thumb|right|250px|Topography of Iran thumb|250px|Dena Range as seen from South West Dena (in Luri and ) is the name of a sub-range within the Zagros Mountains, Iran. Mount Dena, with length and ave
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 0xc20d967dd1230e9236ef7a5e0c26198209158677f1d48aeeae6810483f817e0b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f87429a-67c8-45fb-871c-b2b271176746.json and https://artists.proofprofile.net/proofs/artist/1f87429a-67c8-45fb-871c-b2b271176746.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 0xced910154baed892d728aa9a21ee92d10e817a12b519f3a86a27d112e76d0eea. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TWD971800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c70f5322af58b87fb6c383a11e342e0c86e9376dc44bb113ef6138c50daf68. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:33Z), 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/TWCC31801857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15058bc806603aa51ba71fade0894019c71cfe0aa16f5c2068b79e492350b4ac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TWU712104569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35672defd9d8cbe4e9267bf4b721e72e49a95eb74b224911b81146d01b03ebff. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/TWU712201774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a76c87687ec79380527a9eb3baf0f61efc92ed553691aa7cc642fe0479f92c. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TWU712205768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da5f5197768f71a536579b6b8b21fa63f899d8a211599ccab9222035fa95810. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMJG2408564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6439c7ee658669b427a89d038764537d53d6b604c6c7407fef43f014443b0bc3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWU712301559.
完全省錢戀愛手冊 （原創劇集原聲帶）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82566a74562ea7e3663d06c882f5d02b9fb2f34af76fd7413fa0f2c779e76e8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWA532400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec0d7bab73a17a6cd347dbcd83f573ecc0c32c3c387df29597ff9900d3b84f4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWCC32121208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a61a635436d1b845c9547965b8056eb1b7e5cbb886f3fa0c14860d0d203a62. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWCC32200043.