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 0x190b354b513cdd1aeaf0f650bdb64423e27f3f8895926ebc3659fd4d739fd298. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2bed99c-009c-45de-ba39-4d0288160607.json and https://artists.proofprofile.net/proofs/artist/c2bed99c-009c-45de-ba39-4d0288160607.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 0x457ddffd9acfddcf6abc56886a14e14488708dd4949d931e1d96253da85c991f. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/UKEX32110812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849411c3f51d3b17ab1cf19784b9dee76cb4e87e85f8cd1af00f95c5962ca936. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FRS182105291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b0f5d4e630fdb34ae3c0c98d49ec6e62acce05ca28ae02c6a763b4a6afa18c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRS182105292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326a5fa0c32d910fde0c9b76dc3f72b7ef18ba5bf968514d637a8ffe46be9e30. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRS182105293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55457123385ef7388aba60d7b56598b4e84581c9481f7eced825be153f63a7f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42227599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cff80a3efc1d139e773239ee59373119728d53a6bd39de5cd302200c5c965f8. 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/DGA062257548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17c1f99a43136b23744c068476957a7ef1f0d598a4d8d22a5cf2b1f572876f7. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:29:07Z), 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/DGA062257551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc365023bfac82bb463ae1de98c2f68e00b3170cb81775644add4d10cbd1aed. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA062257553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc175a36169542cf32435c5d42d3d9ff7c01743f4d5e5f14052163e6f743a64cd. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:18Z), 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/DGA0L2356900.