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 0x9f90971b324f70b560b91b6daaef74aa4126e7033a29be05797f128260bdf095. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db37dd8b-e086-46d9-bf15-c4f272dcd30f.json and https://artists.proofprofile.net/proofs/artist/db37dd8b-e086-46d9-bf15-c4f272dcd30f.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 0x30b6224b2385d71d9940b4ef6433ce2614442a78de81ad25b72472fa4f25c5a3. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/UKXN22417856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06eb7d51be28454984a80f52d0915fa5fe1ebfc6bfe9c0c1411946fd6ecaa4e. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:41:54Z), 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/UKXN22417857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407d3dab4d285d7cec3a2edc30a4f4e93c1e7ab80f0726d1ce1f703fb99f6ba6. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:44:59Z), 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/UKXN22417858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77d309e47bf817a07de4e4903da4327c95c476a72560322c7731ec0d4299c77. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:04:03Z), 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/UKXN22417859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01a1ce4ec0145dcd534bad95a65c4b7d809d94279ed2105270a12ebd833b81d. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/UKXN22417861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9ec2625283e2652bca1664250070b6f870ebacfb8a8d30f7cc0f990b166523. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:01:24Z), 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/UKXN22417862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28917c12a23b79b661bfa5dfbb833d9f7cb9eaf699ce56aa19b4f2cfc51d761. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/UKXN22417863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2ae8f7e3ef20fe50df1090345aac37155e415930fac57fa1dfef95b594b489. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:51:28Z), 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/UKXN22475955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5460e91b8dd8252612105e4cdfcd11aa0bdb6dedf54c9dd5237b145b563d9b3c. 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/UKXN22475956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d2a57ac54dc10f66b884d0dda013de9b28e2df25a0dfa1a2d89b4af83be032. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:57:49Z), 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/UKXN22475957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cd53bd67a29a252d36b7f986924a55a951bf71ce79ef229a11320ea1813bb1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKXN22475958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd968dc4fd87810d3247b88aa4ad47a0fa598640097303c85b49787e748abb054. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:38:24Z), 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/UKXN22475959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f138bf22e3a92495e324164fbf578717d5cf81d139b182a5940fe2d539c722c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22475960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99add03fe731720572feeb6e0f37ec687cb0c7639c25713149d6696bd7753a. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:39:48Z), 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/UKXN22475961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33192247553199811daa2f048bbdb45a266af98a7ea2f39adb2b2cb8c9724bb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/UKXN22475962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa672c5b09b6f3db0e25bfa7e3daa27d25d73081d5371b4ebd6477f6f3930338b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMA22440459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7063d3aa1b952e48d3483e2787061c14f01508652cd92aeab3771a6fca6eba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBMA22440460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7968d8e117b382f4289c0ef4a3031d0f4be37fd265209e6df5ee6c2ddca2d476. 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/GBMA22440461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b0b34d50c021c4ee15c6152d988324098b0a5ad21dd7d3fe4c003b9af72fae. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GBMA22440462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ba4e22d4da1be77463accecfbfe8242da928ef98de720a5a7bb88d6bbfbd2b. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:05:13Z), 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/GBMA22440463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315323ac9082869da4f0c7e9ed121b78b0782c31039e226f21ad5150232fedd2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBMA22440464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d5d0ba070bfc40d04c7389b1352a9a591f733c2df14c2f0ebc62a666f1c7c1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMA22440465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf840bd22164898d58044b6b29f9d507fd27e2ae15594ed36462e672cecdb9851. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBMA22440466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5207ddbef4c490faf9cbe3a3f870e73566d5d67a0ead419ae5620bdc725a0ea. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GX53U2375146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50931fb2fb947dd2056130aebf00de076775a76796663e8bdb8e42ac770f0e84. 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/GX53U2375147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3ff03ac8b185bc1fda74ed7a1f13f8e828ba88c60de03af1517153a8208715. 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/GX53U2375148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9480abd072a676e047bf2264f89aa1222e1a99dc3e98d829b0f862a1cdfc80. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:58Z), 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/GX53U2375149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b64387139100405e47217c812ccc985ecd4ba9d0ef178eb710e30fcf1c4076. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2375150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efd14f9c08d74a6c2f34bf0644ddc0e245a19e81428eb559f9e39de52c6afaf. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:25:53Z), 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/GX53U2375151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7941097e176aba785a0fe3ae2992b0e2df669389098f0221afe5c0989b14a841. 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/GX53U2375152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10473f7b2456e71267c90bd665a8cc26b5a2d5e2f2bab02f987aecf6516f6ea7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX53U2375153.