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 0xfc89e1fd1b047fd6846c1b7e2c1ebe5d63903c61ed95db341c55400a49e85afc. 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/90f567e7-ff05-4a25-b00a-24c31104c9d4.json and https://artists.proofprofile.net/proofs/artist/90f567e7-ff05-4a25-b00a-24c31104c9d4.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 0xfa45b1cf724d9ee49966f9351877833c6405959ea64ccf78b1f34e567a1baa2f. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USA4D0716405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4147f3b80aa5669ad8bc4ade9567411aecd515dfe75fee701bac695601f4a61a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USA4D0716408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3331a80dbea77c6521dc73e917d5062f84dc823538045b482fc384ba9b0d7c2. 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/USA4D0716409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd701c371ab7f2f7dd08393bfc7351ffc04c30a7e6a1c2cdb41915ec0137d512d. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/USA4D0716410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ec7bad2ebc7035e384f76fb3494265b2f6fa4980d55d56b9539c7c891c2a82. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USA4D0716413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7550531c7101fe46a75473383036f886de39f75c950c77bcc120312b2c109b0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA4D2216414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eec959e1c0843f5714be6ad08f89ea014bbfad2363a9c0ba14d46a3df5f955. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:59Z), 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/USA4D2216415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0e6dd9c78e0076782050b2cf1605a0cd8167b43b004d75bc56ef1b6a680260. 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/USA4D0716401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dc916e44e11127d77106ac9505c1e4cdf7880b188820d38a752c6ff825a863. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:58Z), 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/USA4D0716402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0018337dbe40a7659af61c284f6d2650f401ff8cbb5e9b591e99b491e3bd1763. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USA4D0716404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa45b1cf724d9ee49966f9351877833c6405959ea64ccf78b1f34e567a1baa2f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USA4D0716405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a155a608ca81a7e684a4d964723b210e64e336845b24b5d4aaa40d0ab4bb892. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA4D0716406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e935823699b725db4551898cf39e53716586f4a4b8dd35be3f694b56874330. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USA4D0716407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4147f3b80aa5669ad8bc4ade9567411aecd515dfe75fee701bac695601f4a61a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USA4D0716408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3331a80dbea77c6521dc73e917d5062f84dc823538045b482fc384ba9b0d7c2. 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/USA4D0716409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af2ee9d15fd532c2ae8621ecf9e8ddbaca15430d0eab013a68124f03b8ee05a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:36Z), 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/USA4D0716411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539cf2696150f17c8904cc5afb300bafa56d9b783a51c51c972c110557609455. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:13:21Z), 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/USA4D0716412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a6cfc6ba6c629749b87d0410eb1c0a1c7125c7fee807e505c8e2b19fda3fb8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:43:38Z), 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/USA4D2337504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8701ca7bdaf6307c2889615d7a441c91399227eaba2355af14029ec66d9d28. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:19Z), 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/USA4D2337505.