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 0xc1f588136ed1f7554c514bd9b2810f7f358baefebb1e2abde627da291ec796f5. 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/49dac3d1-2351-4b06-8628-b6fe41ce1c1a.json and https://artists.proofprofile.net/proofs/artist/49dac3d1-2351-4b06-8628-b6fe41ce1c1a.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 0xd0bbef476a1a7db7b1df18c064a431fc0b8a165e02c158c05b4578fd205188de. 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/GBH6G1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2169a0d3c53dd317649b9b2384c4e78485c929ae984db290504774fc7fac8ae1. 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/GBH6G1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602422eabd9db88e4c1d59144ce0f688a36054dce5fc8df4052c5aa86a97c6bf. 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/GBH6G1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac9247af30ab5eba077b80ca11b96f192c74f3e028281def41199a05f5c7711. 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/GBH6G1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe419cbd4a9e828243b95babfddccce37aa0591082d6227227ffadbeb2a8fcc09. 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/GBH6G1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1084e81327c26aaa6842ceb1e2e012366b4672d79e85d7c844e416cc401bf205. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBH6G1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9cb2d9386f588c432ce9f5d4f7c50495d2eac6c5f17182d7a548998908b342. 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/GBH6G1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ce1f07f7a194212c95f34197e83077db172f70b00b2e43b60303698d416764. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBH6G1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f85c8434ce208be364b075c7d1573d246f9a97d0c3d5c0fddaad358138d7bd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:55Z), 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/GBH6G1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d341402277ed66fb9c14f2f71f2284b9ac3bac2d80b66b2196c49f929e063eb. 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/GBH6G1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c70039c3de01374bc9c5253540327c632a186ae489a2b7889b0355a4dee9a25. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:07:58Z), 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/GBH6G1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546849ecffcee0d3709b1534a71acd3cd8926cbcf99ec52782dc9cebbdb29f5e. 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/GBH6G1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531900edcb439b1f6862e5e4631331a2c176564d68d54139bb7b041c786e38b7. 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/GBH6G1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823772bc57c46f0d595c4f757eb689c674f902a67594db59b3913c8774606f96. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:04Z), 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/GBH6G1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f51f5679ffc6406c871d6e53686f334d05273a921fb77a16ef7904559d86a19. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBH6G1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780094a89a12f5eac19b7c9dc419d22f1786cfae637d9f01a9c4ead937af4b14. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:19Z), 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/GBH6G1200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911f5903c096c6d32f94ec10c67ee868fa93a8c05d429941a47861fe2e67ebdb. 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/GBH6G1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9e32a770b4f7c10566aef045514714976ec2722ecc84ec7a27ca1d7fc834b5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:50Z), 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/GBH6G1200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b3d33025222f97f7d9588b74ec3dc938288d50af013b55cb596095000152f9. 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/GBH6G1200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb053f8bf193bb58c9b8ca9a8f5a2c8ab771e95b0e03e264af6a071f8d9a6f353. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:23Z), 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/GBH6G1200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0234006cd5ae276240a4514ba77f65180b472f6eb7a4b83d4f4884d049652. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:44Z), 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/GBH6G1200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3a97af5b31cb0f52290419de9eb6f6301c8e8e2777bd5d468f46194bf1d7ec. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:45Z), 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/GBH6G1200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e3b7caaf7f913a05dc11fd8fab3129589bf775ed78b2515e09f22ac21c046d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBH6G1200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd22bbe650088a7b9001d65395509ab803ec4904e767bf553a5cac9882aefde. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBH6G1200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01648eed5547b656101828d533aee936034d4912a8413dc5d12c193496f330e. 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/GBH6G1200025.