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 0x458a26065f9c7403dc157527b3fe7d64048b1b7d795ecfaa87127931a560ded1. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80c803eb-9bd1-46dc-a198-fbdaa3c56f49.json and https://artists.proofprofile.net/proofs/artist/80c803eb-9bd1-46dc-a198-fbdaa3c56f49.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 0xce46bdf3ca7ee1942c113c01d7addbcfb2c4c2202c8c99bc6d8144050315322e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBYEJ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91414e62706f80d94f83332a7136d57ce0095bb444d60271d37e8f39d85075a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBYEJ2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c4aa0905f69f81c07a7997c0b9ba3be761064469c827a22428d10c4f041eec. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBYEJ2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743972492ef16ab7e6f4f94be257f951df1cf3aa40ea03aa7f6e5fe85f77e9c. 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/GBYEJ2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796471e620d2ffefcdb62e36c11fc08858b5f168077a6b9c77a41694a0a15d1e. 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/GBYEJ2500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d92501a7e5b66b67a2e841163eebe46d9653f74de47cd857bebfa3681ecf34. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:46Z), 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/GBYEJ2500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f2e126080be377cb50bba08922325ca665016d46dc7226b35c715ef1e446b0. 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/GBYEJ2500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff87845f9a9841abc1030363180148930cc6eba22752a151d11bae643e27652. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:46Z), 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/GBYEJ2500047.