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 0x5e037118c8c51c8e36e9e4f31574cbee6b5ada8dc12621d123dabeea24f4face. 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/0cd13790-f286-4875-a06b-d6a0a388540f.json and https://artists.proofprofile.net/proofs/artist/0cd13790-f286-4875-a06b-d6a0a388540f.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 0x3a440d8bd2803e82d46742443d77a36dcddc9a4fce8ef40a4aa3e630aa3ad1ab. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/PL44J2242993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0282b11ca14df653bd4d73d2dbcf4ff7edd475a979c487c98dd2acc7d5e2c8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/UKACT2370877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fb98f93ec8fc3ea048fb39edf4ad88a78b5342f0ca4b4b4dad86a2f9020774. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/UKACT2370878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4220fe682cd722c2c47193f7fb6d8b27cac6e0edf036774513244c0dae94afa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKACT2370882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4cf7402affc852d34d6e644c34c8088be82fea2c4cc72e8a51caed6b08fd31. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:50Z), 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/FRX872304125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054fa480cc562771164aac5a5131296265418b1b032c218bb5b9e66c1591cf6e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0L2354357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e2f72e45dcc61ac09631bbb174f8d5ef6605c9ee2836f824410ba8d2251a19. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA082336871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40acad2dc89e5d49b76d7057c5bf0b77bcc3eba148518201e0b7557a307217af. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA0L2354358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5478d9a0bbf5367c60d4ef4f1669ca9f2670474f458410e2bf8b58ba6a1fa062. 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/FRX762421699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cb4d8055da2aaf9b576710fff9bbd133cea041acf5e5d49735be948edb80d4. 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/DGA0S2463544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda40a886f0606703fa21c6e6eee47da5ac46afa46f50e75d5f943fa554446a2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/FRX762527216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384454e40cebb869bf47d03d08a38bbc264cc9c4619311ccca0bd6e4d7559efc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA052588088.