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 0x815cf9027730e2156dece2f8c32a6126ccb79a1fc94767ea5789dc64c08eb139. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6babab5-55ae-4f62-8be0-2fec24964d38.json and https://artists.proofprofile.net/proofs/artist/b6babab5-55ae-4f62-8be0-2fec24964d38.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 0xd07d14136e17a4ae17b081c96da213ac9eb6fbcc5dd49e83105a1fa0ee64fe2a. 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/BRVWS2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23135f75f6a35d3bbf1a3b32d5d6c52d1106ab750e80f59aa9f99f1ccc32dfe. 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/BRVWS2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e068c61bd44ff007843757e1d31020779153f2da50d0e32690fcd4eab888559. 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/BRVWS2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19199151f9443295736912ab2a6d8be89a1d76ead0fb2aa55c6ae41285298c7d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRVWS2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecad60328008454c4e0154ea5758917f9464556fd2a3ab0202124c123feaf14. 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/BRVWS2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e706a95ec79882bad1207d5ab728f456f1cf01a22e9c2c2b211a120abbe9e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVWS2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ccdcfdf186c53848b6c372fa4c68049c19d522363b21647c793509b032ba5e. 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/BRVWS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43653616bc52cc864daa3500d0eddb00b8bac1f81083a75c4d8275fecd49dd90. 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/BRVWS2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f2c5f745e73919649665f97c45dc96a44e9c5618481b30dd59512c2bfef229. 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/BRVWS2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfcdacafa25569c9e818612e1f57e21451a2511ae1e76b497ea7deb768289fa. 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/BCGL72200021.