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 0x6284cd3ab3431a38b40af541740e550d54bbdbf0c8ee4f7a0ffcf9b2f7ab1419. 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/96c3ee41-8acb-464e-b3c0-2043034b5900.json and https://artists.proofprofile.net/proofs/artist/96c3ee41-8acb-464e-b3c0-2043034b5900.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 0xe4443915f55ee3fed1d21bbdef6b39a64a453fb0053b40f931a898d330666359. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZTB62596117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961afec89730c7baf79810164e34224ff0b020a6d393a14aba6ddde6fec86e5c. 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/QZTB62596118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b6ba63e7d3613c21974503c261556970222ba3e3b17d05db71724eab343674. 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/QZTB62596120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555b39c2a4d7345266046c361b1bc4efdf08cec56acf0d7292f9f7f59e2964aa. 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/QZTB62596123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f494002b38619929e6226ea3b3d4c148a9b41e98d33ec86e87a780eb151d91. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB72505410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fb47b9b67e46b0c217d59a62298ee18def99b9e8df33f18a163f28ede33166. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:04:12Z), 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/QZTB72503638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054b569a950d3413e698bafe1be2d848d8c6fa5483d7cc030da2950360fba824. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:49Z), 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/QZTB72503639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e124529565a7e8d439ff552d7a1923fcabd9b297208e1d6f606124c0a79657e. 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/QZTB72503640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef0fee3be7169a14ce95a0dbdb4e436dbda75ec5e1d39be02d375c937f2a071. 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/QZTB72503641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514f3d57f3e6d7821951bbe3bb8c7a9cd22d5e4d23c8f3f0156fa686eab6df38. 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/QZTB72503642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7904521a060b1fef3510bfc77a776c884e03b59c122ec593bd4ec688c5b7051. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:24Z), 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/QZTB72503643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86afe9b9bfe20b5a1a3b10b95fc71d0f1d44e82043001bc93d24ebf71f03b4ab. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:28Z), 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/QZTB72503644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4394a81ef8f0fa47b03851ea8abb8fb08f622674e29d24ce51b4fa14bd87606. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTB72503645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcfb49e89298c399bc1c0bb39c27b3e7548039f3c22ecc85d3761083753f0dc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB72503646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769cbd3b26988e649995d6f702e5dd29cb826b2518ec6b7279ac1c8e439a17ca. 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/QZTB72503647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6164674c9bfad28f1a092897bfb3bdb017219c6986df98e7a8ccdcc0428af9a. 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/QZTB72565952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7707c2cc3fba3146cbb6f4e06c4ce52690672efb49170fd7cefb97b14818f918. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB72565953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81862170c8e98809c8914077facfd2c77a049df2f42efd734b1ba4cf9adf5862. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB72565954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e131c4591fbbe9d25b70e4db4ae1046aab8d039fb2405c7b9e5ee87ecf23688. 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/QZTB72565955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e32b0e7f24c339975204e5249615664a22c9e85bae439a3bb21ff9523a95124. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB72565956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72f55099d019b5331b967ad8c74ded48ea8de676ccccddd7d74e058871bd3a7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTB72565957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c008bb7c1c809e58828297453c746539aa092bfb4eb4b84a030d472191b2aa6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTB72565958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eacc29917b9f60181b5e0b9d59cccdf494e5a5d5c93d351845483539ed3f93. 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/QZTB72565959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01e14978f62601b63a928a7da2bd66800379f48371e9fb0282ecde3691059a0. 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/QZTB72565960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6094c0481c6a550ba45f8510824d1eb743370546015850001d38035eb421358a. 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/QZTB72565961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcb3213d804e8b4e09d7fe997b19f3f0306ac3fa8cc1860845fceb1d9e540c2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:53:31Z), 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/QZTB72565962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462ddb2abe89019bf65a0dfd7a09a56fd470934467b70a42e704d5f583d2e6b6. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QZTB72565963.