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 0xc8a73d2219125966b4f1c5224dcaf52e50a6557b95ea2fd1785e69edc6c28052. 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/1702eed1-2d8d-43b5-bd31-c833b78549f4.json and https://artists.proofprofile.net/proofs/artist/1702eed1-2d8d-43b5-bd31-c833b78549f4.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 0x2d9590b8d4db2433396153249c75189d4c631b677b3ea9d2c50129402f98cb54. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SE6SA2042350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc9bd12c1d7e618337a27d2f1fca9099c374194cb9dbc42a4ad11402cdccc0b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:06:57Z), 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/QZGLM2280217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a83befd50bd8d15c7c452eb7eaab6da7555cf8647e033429ff4a71197c52527. 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/QZGLS2227930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553e968e24a6d7d30bbdfa7c55af3f7791adafdae27e2396a994c64e5a163942. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZTPX2260379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d26ab71357daf176c0d773a048aecfdfa5efbc90b458947fd0325ce98afc10. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZW9K2234127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab809969e992eb2e4a297c4b73c761b02af61bd3716d6ab4cee4705a9f085e4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZW9L2256674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d009973a1708cf52c17b7aaf6614f9e82d43434bb3e3f4dd1b7ccd64e22208. 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/QZNJW2394305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2ef00926d2e6c81eda72d4cb5a65842f449dada18f82ffbfe74d6537e3c733. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTPX2356967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4295ea947aa30609da610f425f54b41bd97c7af67aca36607e6533aa012ce7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T04:46:10Z), 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/QZ5AB2433036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d670bd649ee8d80ba7134fd0b1da108b06c6c5ddd84d388f7012fa482610d8. 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/QZMZ92441365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9418c39a54a5d766d9b7a324248157ef37de24942ee98870ecac52fcc91e552f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:49Z), 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/QZNJW2407950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eb798349dc735f9802d8325ff43a20f0bdf9ace62395d6c0c73927004d4e5a. 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/QZGLM2567196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cacc0c5df3f3d64805f471c2874e06d45fdec762f1fa28dfb1f7241d79e4450. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE6XY2569985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145df85e7d2a26a621ac7a864feac5894af3e48282ef44bf3878e66e262aebbb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:20:37Z), 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/SE6XY2553243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d4b464f023ed2de338f9578a465c97ac0e9c9e487e8fc2c0161fc71b8192cd. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/SE6XY2577122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d86855faf6053db5acb21490f785c31dae27950a08058e867dfaa3b0fc004d2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SE6XW2597637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4def61acbbec06b974a53c04faca23a57384cbcb6fa1eeda16c839a754e016c. 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/SE6SA2559169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7edeff40d421973891b2986ec7e969029e676ccf6760de633a9a29313e864d. 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/SE6I32500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d3817a0c38ac78fdf441e23aa998c1e2ca1bf7e217b841b41d56378022e9b6. 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/SE6I32512707.