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 0xaface4e4742cb91a78fe1c8ca9da746f28bc410d2fac7555733a6a36be094b7e. 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/1f5a2050-8635-423e-9d8e-671e871c58d7.json and https://artists.proofprofile.net/proofs/artist/1f5a2050-8635-423e-9d8e-671e871c58d7.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 0xdb6665d26385240d15188690f0e9bf2e0722967296e2b6662aa0d32a2819d779. 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/AUMEV2521232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5cb4dc6b0bc1e24ffe9792e13e8b04f8a5c7151804a4020bda03ba01e0d688. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:10:04Z), 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/AUMEV2521234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00681e2a6a0c3a9a44d2d205e1ca151d60d93eb95fbb9af0f3037f94c339e97c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:23Z), 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/AUMEV2521235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec77a08ad480ec68bc6b43d3c849c4edc6e11e0e3a8e636f7b98bda4ea29d624. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:12:59Z), 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/AUMEV2521238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3987c933b1f8262120be95447a0fc3f8047d0966722dc0967bb2aba05db3cff9. 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/AUMEV2521240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeed93ada74450ca6c5ff5fe00b56e176b70e6eced3786022565052c6716501c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUMEV2521245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738eb052e537910cf75e0792e07970e43e3505c4a8a6480fcd8e1264f3f542d5. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:21Z), 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/AUMEV2521248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7ad0698fb35a232528e1fb7b8c25121ee9712fe1eae615ead3bd8e67596cf6. 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/AUMEV2521250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7429dd7cb275bd555e3de509c593b2ca7d2f22306c90c19a3d95eecad8731d66. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/AUMEV2521251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca27d69948905405df9e36fe21f3818d0617993823049aaacc0d4f2ffd1f082. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/AUMEV2521252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835d22c3006b6e74d39099f8858d1f665bec5df52171cb3994e63e1ad8ca157a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUMEV2521254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe4f90de988eb2d9192c13adeaafdb41f87c7caf9315b78d0b1592417a320a3. 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/AUMEV2521255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd82c024f8992237d8c2b9dc9e8c19c47deff75cb04f1c0d7b42eeda7edb83a. 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/AUMEV2521256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66936c6a72fed772745ea98f5a6af1a4f2c93d0d2bc859df39be6ad647ac98b5. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:32:33Z), 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/AUMEV2521257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0841e67c68a8141f135852a9069e9ce82196793512733f8e70db2946a5eae9eb. 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/AUMEV2521258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d61d81529331edc61979a03c9d08b89693fcd3b327e38c6f2a64aa8baac4e5e. 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/AUMEV2521261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8ff52a25dc1e63359839038a752a518e54d24d8f611a830a53f129cc370eee. 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/AUMEV2521263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a849196b92082852fa5213ea9027663bd042187ff1f48e71c87eb5026992c00. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/AUMEV2521264.