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 0x73577a6e2ce1a914e881aed6a657d159f4e9faece4f5101d140f62dca8daba2e. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74a7a8d5-bdea-4726-8752-c6d7d7e2cb7c.json and https://artists.proofprofile.net/proofs/artist/74a7a8d5-bdea-4726-8752-c6d7d7e2cb7c.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 0x5890a901c5e5bb91a94da2be7d4308549f03de384ba51f04b034507b289b8423. 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/FRX202251608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158382dbfdb4c71676f1d1ead05f9bd616b05794dd05623aa8612a79e076ba98. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX202251613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71b530d62d28f1438d2ff486da1c5b95fc97949b4ab52ecfc3cde2727c54d83. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:42:27Z), 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/FRX202251616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5776c37d0ee26981220911c97e917b06199f44c3d3a31609bee769c2ce0899ae. 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/QZTPX2387464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed86682d793789583babd730ad31f19c33d9c6ae4f468b1cc6c47bbea0797e6. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/DGA0R2325507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa2f8d482bb43dfdb988c1250fafeb2cba3f45045070e2569be331c3f2b34b4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR10S2509448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf5a11551b9b044f1e0dc24df433cef962333d5523c1f020b1ec85754b2ec0c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX202560003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94586d8ddb19672cbe1788bc01f4de895ee5237126999c6cb3f1e955c81bc28. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:24:06Z), 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/FRX202560005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0032df92eaede551cb570d85904ea75e8d399f56f9692a68649d023500b978. 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/FRX202560007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb196e10ab94663996c759abc7f84b5b23708fbf14ae7293817f6934ce6590051. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:50:06Z), 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/FRX202560008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1645c7d52e92c789c5039240d4e18ee3cb13ef7d65875700c867b4340852a86. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:32Z), 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/FRX202560009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a69ccb22ee198c4f8b01fcab7c473163352285aa5a162a030db2ab3c892a5b0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX872572743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1662dc98f23639226940da06ce4884ed2ce1c6723c79fddfaa3cbf1b48ec5a6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DGA052540004.