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 0x14afc629c70a4ed8cdfe11a9003da4f442bd66c78f33495ae88a66b4b7332bf3. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19cdbf4d-73ae-4e28-b96d-660c6c03b41a.json and https://artists.proofprofile.net/proofs/artist/19cdbf4d-73ae-4e28-b96d-660c6c03b41a.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 0x4a95cbbae7199d1e6e9af278c99823969beb70d6a6a655ba7054b66759d5e147. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRDAI2510001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d2d52f358eb65379cdefa978e7aee12238f9adf05207ec5bf539b73d4d2845. 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/FRDAI2510003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a95cbbae7199d1e6e9af278c99823969beb70d6a6a655ba7054b66759d5e147. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRDAI2510001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572341c2c8f7b7d8b2597d94953360d097e216e953fb15c4879388226fe51c7a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:54Z), 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/FRDAI2510002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d2d52f358eb65379cdefa978e7aee12238f9adf05207ec5bf539b73d4d2845. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:34:55Z), 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/FRDAI2510003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d20c2340576619e38867819f1ae50aae315abfe7e8ce2e3fb9afd46efdd14fc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRDAI2510004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572341c2c8f7b7d8b2597d94953360d097e216e953fb15c4879388226fe51c7a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FRDAI2510002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f49cbedba1a2c058ee5590e92bdb00f23eb923d246553b50ed42e2d8c85b83. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:55Z), 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/FRDAI2510008.