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 0x05b230ce71466604c926439f5e9404220125b608e70a580314dbee59e40d9757. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c910583c-8c71-4d5e-9472-7fbcce38bc55.json and https://artists.proofprofile.net/proofs/artist/c910583c-8c71-4d5e-9472-7fbcce38bc55.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 0x9213544da8ca5f207111ef07e56ec9826ae30e4a1ad100d89a7062baa06b8f67. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBSMU3666357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c7b8d1b2531992b64df3ee5553f9b89faeac9297986ac7089b9d9e6cdf217f. 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/GBSMU3262182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe473fe6f16a4176d69c5a62d2949cd94f2e6d582d98ee6ad94d03447e3929b2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBSMU3262197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a64267ef9a8b1ee9af3c7479e900b183c97379156add24725f6e4e53bf93df8. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBSMU3262200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3731b75ef340349ef964e11812044bc62fff22e335c7841b85c720ee325ade. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBSMU3262203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c46ea1cee62b70f4779a4dfbb1f5cf745e91390944e1debf5ad048f5b294c9. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:00:56Z), 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/GBSMU3262208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d939bbfbc5a2e97ec8ee41cabfeb6818af1aae4e684ac0d32e7d4401c9a5e23. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBSMU3262210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6631529cec16f039bc3197c6a3d463825edd9d95bffd395a35570cfff17b445. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:01:39Z), 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/GBSMU3268774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82c4f1e6668c73dacaeed4a77a4220da57a736b68e3ca5d4eba9b089131806c. 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/GBSMU3315470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801ab0b812520d82a01e2b2bdc8921d38074c56ea164d033b960a6580a92cd58. 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/GBSMU3483560.