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 0x49c6ad2cba24c22d0e020bed8415d811a2843ac6f68f0fc687463190ce914458. 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/3e5806ff-e739-4a23-8d36-779ed576fd6b.json and https://artists.proofprofile.net/proofs/artist/3e5806ff-e739-4a23-8d36-779ed576fd6b.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 0x076ac7b3aa0763a7867c04dd95662ecb004df2af59f57f1bf0f08e3891b4e8a9. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/FI3VM1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5691ddb826ba781468eae15c220892cbe20df3f8f61cb348356719bff475acb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:31:58Z), 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/FI3VM2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf902ccf34cbddaad4d168084cd803474fc7c2ca9482cb76dfe957636d71d193f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FI3VM2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69ca485c04e0f7e712bd023b78d46c9634cf45977b36eae8ef18f7d07fb91b6. 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/FI3VM2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb528ac229f61d016610f9819f89e22a587aafd28071e877fc9d39b84046f11e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FI3VM2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ec89b9a788048ac4961682cc5db04ac02c2f3dbc79402cdf9450ca7414a3e6. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FI3VM2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0d4ba19ca46f311851516500656fdf89989d94bc77dd2e41c2f9adf1b437c7. 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/FI3VM2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34faac1639b86dda364a41dacc394040b7ea83d4aba9659f7e4d0b26c06e77b. 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/FI3VM2400004.