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 0x742ba953022b11ca8d19ab21e05b6d25a7fd779ddfde35449607716d75a15491. 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/399ddb31-ace1-4049-9281-eb8ecd776d82.json and https://artists.proofprofile.net/proofs/artist/399ddb31-ace1-4049-9281-eb8ecd776d82.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 0x598f5f56c662e7d4454f3ff6039bcaf952eff016ddcb078f32ab332c0b8dd83d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBULG0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeb54758495e204756687c4e80af352deea83c3b993099c70e657f9f207998e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBULG0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeb72c1f2de699a1af124ebf7e10364c03565791632a7cf17709c71ef445e87. 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/GBULG0700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab5c770ce7902be6afb5db2243fe7dee1e6a75cbe4695d232cc561adfacaca4. 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/GBULG0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a7c40a3ab4e4f649473c8efc810652f97cc3421467fcfaa78d676a70282606. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GBULG0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c3335f97ff1ee566bfce908cdd7bc4daf21c92535d9b9add2cb6a659b54bd. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/GBULG0900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2876d31ac1dd40f4d22b5bd8d8d206a748fa9521acbe9d0279f7001bb68c781. 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/GBBYC1801412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d57b4a621047d98c31f21aa78d8cf5a11110f314b531530586467fbcdfb0ba. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBBYC1801413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc171c446144bc24cb46c5b361faf9a47b1b17e50fa289c51fd943ca632c51a78. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBBYC1801414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0ba957b080315a01453367734143cd7ba4395ebe0f390ef6f5cc2ce1f11222. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBBYC1801415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee72d05594441794c4ce9cc24d80c71c135f3ae123951f226ab55db3860e6ab. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:28:54Z), 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/GBBYC1801419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bacb81052c57dedc714fa06cd777fc4938c553176c52bb430fff65b713121c. 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/GBBYC1801421.