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 0x44817f0635f740ee86a4a5ba0ad54902c0e9692a64c1b1b3d3499c95be07d45d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4067c990-ec9c-49ff-b679-6720622c6602.json and https://artists.proofprofile.net/proofs/artist/4067c990-ec9c-49ff-b679-6720622c6602.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 0x7d40052167172b4f2e1b07d2ab48de96b1fd4c0ec6f1b124db58230626a53f9f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:35:38Z), 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/USC5G1400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b17dc24c29da12b43426e29ba490ff92141015b4e6d733aab60dfa0ecdf771. 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/USC5G1400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87ac746109b79b044ac6e73e0b05f9573a71e5ccd4cc4414a7b272ff267f58b. 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/USC5G1600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acf552f2d9c2ad89567c0809465a8f113f5b8a513a8072a8a400923621e589f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USC5G1600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b8502de3b456e3ba743a40ec2a17f26b8b210d96d9de47f149b1a9a5764c1d. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:06:15Z), 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/USC5G1600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba8eb7392c77df2f1d9a2800b4291aaacdff5331514e7d80d2b7766352747c6. 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/USC5G1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2bfeeae0fe40fe1815008a1badcbdcfebc2f1db472fd190783f9623de147fc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USC5G1800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0a6d1ca9609d19429a3e7b3c01a405c395291fe8f54b8eb90983f843c55821. 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/USC5G2000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e41487a8e6afdc0bf45a6ab95543089728a1c645e6623d4c179d77578806739. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:44:53Z), 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/USC5G2000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe415eab943f98476c78c1be3dd077f175f2caaf337323e559c534fc5438c9815. 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/USC5G2000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f296c6a6208c787db2165d75697a687d544a4138199a093f35b11085e114fc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USC5G2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdebfed9bcb686750a3e0b92ac37a292f1158d1e2c7001161c7f6b8e447ecad. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USC5G2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f505fa18238c889f681e3f4c183ca3ccc23cfd444d3765412c0b743b66309f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:03:40Z), 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/USC5G2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2101e467d7374c4c75d0e80f23db80e65559b47ee57edec451c9f9b5d828cc50. 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/USC5G2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76700e4f2606d98e28c6bfe502e26f3611d52097fb4527fab146907669bf7bf3. 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/USC5G2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea671c9b1622d557f66d2e09b6edcd95c4dc375f6b4779ba82d65f57330c8efc. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USC5G2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fa3aebe87b0cb588685c94e3190f87a4cf9365e12e2921957b8490eebcb9a8. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USC5G2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6478bad7a79e37a29db945b2c7aafe427955b1daf32e3a63856e05f32475916a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T04:00:45Z), 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/USC5G2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38319f1fcabff2704944654594da529633db02cbc4578ea87a2fd811718915dc. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USC5G2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe666c47956f764d7bb67962909323b042b1361635b570367e95ec5649d38f37b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USC5G2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2773b60a2d2005d3f86b1955e2e0b53d917f174b64cbe0823f8be2b0666d56. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USC5G2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3990b04bd6dbb737b0c6022d36bf624e7d90380b9392a1ca8f2dfecb00c8fe3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:24:40Z), 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/USC5G2400008.