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 0x60485c260f5f0506485a2d643b81a2d91fdc4e04dd14c63c80f5c904f1c7c519. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c36288ac-b203-4dcf-9b5d-6fb4e6f5f0c4.json and https://artists.proofprofile.net/proofs/artist/c36288ac-b203-4dcf-9b5d-6fb4e6f5f0c4.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 0x8d116806b045a67527405ad2eb3547f8ab1c0cfaf152e726bcbb523e271e5f4f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ROGRS2500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0162db41133e8264e23ae69919a3c7362108681fe635c3046e48aabee5e7fc1d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ROGRS2500346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb217f9facc6d792c606aaf0fda7358948dd9948b37891f9639241a1b628c0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAGY2367930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903e79d74aa928006e8351a21e6fa6e235ffa81fa2d320ac7c15740f2c23d79. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ROGRS2500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c8524052eb6aa82ed070d0b2bc649305386bc3463bf1147a847289ce9ef02. 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/ROGRS2500348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbeba3778e82f12970bc98fe32a6094c90c38a5ea5a28a454c4b9d2ba81db25. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ROGRS2500349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b02cb1966b9c3c6fcc5a73521afb183414e4ca50337ffbec8aba220e866041e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAU2225996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f0feead192af6cd386bbb2227385283971236138401963d6e362133066afe. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:29Z), 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/ROGRS2500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ae25f59f638c961c62d8fa172a30a56da674b1bbc703d333a8db56a603129c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAIJ2410521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cb217f9facc6d792c606aaf0fda7358948dd9948b37891f9639241a1b628c0. 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/TCAGY2367930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4a381fd4c044a3bc3f71970d806d509527b3cd91d6cfb1fe80a2311b3692a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIJ2411247.