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 0x3157a315a44886fd34f7687ac55da9d04f0418be7ec1207cfe9f01029a8892a6. 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/a246d443-2e3d-4dda-9be3-f85f816a4626.json and https://artists.proofprofile.net/proofs/artist/a246d443-2e3d-4dda-9be3-f85f816a4626.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 0xadfc719176a17be072d9e5ddad88dfe9232620bd01fa3d1e63545088d83d73e2. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:05:33Z), 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/QZEQU2140999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567b01b051858405112423065028e6db5eedf404dd46eaba9a93f029eb721972. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZEQU2141002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf467d7721620c4d0342ab75eccf8af9e1c1df5e86e2b9c8811638452034549ea. 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/QZEQU2141004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa017195a4e6d50ba6755aa90a9a0181a19fdf473a608f69a5882c210ace4768b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZEQU2112233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05690e9e6a6452df5e0d34d8594091ceb2e5c311bb9deb82f6472ec9e78fbc8c. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:44:15Z), 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/QZEQU2112234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7464c54b1392d1996070437bdfdb6530a069acbc128f925c0a7653be9ad30a. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:32:20Z), 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/QZEQU2112235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d39067da06d5465d934dbd91ab58ff725060ab7d0c056bc7ce8ac58e59e6a9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZEQU2112236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795360918b63d0e0104b6e6d869d59085ab95937a089f3304f3a335daf832986. 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/QZEQU2112238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97f492408bb06a94da1deb85950bfdbe83cb122c7b2bcd08a3ba00fedf7a2a1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:49:19Z), 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/QZEQU2112239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0839d0d1855f21860f0dc0ab36a857eda2a48e3b0b37bf22ffbad749e70454e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZEQU2112240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59af1800fa6b3db3e4bbf78dbc4a69391ae4ccbb8aae428a0d38ef9862cb3d81. 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/QZEQU2112241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e288af167635c48b6270b84176f4a03b9f13940166f3a3797add6353520598. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZEQU2112242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478abfc5e2c0bd2ae17c629ae74841967bc579ec2b8dba3d75700a100e46e79d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:44Z), 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/QZEQU2112245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364145d5799d9533b2645d3ae7262b6fdc6e048661f22c4e566051d6a55f2088. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZEQU2112247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890242e02a94b7e7291deae238128dc4f19935c062a1b542894b0b1c5fc4d959. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:40Z), 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/QZEQU2112248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04dc5dfe8c239500d1305474299759f54913b69fc3a89bfbbb749f930718390. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES48F2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7278d1bff8face3559a37588ad9ac47008b534d9e94cbff981875d594b77fc1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ES48F2300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfcac073918298b5dfb7d3a6745314a813305141f18a92875e93840d734d672. 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/ES48F2300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac335e205a25a3b7aa8a51fdadfd710aa7891662adb52efdf3c5691b2adf633. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:42:09Z), 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/ES48F2300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d629461bb3c1c8c439f98e2c9015051f4acc0f1770c829155ae87074b407ce. 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/ES48F2500766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046d726500ab9eb47611cf591178a8f903393ebffa871a5cbc2607271b2c4b95. 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/ES48F2500768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146877e4e73bfe7e4e598d20f0a2a36b7e50690087ace6d7fd2e089d8ebb3f48. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/ES48F2500777.