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 0x195a073b4a7f99d65e88a08577992d48176308b88e1208307408314e5e82b6bf. 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/2fe1b2d3-293b-46bf-b2c0-c0a1f17aeb6a.json and https://artists.proofprofile.net/proofs/artist/2fe1b2d3-293b-46bf-b2c0-c0a1f17aeb6a.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 0xfd103c373e330bdf40518367c1da1b20dce8920e249d461a304e202c87c90d0c. 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/AEA141704444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371eaa6315ef37db10c7bbaf9da1a25f0fc2986a098434b151c7c6297ae9e422. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/AEA141706196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8865c705b768e7134ec8221653b23c022c99103b5621dfc417fe0ac2522bc4b. 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/AEA142002353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5401171e80e5a5dda1c8015c7461d647fd00372c07b730d5e6bebf4f6188775. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/AEA142006660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f0dd035c402a7d09fd149c7249faa1b0365be36cb57e8b38c903a0c36a1dc8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:52:30Z), 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/AEA142105701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299a8b165eb82aa899d544ee7f3675114577aab39d18966afcda527ee90d7de5. 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/AEA142200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a44d5746cd2d4f2522365f8ffcf763f33166194a17129f5aad332d3d99db61f. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/AEA142210489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fd1827058357992df81dbf47795c5a6e64df262bf04d8cfc32bf7bfc699217. 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/AEA142211486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6470a166895a551d6493fc452797d66765f68c2e7ed9593b360ada0a169ca1ee. 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/AEA142300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95475527c39982649fdb404df85cae8a25ea5fcc959bf053cfb13699ff64887c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/AEA142301110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab030ec3452c23e75d0412f9930bafb7fe80b218934a9c270839908dc881e19. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AEA142301552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a393be6db86ffe4d400cdcd3f1f63ab81268e77f23d3f58ffcc35e768fbf62d. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/AEA142400292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10967c920c07164cd6d7f86adade5f60f2aa6da9bfd55697a5ea579ea2ff36f. 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/AEA142401054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa4fbf9e58bd2d4ad9e7e1459b453c9a8e6de3057d965d04968be6f29d53b30. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/AEA142401329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e6a1bf3352a92e8f0640956896e6fa43776304f11f922b676d6a72e0dd598b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AEA142300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1c572fd728bb5cef96e49dd5d905a26ec4cfa87318d103a473b58351e800d5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/AEA142401866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbce8f35e3386098560e8b20681a053fa6c07958926de3a6b5b2041a124ebc6. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/AEA142403253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cb80c06220f8a9c6afbc2633ab8a43abb67943acac46b4955452306ad85650. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/AEA142501167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fc728639ac2830077c29ccf2de9c12ea641c3c4983db7deac933978d0eb06a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AEA142502079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d569995d0f6faf8d6ec3b958d1f24b4cb62048240f3edb408b3c4fd7c95ba9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AEA142502230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb40e3991fb86fe4c7c66e3dbd35cbeea5254401809362b73a9d25863c9f739e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AEA142502436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2052e0b1b54cef40286e4cc3a138b19d5d216c01aad9a45b30cecde7429ba4c2. 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/AEA142502665.