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 0x3251ee5dfb8799ca8e07512f6d42cab073da135d129aeea24bd5d60610a71dfa. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e21aaf0-42fe-4a8c-a7e0-af11abea7a41.json and https://artists.proofprofile.net/proofs/artist/1e21aaf0-42fe-4a8c-a7e0-af11abea7a41.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 0xe59be3bf0065b357bdf3f34903c2905b84e8b77f6e6bcc2f377044179f293574. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:31:01Z), 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/GBWUL2573756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d099e758a8cf370130c8f1daae515d291318acc92a8444c73b2f6eee5672b4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:50:20Z), 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/GBWUL2573825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5958bd27aeb7f5dfea2af966a199b38c93989967b1a274569109567defb411. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:31Z), 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/GBWUL2573780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1504550de7bb59123e29f4b9d42cbf4e0dcec1940ad1b7e1b441b7d027925d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:19:04Z), 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/GBWUL2573812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da50a63861e80bb14ee69e567ccae8750804ed98d26e4419e9eca7031ff16da. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:08Z), 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/GBWUL2573807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67291f4ef1ac0d57c70cc82be8e6d6be0f52a85670c9b7b58d06314dda14a91. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBWUL2573817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1022de79bb820048225ed45708f343b842c08be1eece84c9445aa62131688b6e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBWUL2573820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ac6177358aefceb26fc33766f375ffbdce29e34edaa0521fdbcfc9d0ab453e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBWUL2573791.