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 0x9e88be780e27d297b17288fee1e66c9c9eb1fbaae90c83d0d08140dac7bb2fb4. 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/ebb08490-4f93-499f-9cd1-ba3078d374c2.json and https://artists.proofprofile.net/proofs/artist/ebb08490-4f93-499f-9cd1-ba3078d374c2.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 0x7144ae42f178a2b28584384434cf56a4dda95a3a0ef5bf7de4f0ea94802a7215. 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/SE5BU1725046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97abdad3010e2b3996b57af91712ce57eda3ee54860017ce2fcecc5d2468840a. 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/SE5Q51829011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c836c86652e8d09c158a9659d69898b59fc91fb11b72b29e8237aaaa96f728. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5Q51829114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2abdcb73e3089e1fbe40d9dea3b9b9dce04feb40f735be2d4beacbe57be028e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE5Q51900833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4200d5b5909138a1bb5ad5661335d224fb4efe5b3c198f6420bc32468d822d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:30Z), 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/SE5Q51901806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3a2b0361152eadf9f4aac3cfe0a5acf676790092d689b7424d9f9827c7f245. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5Q52000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da45261962cbdc68766a3d707438f55f80d419ffefc068172fe4bcad6be5be. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE5Q52002237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9f45984c22ac4c38a0abef1809829b7061dde1322c6f8aede29a316bb7c853. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SE5Q52004164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89134ec8e4215b455f02acfeb1e0cfd4512c687d71d05111dfb6f309d067276. 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/SE5Q52204180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5110f9238e1b65aa068759f5d9a6927f045e479431464d88eacf2131ff14ff18. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5Q52302016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad513e1ab2e6317623c612d05a32b31627d860d3d8cd6639d5253a26cbeed86f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5Q52303143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4a1f89ea81ca4325553ff40277696a06a6b370a6343f6e35e00fe3b6f15bd7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5Q52303144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c68e9b788ba214be356145b09b6c5c2fd1cf24c2ef39b027a58652fa52fe411. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE5Q52305043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02283f58dc77a749c3ec3137e335a46378b553ac1e1fe98e505e3e039cecb4d9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE5Q52400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2c06b9b9fec651b54a3b0259925fb1d2d7e0fe092924fa0484058591967f14. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5Q52400399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bef1e2c51be6bdb6a37984ff98b6a05dbe1010ed3571d281a46b7a4ac769d7. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:08Z), 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/SE5Q52402830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f436d6d2224b005290f181ed3552362d0cc372586dd985e838cec4edcee5eb. 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/SE5Q52403114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb028b219fe380493d653a8daf6302b9442fcd679f0fbf7931901c2c30fb8b7ea. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/SE5Q52403113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b7d022c637911185520898a807680d4b2998d6f242f73216e9341efd818179. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/SE5Q52403675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c362b6b8972630953e0eda443facdf84b222664444ea6c6da8d74bf94b4b510. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/SE5Q52403673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc01b31b79187f27e13c4455cfe537a0ba8a8538d93c6727d3752e2606d6d13. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:16:43Z), 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/SE5Q52403674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa071fb47aad2a605388ac6a75618acbe7ce710f58ea6eb610739ec70c9ddd6f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE5Q52404007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5673fdbac04e8873460af75ad94a6471a563019a4924a54755d64f9c0d91e350. 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/SE5Q52500550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e438d87d52b665fa8a842b7f0c2e5b329a1b1db3098c9d9a0d48a0e844c1242. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE5Q52500551.