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 0x0c80c751e604a38f1229247510de7832ab278de8f13d3aeb8bb82910ffdf7883. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e986bb3-ae27-4f3f-9281-c801e2b711a3.json and https://artists.proofprofile.net/proofs/artist/0e986bb3-ae27-4f3f-9281-c801e2b711a3.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 0xc6448323b22be1f26541051f6d290e514cde937da5bda507b47ea6b910f30a37. 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/GBMA22325079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d17639e2bc30ace3d70eb05fa82b769e6c17773a2bf790839be3a9b157604a4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:45Z), 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/GBMA22325080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2f004af17f90f60ce1b1145eccdfcf8d7a9056932a4a8b5ebafb3545419832. 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/GBMA22325081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a85a079405233da9369e4dd68a6bd29b2ace658d884e7960ec8cfbe72389e1. 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/GBMA22325088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41aadb9cb2cd9097476a51e7ab0252b48a6b4595298849a1bccb2ce3f028047. 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/UKXN22341571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5138c5ea4f903c71e3d7f12d4a53b83f397b7f5166766761aad91961993804af. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/UKXN22341579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4eb521a2b3b1a82ba1371a66b71ba405321ac0ab3002e15e2a951748ee7690. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GBLFP2456521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c066e28f4807a93dba4d5eddac76310018191bf8d1ebb3af7e684250ef5539f. 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/UKXN22302545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc485213dc2e61e819bb2484a2a4e31005349f9bd948b2e0674df5ebe2f22fcab. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/UKXN22302551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a6f0784a95cc30025fe345b7b54c6b9f7558e7cf2bcb980a95a8d410a34b90. 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/UKXN22302553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8651aac5fb7ecef6f655c4514f77b8d201b6fcf5cbc4ca8f14b2d9319be8ff. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/UKXN22302554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa425d4fd237460f154bae7d944da4fa4ceb849b4a919c945ea5e32334cb5b1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBMA22427143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3532423f52602b98937613315a90260da31c7e0cc56eca03fdd9930b9a125d5b. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/GBMA22380521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119418af1497820a7910ccd45b8cbfb5d5fbd844f7ce022c733aa19377af503e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBMA22380523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a90dd96d97f205c01a045aa2a23523f6990d89f0c5b37ae205d92ddaebb39. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/GBMA22380524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d106483946d8420ed3f165c60461e610905157172a47eaec1849840237d7841. 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/GBMA22380527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d54074a58d575fab5fd6993227c2695ac3757cd7460e6ead0adba0122c23f60. 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/GBMA22380525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59cad28d43dab020ad80fecc60f38b19fa7506224364a2c21118b38e8bf7263. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GBMA22380526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a20886bc53d572cf3b61278356e280f7a65020f5b9bcee8a3eb26b29f1352. 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/GBMA22380528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8d4e0f289845015b2c5d16acb8813d6e225f216d9b6c06dd2a1ae0af183591. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBMA22380530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0980027e1a99e01d7810be4bb40a43767edba62488ab3708165ae108aeb3ecf3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBMA22380536.