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 0x482e62b98c3ba912c55c423954a8865435e1e3c457411bf285a44610b9ec9f1b. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/950bed2b-e878-432d-80df-865efd82fd87.json and https://artists.proofprofile.net/proofs/artist/950bed2b-e878-432d-80df-865efd82fd87.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 0x1d5b912bcddd2960de4871f9423279bfcf3301812bcd7f467086367a7c165fb1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:38:27Z), 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/ATCU32200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27341acec1de65c7d1b32b7a32c792d0070d9a5b93be0f02fb6b285ee0d521a3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:34Z), 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/ATCU32200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24e33fa933637596202a3017ac2a723d2a5297270a14f15987c6ce397129558. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:43Z), 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/ATCU32200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745fc97747058a3ff324a6a0606235b37d9fb6f2e23588b0871e38a38114caa4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/ATCU32200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45479dd082c5c747cde73de9e9481fcace1dccfdbafc289fedaf47d92a9f5ded. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:00:33Z), 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/ATCU32200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deb5b443e7ebcba90e06452eb1e5239376f6271e168b9a1b225816b9b093b00. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:55:14Z), 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/ATCU32200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cedbb8969e05f5f003f066c76316dec51907654da1a2086c4695ff2bbd68e88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATCU32200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa74eae386c80261f8b9a270f9c0cc6aefbf7c22e71500f5c00437335d3d4ba3. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ATCU32200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1c62563fb4c0bb87b2b06189b7d7c5e4316b5fa3627e87c84bbdb9402df5eb. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:42:28Z), 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/ATCU32200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3a2e4b98fa5a38d32b25097eefd712891b391900bbbf4103c47609f4ee05d2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATCU32200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f8826a578298aa7fa294a2503a7ff3b74ebc9bc4438b831769178d9dfdd7b5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:48Z), 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/ATCU32200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5d7587aa9495289be2340fdf7f2a1a515ce23cc3cdaf106f07da8d862ba7bd. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ATCU32200012.