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 0xd59b4deee8788c9604167b8a7ce7aeeb9fef86d9a975c60e61dee9b6ed6b83de. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b24feb76-3ece-44ad-b3a9-231950889eb6.json and https://artists.proofprofile.net/proofs/artist/b24feb76-3ece-44ad-b3a9-231950889eb6.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 0x97831e14843c7e07f24e7d744d4b3f78b7901974b9b3798fdd7cc40452d88abf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/KSA012274904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89005d46a9a1b1b49dfe33f9ffc97f7539f1b43feb9fcc17787ee1978a331b7. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/KSA012274905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0406537119a82f2c5287fe73d958e6ad1373cb766ba2a4b280da2c8e609e5943. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/KSA012274906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c07958844fdf9e915d6eae595718a3dc1df78323735d2254574fa4a36a4c1de. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KSA012274908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbe43d89f14160f33feac46a301e317482532e008e315a6529c27c32a88a967. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KSA012274911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472c200fc8ba7196f44eb1f7461f3567cea37288673c59e35f5da324bf9c736a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KSA012274912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c5e3a65d9e179fadb37fd58791609de62732549620df1e45f18bac56445aef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KSA012334895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0ff1271efa574b01d7f1650338f697126395e7b1c579be15f7360ea960a93d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KSA012333009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e0351b0732b39ec17f1742bc70def5e62a83b91607fc30fd9cc5606dccfe07. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRZ292106185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90664ac0cd54981b252745edf5298e7d2b7e32583af07f3ac02f11e84dfb8943. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA341608999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2164316719fc451664847068722c94409287d7b94284e2fbece8b258510c0c04. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRA341605413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4818c3a4bf8ff7bd534c16f414b1e13884e06d1ad6eede161b315ac411b89b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:02:19Z), 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/KRA341540661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc24ad3a8e30add101316ad7c15361875e15c79a587e44d8e729dd6c4b0d97d1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRA341540663.