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 0x61898a0fc536d480694e2301cf3d08830e912e5839b907d5a7ac7e2f89f1c972. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da26b421-bc72-42ea-a6f6-5452caa34602.json and https://artists.proofprofile.net/proofs/artist/da26b421-bc72-42ea-a6f6-5452caa34602.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 0x4ed42d45409909a037329a0b111c9e8cc385a44e6e2e0b6dbbbe512e2fbc8e93. 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/GBLFP2380080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb92be49a4778b08e780dc75e621e0332b7c15e8f9b272ecc08e84461fc76219. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:27Z), 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/GBLFP2380081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91fcab75c35cebea3e257cefc3f69504c6885af2377ad0dc0973af412e50391. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:26Z), 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/GBLFP2380082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd0baf3fc1f445354e3007669cdf8613ced365334cfab90ac57db573d4ec8c4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLFP2380084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dfcf06ad98077515da41640a4f763ad8f526c501031b4a4ca628eab303745e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:21:51Z), 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/GBLFP2380085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3314136678af7fe94d9db3bd1f81ba80fcc87038baea1e7f9470873f41ab7976. 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/GBLFP2380086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ea240b85aff16e252b8c31cd211f572e977c9082f3c341de939991d30703cd. 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/GBLFP2380087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad01b3f79d10cb0215ffbcc3d72f06231a4b4cd0258ab85de383c856eae53edd. 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/GBLFP2380088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe512c1208fdcb1cf7d380221c3aef3a1f8fbc210abd2c3f658cc15e925cf834f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2380089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf776f51f2b6bd8fc4c28df4822341da59dbc1519b6cb5ee1e159cbd5c17dab2c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBLFP2380090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8641ad4bc6a7d66891b4548d2617ed7ff14ab3ac34a53d4ccb924471b7455e. 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/GBLFP2380091.