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 0xb2b3b602d7866c2972dabc67e6de88f59e1495f2c8c425205a5af216412a413e. 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/3ef4355b-bf74-4211-91c3-2995970c8112.json and https://artists.proofprofile.net/proofs/artist/3ef4355b-bf74-4211-91c3-2995970c8112.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 0x889cc1d82c224dab1ad60c63a4d12844a72af14714ce4ec51144c859e38b2ec1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:26Z), 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/FR59R1654353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b824054e0d0abe98f5b73f6f5aa2812c48689197ce9bef71624ff7e0f7e19a2. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/FR59R1654358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2750f63776b88a3e3f4fd466a5a4f7c89f00babfc078afd6e6c2fdf6b44b72. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR59R1954607.
Live in Concert (Xostovanutyun Concert 2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcb5dae29209c9f2c6c0c2a823141e1f50e16658744822824b1705a93f31589. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA7C1905581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ba7a465029100c520f5b4c09c8d7dbeaf2d1ea3c324822e96b7e98b6ec72a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:28Z), 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/DGA092348626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c144cd01821aafc1b7d8d6b545869363a0912faf61e9694c2a7bc61fb44a62d. 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/FRX282406369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3d7bd5104ed021f6760a820a7734817dc1682c1cbb6e3f24fe28e64c179822. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR59R2598807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0092f4648203b6bb2098a32adcabb200f403c1edc378db8c2852175016b6ad21. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FRX202553433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4484c23e08e72ea10e7845dd5c8ec385b864a7732aaa9837de32dc202d1dc1f. 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/FRX872529480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fff7079c17e793b94a774448835b1409568058b2aaab134773a6510818077c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA052599265.