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 0x7482119d70a936515e7a954b77f67bde50982d21569d002b4dda9037d95d8d17. 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/3acb8ddb-4ff1-4cd1-ba98-3ab6cbb2a148.json and https://artists.proofprofile.net/proofs/artist/3acb8ddb-4ff1-4cd1-ba98-3ab6cbb2a148.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 0x6867abc533b042bc843199427e7f0f6069ba12126bfb39aefbd1ece787abcfbe. 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/FRX452253768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c4d48aba48357844ecb5d59ce0fb263b5ca6bd3f21bb8b6327ae33c016e7e1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRX452253771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4361af48fcdb8fdea03a997f3d4b5fdf0c9eb66948b13e5af37591bcab9c4ce. 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/FRX452253772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fad29cdae0691259260bcd3a0d03c45e4f7a8cc824d5d54b1448c1782255f0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM92158484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eefd9abf6a9ada0dcfbf9c542bc610e3013c54c32d3a0489b47c6aab3d1f0e7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USCGH2243098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d64759bbf05c9cfcc2b742294ffb1217b3ecdf2a697df309db73b5e3432c6c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN62231019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00108ac9df1d9757af4eeb8edcc6de1a2eabb75c2c7336c234a9e45cfe00e73. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZHN62231021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7c7fda8baade62c598e6401eff4d1f656b844324d7af0af259dcf42c698cd6. 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/QZHN62231023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcce99cbd5773c5a2926b5a3968c354758457c4ae6e7df5bd3ebff683bbf33d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZHN62231025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa693553be4b355199ce2471358350482fa95f24e89d7d48ec0edf4b3aea45e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:33Z), 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/FRX282274248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e46c92ba089b9170e40c97006af05e62befc089e7cfbae18f9b2bd7a2f6a173. 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/FRX452352860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbfc0c9ac5f0d35f32f5229ba595d08fd87da8a6b4bd6b621af884492adaa38. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX452352863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bf347e5645b37711ac98c204e6bf95e20b04bc4f22cfb22490b8fb06624938. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX452352864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f420afef80ef4127902c5e29cc6837ba2209509ef7c2f6d1110b70dd141357. 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/FRX452352865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c72543c4828c2697229ce1e7411abccce5362f3fcc87b791d49115c9687d16c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX872328271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4c36d931b65120508df307779e60b7cb6889092f5586355e52575a61eeb5cf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA072371349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd157b0166c6fbd89df7614ef244b12134da529fac3ab7138b3dd69c5faa423a7. 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/DGA0P2375000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0a0e330c9b4b1f7760f2fd88149e9c0da51882c2ecd9a62eee25f14041f7f2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR2X42440374.