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 0x8682699ae77ce7de7f02f8284187a6ec58b4feed3ec6d3feaa1ecef5e5cd7658. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82be165e-79ef-4303-863e-89ec7c72d0ff.json and https://artists.proofprofile.net/proofs/artist/82be165e-79ef-4303-863e-89ec7c72d0ff.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 0xf2be978c97ce4a9f6140a7b3332bc93b36d5a09e651716f777841e738db39cce. 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/GBLFP2539487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16b51235a11a14aa855d51368c899054a5b030a8c9ab4cc91c613e1734c6e57. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:38:17Z), 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/GBLFP2539488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250996b493de696f684a51e280655f22b962dc079687b94f8522dd505a14e65f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBLFP2539489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb0123e1a35d76335641180f159b09656f00f3fc04a2e7c1dbd9e92655ba147. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBLFP2539490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c8f997657b178d086e37622c81d13e3960447e66e5933b405aa0ab1623536d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/GBLFP2539491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce14bc096899576ee9e9b1e035396b01dd56a632327c0572b7a72ed2475c778. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:10:00Z), 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/GBLFP2539492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d29b83a38feb30b680d9d8dc18dce3667bccd0ced28ede19b1cf279de5520a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBLFP2539493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65753630fbfc616cd883dbbe2ec65ea0ed00afe1c47cfbcfd13978459dd1cdf. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBLFP2539494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe196b5337cc0ec31290122d5c087345ffa94dcc169fcb16e95509c411404679. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:36:50Z), 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/GBLFP2539495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f7e1abdda6c1bcca0705fa2211132fde2dc0f831adccbae45ca6719e40bce1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLFP2539496.