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 0xf8b1db78d50d7770602fcbc3f741d166935df84e821a804b95a9680ef6bc6f99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2490846-c67f-4334-8710-39c6a06a688f.json and https://artists.proofprofile.net/proofs/artist/b2490846-c67f-4334-8710-39c6a06a688f.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 0x0a54bcfe1f2076f4f6f757236bb8bb265b421873ab3b472e5e1f586fde14a91b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCM9A2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c36d17d572bb52352bfe3add68431172a1321e2a3cdb919b5a29057ff8ebf1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BCM9A2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccc32ae182cd23380d5dda34d99910fbaab833f01e6786df895dd8d1afb2cb7. 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/BCM9A2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a258c8d2701c38a1a4184375719bdf4894425932ff0d77ba4f4f189e45a8efd. 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/QZTPX2227278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fd462d5e6be2954906fddb42cbb40104cbb18c0fc4bb71b3c3ddb9f3c24453. 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/BCM9A2200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105d6ff418e1c52a0dd665c9ff0e95081e5c599d698b3ca925678c6f1e17f7eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCM9A2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18addbb1bb48db61499a15bb838d9e1b0f4699b78f68360dc96fe608aeb71fa. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BKM2L2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e5aabeeadcdce6180461d5da5ef870533caf6162a3b5d90a05ae8d83f711b0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BKTKP2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566c24c1bbbe0eba7380acd3f763b7d3f5d36012b9979f2961e8ca2502760b52. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCM9A2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa284d95b8a20f540f6f4af0a549c51c2067196798945ccc8676306de66b03367. 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/BKM2L2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb577b66ef62a73806293aa992c09a8c697e0aeb0d357164e249d2127ceaa5a21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCM9A2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799add1a88a50fd5c2205525eafc70bf99d584d24f194a53fee731102630c4ae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJW2392776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47acd23c1de86ceeb02c53e729f56a77c432be1d2592d66fcffebb05e76c3889. 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/BCM9A2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8a8e247767b545467e212749884b997de95372031deb21022f21fc27b1e935. 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/BRWMB2400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa284d95b8a20f540f6f4af0a549c51c2067196798945ccc8676306de66b03367. 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/BKM2L2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dd1a0b6292674111ebed7a1e5386df7f9acd8b0ea3861d3e69ad9a1dd9b878. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKM2L2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c1b307678a2cb937ca7840880ee5a90353241c01bb77e40493341838e325e. 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/BKM2L2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c1b307678a2cb937ca7840880ee5a90353241c01bb77e40493341838e325e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BKM2L2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c9e0be797aae898a6d4236ee5e63c36e77c56177de59c4d47df1e8b25a88f9. 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/ESA112457495.