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 0x7d843a4eec03fe56b15efe3b95061a5d21f815fa64973f7782709c3d0216de5c. 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/2b8f0f57-c173-42d9-944d-82d1937dc030.json and https://artists.proofprofile.net/proofs/artist/2b8f0f57-c173-42d9-944d-82d1937dc030.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 0x72e03af6791b00ea5844d68800a161967f64f03d334659616d5b8aaaa8597e1c. 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/DEZ901501180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bf2acfdf496a304df7b068eec15101f06fbd59056e76862cae4eb6a2b094d4. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEZ901501190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eedba733adbf6c7cbd6963113726d59052183a12137e5d887585762587c471. 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/DEZ901501191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca0527a790ca598133fdf6abcb23319337f960c4b8137631ae61e40f3e6d228. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZ901501194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d0e52b4e00bd7283d7bdb4eaccd63da662974ea7bbc87d5579993f22b0307f. 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/DEZ901501197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97baf91d52670d6abf1c0241147ec93237d6ae151b1f70ecd318c778ae228d4d. 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/DEZ901501154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83778bede01ce34edd40a20f83afd7eef83bd2aedaf3e42d41fbd9e881be03a9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:06Z), 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/DEZ901501156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097f2963bec3a2c3cbb5a76a30799eeeb9b96bab084f7b6487e11b9268e573dd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZ901501160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc3b84449ebe80d180567a027fa152e8149a2b4ad4cb373f3b2e82663d4bec4. 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/DEZ901501161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c8996fdabd5288bed846cb808919ec167daef2786a03643eda7c7807529d6e. 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/DEZ901501162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f2d54d5596c172db3c5d69e01d7bdcb641a833892b86a91e0fe795b5df8df8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:48Z), 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/DEZ901501164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8894423c41fa8a26af3c8689eef9b564710ea4ed70abb1893fef3b0f91d6e5ff. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/DEZ901800276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf361ddb137b3ae59d927dfd1bc317f3df6b8c22bf31c4ce236a7e0f407e26c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEZ902100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32185eb1b001283ee2b3051a593b7260ae6555add89f1916eeae80abe9662059. 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/DEZ902100662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2da47441f1b0c6802831be31f8a3944f987cd21852a3d60a220f29bbdaa890f. 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/DEZ902100663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971e17e0e15f889c03674ea7efbab0cf97c07fe23cfd7ed7ec571e558d3fc93. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEZ902100666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12102e3a36ef426c83986f5bb8aad10f14833e473a812c600d039fd47e85525. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:35Z), 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/DEZ902100667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960a460f1551affb319a8f93c80ddcade075225b35cecc9f5a4e0fa59f567e9b. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:02:28Z), 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/DEZ902100671.