86b37322c2a33f009947d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA2Z1110270.