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 0xd71a71519cc4a40054b2ad258efa631eae7b4a2638ee19da7b25a1b05c60f7aa. 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/a476b8c0-2169-4614-aa2c-a295f1b7117d.json and https://artists.proofprofile.net/proofs/artist/a476b8c0-2169-4614-aa2c-a295f1b7117d.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 0x86ed669cce355069b1074c382ada99fba578270fb3800a0790e15f9147ae3786. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6Q2369405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0808a8f28b3a33b96b8fcd455d37ae307eeb8a1b772521e348ba10d4f7baff. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTB62338843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f91fba917cb3e475a12dc162091cbadb71535460a93c8e5d2b05dcf5bcd5f1f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ROROT2301135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54417c992006c9cf42ff72289eb6dd5ba035a3a11feda0491d6a0f29515f2be. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNWQ2421790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fef1c4c0b686b9070058e739592755ef45300ef6de3f01dc7bcf283f9dd4113. 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/ROROT2303570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f032fcdb58b7ed68bdfcd927eef5c587d872c97986737aa69fc5ad600a7a1f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ROROT2405620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99824a91df370ce831027c20b342ef027ad58f9a76b4e1b9da41972da1bbb025. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:00:35Z), 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/QZK6H2438956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17a6d98f4fd11f30d88b7a4914f169304a8d053a1cc0c66d95d455e1fafe56b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZK6H2435343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbced2d84f46d5d31380358eebb4b8daeeefa2f8966ab893ec19279bffc28bd81. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:41:25Z), 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/QZMER2439334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b38e87aa0c6d7010f33c198dbb5563f78c3e220f5452bb3a10e6948c67852b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ROROT2400440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c02340438212d36db5f5670abf9dbb7f62554a6b0dd4190dc6f94b334c76c9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ROROT2403970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6859e6fda1b4fd14504fe53bdd5862759eebcb29ab9aaedde3f0333c150bba. 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/QZK6H2438977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97524dfbd770ea3fa25b722d18f6ffdd381a97ef7e035fc4e188e57c9673dd63. 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/QZK6K2565724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7992cd41ee9d28cdca9b5af9e2f02fb186debb55dcb68532a158b8aaf96378e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6K2565759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3e2d6ea87ad7f75e864a70b4acdf53721193092071101860cfa2dfe341b6db. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZK6K2565733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b10163af58a6f2ca45551195b0ecc7e069abdf3daa4f912c95107fb6c0b966. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFW2522558.