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 0x9301addc9d519d32b978b1ea084a4e70a77fc7a85c7efbf3d98f2cbfac1106eb. 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/9536d2b1-472d-46a6-ba63-e7a3c93ceedc.json and https://artists.proofprofile.net/proofs/artist/9536d2b1-472d-46a6-ba63-e7a3c93ceedc.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 0xf740a2dbb97488c13a241b5422ef17673bb0f410247cf7d9e0b4c7cbf75e6b7b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM4TX2324230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc3d91abe9c04414dc3f30374375eca927f50f7c58fb84a042b87dbff5161e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:42:50Z), 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/QMFME2310065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee682114e619d04d3982453d765d6159e52a612586f8630fc6f2dc71f7908e74. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:38:27Z), 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/QM4TW2428495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee682114e619d04d3982453d765d6159e52a612586f8630fc6f2dc71f7908e74. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QM4TW2428495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1e37771d9f5d0ae7ac05c5bacef30fbe250f7d70e21c7c43a60f154b011e86. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QM4TW2428508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb495d95d2364d3ef40e95b4a423f7e351b568eeb2efaca52b577617d54c0792c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QM4TW2428537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe468249d106570ecec85e04e67dadfde2184b826e6bf35f09cd2b9572eacde6c. 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/QM4TW2428539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbebde20be226042b2dc961c4e67d109501d716ff32fe50316d462bd261e2fbf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:30Z), 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/QM7282459199.
ไหนว่าเธอจะรักกัน
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d0e529aa7455d00e8cd030fa219373e21c377c12f544d7670ca64d0a068e45. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMDA72432754.