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 0x064e050c3a77dfc7c91925d7b64ff60cd99675991796f64feeed099fc3b1c729. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff8c6fae-370e-4cbd-b359-bd9048d81aa4.json and https://artists.proofprofile.net/proofs/artist/ff8c6fae-370e-4cbd-b359-bd9048d81aa4.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 0xdf8edea4c3246873e13c8e4aedb66745504e419b7798181857c49575e0cc5fc2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NLG980600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1309f6757fb2ec6e907352fafbab1ab684ee655d3c8232128a8dda1eafad02. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:23:54Z), 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/NLD320800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25de2b9567982a7e340993f8cc127ba738d2fe9a079615bbc4a40ddc867ec91. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NLD320800005.
Everyday I Work on the Road - Album Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5274d3739048bad0c12997dea7cfb3061a2443c1598fcb7e8c782a2e6c25d4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:22:03Z), 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/NLD320800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47527974b9612ca159c9d3d80585101c0f3c5ba6802955a87a374a271a7a3af9. 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/NLG660800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47527974b9612ca159c9d3d80585101c0f3c5ba6802955a87a374a271a7a3af9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLG660800106.