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 0x57362a38120f13ec6eeb08b4af6fd5a5d58d713a643298768a5a2f02c0df7b9f. 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/762370af-6499-4d2c-8906-70763a6fbbb7.json and https://artists.proofprofile.net/proofs/artist/762370af-6499-4d2c-8906-70763a6fbbb7.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 0x13d950b7d59b49f7c8421324dc9c18cc866513c6c0b4e79af41f9092c724edbb. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/DGA072233139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aed4f4881181586eb305e7223753d2ca15e1f30f1071fdbdc08932e36b6a997. 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/DGA072276901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee04ea905baff0357f6b24fc07ba3c7a3c10d94d6c28e37941ac90686575a44. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DGA072276912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae3e543b49e0e61d345071692dfa62969a18008050fc157f2d1c1b665eef6a2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:08:31Z), 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/DGA072281522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9e22b83537e5425a9ac54d72fe8a334d14150a675b28269a9822949cecab98. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/DGA082228237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa2684ebe0066fd0d23962a96aafd3398e81c381915e0d874d693e4d4b99dc9. 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/FRX202358222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72abff9722a45160d06460ba1ea961b3e742ac2e1dd9f801cf7e43752ad98884. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/DGA0M2330218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f52087ebc7365dd6f9488c1cc4f4a4415d5b661863a1e99756b851069bab80c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA0L2382704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acdeda5e9b4b54e7014350aacd8eb3f9ea2ad89ec5203ef0c721a60b7527575. 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/FRX282458403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03ccfda4cd78e12195a06882c3f3b7ca70080acc1c266116c5195cb55e418e3. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:47Z), 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/USHM82458905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7a7c7951a88c11683084b1583b78c9a269a995929bc811d9901259bffcda17. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USL4Q2479446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8360796d0d41239a600c0071fd7c41eb8902c46e4cd29d57c9ad7c872987be43. 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/USX9P2440453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef28de5d64c5abe4c92d754d650bbf340ac33a16e728af177808a6bd946a3f28. 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/DGA072365382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf001485d8d96bc0fb95221a3deed4fe4e6a3abac9eaa3d12109228491aa2b606. Chain 2 (Bitcoin): anchored in block 957692 (2026-07-12T10:37:51Z), 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/DGA072276899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7797e7283139eb2f216f0c8678f8bc8ce0eb014dc8cad258dc7d12cac52c1086. 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/DGA0Q2316894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e64df8d5c15b5bccf807f534f8a2dfded126b248b476691ffeb005aa4aa1e4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DGA062270510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040e2547b6ec9e341ebab935b31b3338c295c887d35c84986b92fd0a5ff20564. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:10:02Z), 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/USCGH2575746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d4499aec2665416113b0045932897fc29004db145fe4b69026dbf8d938403c. 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/USDY42544070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703cd2ee87da6bea0649f3abce1fbc20084254fecf5ccae4a2c5f4e86e1a8afe. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM22558914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6597521e6f14d0be1240f6dc7b2d51b88e3c822181a6afeb6ce5806a9f0019. 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/USL4R2589647.