thumb|right|280px|Map of the medieval Peloponnese (Morea) with its principal localities Morea ( or ) was the name of the Peloponnese peninsula in southern Greece during the Middle Ages and the early
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 0x5c5601a697a12ab245564902a3a20284ea7dcf3dab40061d46a230d17514b2c1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/733c8b39-0116-4390-baac-181d218ec41c.json and https://artists.proofprofile.net/proofs/artist/733c8b39-0116-4390-baac-181d218ec41c.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 0xde8540338fb300988a478609974d94462b420398df49c3e5908ad8e53128c643. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZB12133303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe951710322ea25872f8e7de6f6d35aa2cbb2d4d61a2847b3b5c4e08f9bb88d75. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEZB12233303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd5ebac39e4e7e53b3df373b9cf916f8a7f962dbb26761fdf109a94c35e81df. 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/DEZB12233402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed84fd84645c02e48ad1dfeef5d2b5d5e410d5c27405dadaf021248f7a486710. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEZB12430001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05387fdcfda301e8da0156b895c26205b63c6f760675d4b1825c78a7ae4f82f9. 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/DEZB12430003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ed42b4f44395b352ade4da8a6c63e607289cb4557115dd1cb6c2d45bc2ec58. 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/DEZB12430004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114c309a9bb473a3064297ef17309348f9ad09ab8761a5cd7f2027eab60f66d1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEZB12430006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f36a09464138d49823c92f809c80cb9b640b6ea17b9398d295aa15f9a7883. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:07:30Z), 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/DEZB12430009.