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 0xd4ca3ecd446c4f0927bfa002a8a91b410264e27a72af95daadfe7d2fe05195e6. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3d8ce9b-25b4-499a-89d2-793e99923bdb.json and https://artists.proofprofile.net/proofs/artist/c3d8ce9b-25b4-499a-89d2-793e99923bdb.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 0x158f1a6fc422fa29b86f872fc465811b5bf9760d31c12c57978f8e7b8cfe994b. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:31Z), 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/JPPC09716082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee6b18e68af156cc50eaa3094b17b996c741312f13a7e4fdaa74431e6b58dc2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPPC09716080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6800ac373ecd5e548cbab22ac73d75c4a502ccdb3266e6483ed9251a03aa25dc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPPC09716081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c33fc8605e928e67166ed20715ffdb5d10a9d4bf42bff5872dbb16e02481cf. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/JPPC09801266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4955d0eacd14272a4e2cbcff3a7ba0a9818356d29d24b59d55b33cd3f7ff6d1a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:05:53Z), 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/JPPC09801253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806af40e8f7559832982e71d4abf00e3ba368d108ee265e6b20f46328424798d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:25:26Z), 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/JPPC09801254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f8b6a8b4d952ca8243272603b320ef5cfd932bfcbdfee0433a56f633501e3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPPC09801255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621a2d3af1f1d05b239cad44426ee18ba2d73fc35a593d441c5c5a8ceb284408. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/JPPC09801258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb391cb15ead7ab67398af446a2375bc3623892ffcd42565935186a12af29c09c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPPC09801262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae82656a9e9d2ac4ae64e3e3157f625ea1812a49ddf9c66d4d03b1b50f9c104. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPCO01399002.