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 0x67e0282b765d5db797c21baca37cdff3c1d2a53a60ff25320d6244b4aeb29ce1. 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/1e1be369-e6c9-4c68-9d93-667081f38642.json and https://artists.proofprofile.net/proofs/artist/1e1be369-e6c9-4c68-9d93-667081f38642.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 0xe093dc8461c9e319e8e5874265b8a8b28f233310d3663dabbffb22ef2a1cc514. 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/FR96X2306865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8ed92fff59a23e4d53f580283beecbddf8d92f845793c0b0451015b639f9ed. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX762385328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd04c2cc357de56c00ed372ee69f2f12f937dae25df71941d9a6fe171f5bc6d. 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/FRX872355847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9cc66a052838e6638a4809e93064a29c6d1a9f6276dab4c000cbf4586ede66. 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/DGA062317826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd52a44e387b4e4ebdf626428520fc344330e86e6e22875f33ba566b420a7b3. 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/DGA062384211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5215d42de7196f7af5e6463c3a7d326b9c37db6b6c82aa1dc0959f3271810e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:52Z), 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/DGA082334790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c185fc0ad4c678c13e4d4e678f031b59b68e7fdbbc3f8644d270dc81a744d1b. 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/DGA0H2311124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028de741bc992c64d470550db5faf4a8b5e1b5f0ef9ae3d9dadbf1187332942d. 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/DGA0P2330891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767e03153547245bfbac4fe566c23c3cd8dc07d087be5df479935a1eec2c3f8e. 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/DGA0Q2306876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf02caecc8d52ae143048bed43756e45a8daeb398e672900fdca902d31b15e9b. 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/DGA0Q2320423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d85e908c0435c7557b770f0ab2aaca818e8f560605df8634c915917251b388. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DGA0R2308570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e8800be87584174243498672de6b63f81580d3982315aabd1c175d3adc69c9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:32:59Z), 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/FR96X2422459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35168fe2bf1f14aa90f18a165f354e8e6d9e5e508eacba73f41115047efc175. 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/FRX452469090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7fdeb0c12603b2e367a6284cd4a8a7453f61cc9c0c4bd604be166fa69dae58. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DGA0H2429963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0db36824ed296b2cefce48b5f3a199cf8f1b3fcdbd6298c78c79c73810e69b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX282599196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2b844cc7f16a09e936599a76fa751368ca45038ea3864765a8a79220ebb3f2. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DGA062554857.