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 0x8c38fcb3a4bc2f5ae60a737a550a411d803d1edba3e01054f8bd20ca30af154e. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c668063-7733-45cd-8b9c-e6867d74ab22.json and https://artists.proofprofile.net/proofs/artist/5c668063-7733-45cd-8b9c-e6867d74ab22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Doktrin - mit Eiern, Herz, Wille und Verstand
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 0x7be2f085ff63ff731d9b991ddf87f97c1fd2321d3a57292166555ea3be049dc3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QMEU32309870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36e4dafdeb1a8e251d6f441c72b844ed9be7e2ec395e6f04df8b2dad69dbc51. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CH7812418778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1606a3249a1b8c8d681d6f6e21095df83206cb35813d297e37eb7a1eaa811cb9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH7812404536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c250e854e2678d0cadedf21175235bb10f9f28ebf780a8d59aaca9f5b9dd58. 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/CH7812414182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa200d9820e9aeb558db3feb0a4211972f921065143d6af192534939f8dd9d7bf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH7812407682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fefa7f5302d98030f2fbcd42fd18d21786c49dcc77629c359d2416d3d484461. 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/CH7812410294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57113f600a3a78ea6e207b7174a5a870b29b7a0089ce18149aa42a043e710cda. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7812528329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6739cead61a18ee5c62da1438eacda4289cd2492d62d9c61208d61610545da08. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH7812528330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa200d9820e9aeb558db3feb0a4211972f921065143d6af192534939f8dd9d7bf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH7812407682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6739cead61a18ee5c62da1438eacda4289cd2492d62d9c61208d61610545da08. 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/CH7812528330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c250e854e2678d0cadedf21175235bb10f9f28ebf780a8d59aaca9f5b9dd58. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH7812414182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7e17c877afcf50e1c7394d803c9bd08a5ef28360f947b7a5ef3caea7baf3b2. 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/CH7812422873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee84ceb12a2ac0d444cbbdbea8d8b9cf9bccc538b174826efabc7596f9f45616. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CH7812528335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57113f600a3a78ea6e207b7174a5a870b29b7a0089ce18149aa42a043e710cda. 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/CH7812528329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36e4dafdeb1a8e251d6f441c72b844ed9be7e2ec395e6f04df8b2dad69dbc51. 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/CH7812418778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc088ce09b3d3ccb89eafc739acbc5a5ae9abba06ad53846d0125253ebc31d5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:25:23Z), 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/CH7812537571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d3ae6fd268e0863ef279a421675313217f70219b60a73e16d8b04ccebc74e8. 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/CH7812537575.