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 0xdce9bf0f6538e610e36afa8c0bf157b55cfaa0166b05805de2fc6daf40284fa6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adeaa3c3-0d2f-4cb8-a60c-2d0d81911fa3.json and https://artists.proofprofile.net/proofs/artist/adeaa3c3-0d2f-4cb8-a60c-2d0d81911fa3.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 0x906b0271b3a1863ef6fd4498c710efaf90fe756be468985ce6615baef2e6fd21. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/UKT6T2100005.
Meanwood Valley Tanneries / Sweet Spring
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336475e3a1142a90ca7efb106ba7c73bd7c235761d95483c0bb8c1c6782d7f1a. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/UKT6T2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336475e3a1142a90ca7efb106ba7c73bd7c235761d95483c0bb8c1c6782d7f1a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/UKT6T2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed767be7a219ad47e3f30b93530936b1be169604c4c3a5643bd9f595d04aa1a. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:25:39Z), 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/UKT6T2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cedb51c8f4ddf9c8ae09d256c454d14ae4552083caf181849793bcb7e818b5. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/UKT6T2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e05633d24a1dda207e21ad7a8ad89ffee5261201c9e721c827cde8937604331. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/UKT6T2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acea2a35a65573f1b8315c52f5acd7013e8dd4354338f4b5d7dabd9c9ed54e7. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/UKT6T2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969ae9ac855dd24593a5d1011f0302ac1114593be034529eb4f527070d28a751. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/UKT6T2400013.