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 0x24ecf232fe8c0e4ee3d0de0d4879fd979501013fa1f25de875806166de5ec5e1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a9ff98f-bae7-4111-9bac-caa02751ccfa.json and https://artists.proofprofile.net/proofs/artist/6a9ff98f-bae7-4111-9bac-caa02751ccfa.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 0x63a254e1e397a5b2c9bdc1587bc82c045f813c951b8eb809960aab088b5e6350. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX201603324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fda531bc0c150115ffe4ad5fb4074ba042e5a26f7f2b470ed46ad016624c8d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:37Z), 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/FRX201601338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703f05d39cf49ee415e83e8e4265828f6127336e16e93c6426f1669fd43c1e02. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX201601340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a39b51325f9c44ace80feee75682a8ee9e47e5567ed2bd5606bbf121740f99. 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/FRX201601341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae48b0ef6802e2bab28503d4e0e0a6bafe5c43b62925e736eced3265d90a047. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FRX201601347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab07ed197291ae8fe19585bb15879f595551aeff499da7957d289481cb7aece1. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FRX201601348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520bc7bcbab3eefc659200547077bf1da216da0eaba04393e31e983cc67912e9. 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/FR9W11720731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239d7c287f74a7dedaae95fddb11e04943a624666d269cc0fb2130c6d22b1807. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W11720733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc088b61cd240846e164cd453dc847a1c97af3fa066c5a3fcbb83e692d98d64f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W11720734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19524ce47c753542c1700b5e0fc9d7176661e6853ecb96b737d827a56fd617e6. 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/FR9W11720735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ae2094fdc594f13558f956f796d96d86295fa8189db8038be0a015acd1463f. 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/FR9W11720736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f022fa75459d2751704dadc148faf4a6544edb823f9d3020b6128c7a974e208. 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/FR9W11720737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88175f34b09bc2a6d37326a0c847d4e165038e3f86c52f8a404f093c56350a2c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W11720739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6709b5e9f9a92382726f222916400c177a6f4a7ff53b010dcae91001477e881. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR9W11720741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8de1784cc002eebcad4bffd4d8d75a276f33b8a59b6203a49312e05c0c5782. 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/FR9W11720742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafb6c504edd6df40c276bb945596b64dab0b79e08e8078cb4e64b022ed8dc2e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W11720744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b5d35cf90b25b4b1a89a7aa2598fae786bf25fc237c0b386ad84c791eb229d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W11720745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19524ce47c753542c1700b5e0fc9d7176661e6853ecb96b737d827a56fd617e6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W11720735.