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 0xd818c51ce2c7d6bfbee6a0ddd0a285b9710798d5e929dce12a16025f4e78d159. 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/121bd8ba-0e1d-45be-8cce-7bc5c4276dd1.json and https://artists.proofprofile.net/proofs/artist/121bd8ba-0e1d-45be-8cce-7bc5c4276dd1.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 0xa6f511b8b232a97e79727ba6af7dfc92d2b650977ea9bef7c0a71205862dbda1. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:01Z), 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/USCGH0941628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3df21fd868f99cb82b051793b4365a0f2af3a87a475549168678e8485883b1. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USCGH0941629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067264d58765eb0bc3bdf475e430e2f8470cab0cd0210512ebc2e813d3726a98. 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/USHM90905361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e6119c2a9e9b8036cb3ec26de9c995f6ee84209564c0011a1567a616151ce0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CASB11100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa51c91c56c7afd228b397d64e19b0e70d24edded0472fd19a409e23082616f6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CASB11100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50783e0f49493c9c7ccd7517d8024a412ee97def205d7b38533a3f84968482d4. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/CASB11100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e5930b24f40f375853e31873ba7d94a352be0fe25b3d0ac895a012f0b477d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CASB11100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c49076238deadd870babdc4a8e694ab4c0686a318d75aef0bf7c4372aafa394. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CASB11100410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a096fcd699a82da105d71e9feba23e0f255ccaef9e48ea30fd6c832c9ea9d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CASB11100412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121187896f4cf4e1be3e2c0a1c5a9207dc54ce464b96a7143a1f33e95239a47b. 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/CASB11400604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf77c9baeaab2908b8377fd3fc1e3ae3f2ebe9763eea22db05d12b968d3e044. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CASB11500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004069333935a908d5610999b828d597f1109a2cdb51a163f96f7d0d92d51147. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/CASB11500702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88e458000c9b060a8c026b674ea11556759e240b47ae152b495571f2adf05b1. 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/CAM371702402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060dcebc97d86f3d579cc135c204bdae81b4af2d4dec133563d23ffd889227dc. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CAM371702407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d72876077778b6617abfd35e09f6732143501c6ea76129720e96ed8763f039. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:44Z), 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/CAO372321701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83646cd7ca7c3f913261814bc34e36cdcad16c704a9ccbbccfd81c134cfbe88. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAO372321702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dd4fb62c7bc233b8d79d8a2e15929a2264fd7bf67ce81ade81bf762bc05733. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAO372321703.
We Will Never Be The Same (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee3c739a6058b6b64dc17557fe2ff7a3c8e69416fff9dd843f98f6ffbc8731c. 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/CAO372438601.