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 0xc13271cbda1eb38d1641609d5c5938ca6ca4a9742d02487bcc64038baecf0f8d. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1074c9fe-96dc-470d-b712-9b3b98bccc9e.json and https://artists.proofprofile.net/proofs/artist/1074c9fe-96dc-470d-b712-9b3b98bccc9e.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 0x1c65a660753a617530993b9066d7ef1d663d9d583f7fad008c164cc65f8e30f0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/KRMIM2446608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d61c1354672343fd53a290fc4f6e7cfe2e538c74aba7e893b83a057cb60a909. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/KRMIM2446609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55672daf13ccf4188e5c550433588b9841e086829f43af6f5e7f91c088cd143f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/KRMIM2446610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91962990b3178829161dc8674dd0707da6c7d8e98fe92f2892ffd4a0cde6058. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/KRMIM2446611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbd485be980aab04a71133d3df2177ff2c94aa8562b3df067de9e450b06aa46. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:51:49Z), 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/KRMIM2446612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ec97dfb8cc3c467768a7ddf2c5e789a68135f0e4c4f8ea6010261e70d0e0e5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:47:39Z), 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/KRMIM2446613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650270667965d137de2e1290beb870ca4b0c7de105592591d27b7de481fb1166. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:29Z), 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/KRMIM2527005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebac21a8f55acaf02058bc697d9fd5668dcbb87e159451e5bd6ada90f7dd1fd. 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/KSB022501840.