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 0xcc23a8c16426b559c176ef0878b55e37a611fd9551bfb71fd9a1f989e9c85c48. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9de5f596-dbbf-4bf5-8add-780f15ee7330.json and https://artists.proofprofile.net/proofs/artist/9de5f596-dbbf-4bf5-8add-780f15ee7330.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
An Investigation Into Perceived Heaviness
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 0x67465f2030b15f49accac7dd7ab34cf40689265933feb12021cbc8643392f0e2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:53:26Z), 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/QZNWW2047195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1daf78d7f15759b9b8dad84139916628c236523cffd96afd6e35d9caac3124. 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/QZNWQ2483618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21d11725f0044e588097a483e40dbd147d8cc1e3a4db2d4c3c90fef150f4f4f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:15:12Z), 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/QZNWQ2484527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d29480ad63f5ecf73ea1ce9174785cf471aa5a635e6197597173c611c0cd92. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:37:11Z), 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/QZNWQ2484530.