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 0x2b6da7e6e8ca82c40719ba33cd578180f33ed08972aacd300704b1617836fa0c. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/715095bd-8e76-41d5-8449-f18c8b943d7a.json and https://artists.proofprofile.net/proofs/artist/715095bd-8e76-41d5-8449-f18c8b943d7a.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 0xdfbfb155a3968b1e09eab2b63b9a339436b4cc4f10de214d44fe13aa10c3d353. 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/DEZN82316688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad16c839edb0fd81e84945fa8099ccda8f996a6dba6b732f0c8b7116b2aaeba. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZN82316689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0642179d86ddfa48b7fb2013ba53909a79f9954a3881f69e7dfa6bde414d575a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/UK6822412433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981fff4f49e42c0907c8767b58a3e3a4a38b82fac9ff624d708e9e97c8dc5041. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/UK6822412434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb35fcb793a7b2e57138990e6930f8a89176c5ddb20e8c0770f59e18b941dda. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAQOI2411739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa696bf7f170c8039be38901fde62cc054d6c09e0c48417d40fd10c4259774d9e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE57V2405624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2271881861ca8f82ef1f27c2348b93398ead6862b6940a530d83b9a9ccfcb333. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE57V2405625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c7af77576043b4d8c1360e47ed0e052655ec503bacf6a2746a7f6a55fa8d97. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MXA3V2408760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9936e588208950106dbf9c013b0b0ddfa881cc103a62acadbfdee32238e2887. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/MXA3V2409135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63fb4e0250b82475f9a85dc9ba4a4d0a830506639d5e2b58b554db13f805587. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/MXA3V2409496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ed810514438649a242fe82262c25255022fb6ed2f371f1295a906c30d7afc5. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/MXA3V2409501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2642e04a850cf680ed961b23f84934aae647e5d24370d34153e25c966e707867. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/MXA3V2409502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b4c904649b3b05dc130bbac54283734c2d12ff5812b602b54136a405e16cc1. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:52:46Z), 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/MXA3V2409890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4fbb5d8d38f99f36b8f5b79e20835126549ca4c7862eabbc792e074bef760b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE57V2408753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b520f71e5af8770d57960748c99ab3a24ce9188afb31ea7a2cac0b2c97bddd4. 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/MXA3V2435019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ba71f2e97f3b284ff1eaabc706ee392e733d13d30f9806f3e84cd9662ae1a6. 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/MXA3V2435399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e034f466395a8710c965c0634b6d5e189b9156d9635e25720d79b4f6cc1a915. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BGA472518021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58553e9d7ad716f2e90f37e6d4e494bf734e716d1e442095edf3f3a9a8d6bcb9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CAQOI2529229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f7d7e533c3640835550814dc061c5da292f885030185e9fd7ea6476a63acd0. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE57V2509196.