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 0xb55f7c70a5630de6e66036fe497377c72a0c4cb72a94dce29704c73b3b6bf489. 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/1bb1863f-6599-4098-b79b-f5d2a99bbae4.json and https://artists.proofprofile.net/proofs/artist/1bb1863f-6599-4098-b79b-f5d2a99bbae4.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 0xb602ad85a933ffbeaaefb243c53f3ef05ff4d2283d01e24ba5e87707716c1f9d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE62M2385324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f975d1a0054297ae7e21d662c2048fbe9317292f738c98108b8306513b15dc. 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/QZDA62482216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0d9716a67b6e475e1be2d3dea015cf6ee734af4a96bc21ee2d599acc749dd5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:20:44Z), 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/IT0J22100740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf5515635d1c25dde24100a21bbf08792b55fd27a1e1f616f01410bc0e7531c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFW2467249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e055b2125677222251c8abb816fab14954a0e6b74d5b2286f34692ed573d40b. 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/QZZ7S2457689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d42833725a32d88c9c64e79aa65021754069316875d05a8d97fff85a1d3ab9. 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/GBLV62421216.
The Truth (Wait 'Till I Get My Money Right)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaecea4b5a347eca093921f2fe4fcbe09444c6d0e333e600ab50ede9d400c4a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:23:46Z), 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/NL1ZN2503579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dbbab6fda0f99bfdcb8231198c617f499ccddc331dd8149be64bdf861a99a0. 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/NL1ZN2503580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ea6362f52789cecb6cf9365b6ad0f1f0af63c43e8f22d3369579a0e7dc7155. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:29:56Z), 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/CA5KR2531855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff37b4dfd68f01549e088e25fea69c0dc3136b39ed8e450ea8b0198dd8cbbcad. 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/IT0J22101000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2807f83a83a4ceb08a4b5a526265807c84ea38bd05bc743c6c98f1a4be8e14c. 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/QZTB82562683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bc8f491e522292f12ea03db2c0cd7cba678fc3d022dedfb5511eb31df8c368. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ8A2522262.