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 0x4a344405ee04da48b813eb73defb142c8d3837046febda16b1efa7b766042c96. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f32aed6b-b0b8-4458-b6e0-309833c4018a.json and https://artists.proofprofile.net/proofs/artist/f32aed6b-b0b8-4458-b6e0-309833c4018a.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 0x048dcc87ae749d9d94043f5078936fc29c69e180d572fe604785d6199c462650. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA142300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4117c66a3597d878bc138db80452bca98d10ca4eeb5209b0f773dc88b7007c6d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:40Z), 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/IDA142300532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6c675a529845f15ccdceb4f3260d32b0d4629d137b455cec04e1c73201af03. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/IDA142300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa994eea8aa658578fd7e33e1bba494f7074d2d50edb71c1caa45edcc2b886ad8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:43:53Z), 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/IDA142300534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeba445ee58c34490552cf5dec8415928c2bc60266b2cddcc2026d5c4dc402d5. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:37:25Z), 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/IDA142300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7838b2bdca83f5df20caf3f74b0f14efd12b1d5f2761dd632cc8074b5f635d5c. 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/IDA142300500.
Dongeng Sunda Di Udag Siluman Nangka - Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b95ca169c315f5380541d6b90f94816580ad80581e6aa9b038c4a6f17413e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/IDA142300503.