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 0x00218a64fdc508ccd63f60dabb2b720df13ec47897fa8340dbe234ab2b50d033. 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/3eb2f961-9805-47cb-91e0-54695c8e4f2d.json and https://artists.proofprofile.net/proofs/artist/3eb2f961-9805-47cb-91e0-54695c8e4f2d.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 0x0b25d90c508db861dca5dd2170a475893879def7bc794168e9493bf82061051b. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:38:12Z), 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/DGA052387900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b765cef48d7b3322bc75262b52fedce3399d34ca1e5f2798411c98aa568a9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX452486738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16aba95030cdcd6194a6af6ef438a882080d4a573efdb139f3d0619779a7fa7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:18Z), 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/FRX282599825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae25a2cb53e6165e43512af10c02800c3d330ecc2aaef04c732f35997351c205. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:53:34Z), 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/FRX202592031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37410fc2a3a6b6597af8abce5f3b8203d8ad92baa0ae12330e0b7e5ee91bc29e. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282599826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197936f84a5d47530d34d259a8a43143c1498511648604193cfa95f1b457ea81. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282599827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721d4331b88ca09bcbd813c6be07d2ac8ef2b34a664627e9f622f3f50ad7030b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282599828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a78a089551ac909e1bd840d51d82099f4798f8c1d8de7800fcc80dbb0c289d8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR96X2574320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76512d42ae58c5f254aecfe1c2f46ef6c48b5ba44940d6ebabb6b069d5a852f4. 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/FRX282599830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665e61d5579c596f574daf4e66f1f674f6e67a7167562ca110e02f526b793715. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:44Z), 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/FRX282599831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb379b481bb9172dd08a7e3dc916a58b8f5838701bb1c99f950ad948a98fcabbd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282599832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d95bd6e2af2f49a05d2c4b49351730a7568e44d41e89d7f6e096604ac133427. 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/FRX282599833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5ed9990b0e08c199cbcbb373c776697cc292c312e09885380acc6278ef0dec. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX282566101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197936f84a5d47530d34d259a8a43143c1498511648604193cfa95f1b457ea81. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX282599827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76512d42ae58c5f254aecfe1c2f46ef6c48b5ba44940d6ebabb6b069d5a852f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX282599830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c7b76bb9667ae5f5bab19bc16826ca5cac5d0b1cdcde12763f27c63ce00db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2374582.