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 0xea9eb5b65a1c0da4e7fe5a7277dec0ddc5526ef8574193c400c243dcdda3a84c. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f880213-1472-40fa-ae08-10718ff43339.json and https://artists.proofprofile.net/proofs/artist/2f880213-1472-40fa-ae08-10718ff43339.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 0xeaa763c7c66ef93fe7282952074a21c5f423c1b9782984760910a1543bac20e5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLUU2300338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50de6943f8dc7791591ca684b253def93ddabe201bb8db1d73dffe92dfbe7c2b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLUU2200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc0ecf9d7134ac3b77b37ee78b32ff5c9edf8439a781a8632c71025f49d6002. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLUU2300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c0a0d947f0e4b5c68ad09c14029546ec73e37e51beec015f2f7c2b60806e1c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLUU2300663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b016d59f9709fe16c13eff1add752fd2bff9337fee7582cda75a5a903d65681. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLUU2300664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a6cce08a02c915c89b0c3c55c51417c5e8b84929a62d6cbcd7a3e489b24f19. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLUU2300665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1242ab73601580b0a202303aa163421a192a8b09104fa3a017f1305ba60f6df2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLUU2300667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce929a471912da1498d260b5e548d59a32cba005d226da89f699fb898639373. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USLUU2300669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f15094b39fb854b8dc329ebe3315de9a3a0ce0f2a86d86547cb6df199a5fb02. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLUU2200888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae3cc0ba55ac1746edc9b4e2f3582728c159a169c055657546e5d75f870dfbb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLUU2200891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989e09b675e0c46d8c9ecc0d4896763be64ae2c0a0699eae20c61c6d66208a9c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLUU2200937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6170222cef88f7f1c22f05d9fb658e676754a6106f6c756a6bd08500e3b1957e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLUU2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da790b52979f3e3712823eb94e84208be591edbdc61249a7adc260c575a6050. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLUU2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd081b9dc0e9fa34dfcfe378dc456f9a7d05c86811f824b02bb7a836207b7d710. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLUU2200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96255646e1e602700530aac8e95cbf41071b1bb89fc36ad5ff95a289c59eda16. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLUU2000386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe136403022041f1f3bda36e7b6f6528cafd91cd6ae8de1111829fbb8371607d2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USLUU2200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745fbf8cbaa8de151c1ffb4358856277595bbf5389a0955006990bd48d6f639c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLUU2200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37b24f9c2104345ba44418544fba65bcb15e0c9a20019db01df578bd666dcdb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLUU2200468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9822dee9a4ef8fcb4d8bd4f23c4306abd1450257cf98f8bed45ed47c4731f21. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLUU2200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96255646e1e602700530aac8e95cbf41071b1bb89fc36ad5ff95a289c59eda16. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USLUU2000386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512b9213dc1889ae6bb434dd0a56d6fdd155e9a03a7fd12cf77847afb8e7da57. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLD91734599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7261062357ecbfba3ee2ba78e45f01568f6512deea757adc7ec869d27884c835. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLUU2301949.