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 0xb918835da1e6e325d6a9bcfe3217fbbb9b37671d7a425b8640fd3c4a07ed7085. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17574fbb-7cb3-4d44-b595-64bae87aee55.json and https://artists.proofprofile.net/proofs/artist/17574fbb-7cb3-4d44-b595-64bae87aee55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lost Souls (16 Missed Calls) - lofi version
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 0x315fabd7d9978372fc652ac1a1683c097d412059481c49dec975deb06582a31f. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/QZS642213858.
Dark Red (only you, my girl) - lofi version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf68b1c079a79eccf0bd98a333632980d426380d1c2c1b78c8b4c60b9557fa12. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/QZKDK2209708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb431ecc0c0ee93d97c77f797e0e018237b992d47a176bc4af507d53a6d2b179. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMHN2247753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212a5e7b10e43b81e2cad0812ec3f026fdefdeac5655f610af706c1c1d17e5a7. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:38Z), 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/QZS632346216.
Only Love Can Hurt Like This - lofi version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d0b105f64d6cf027730d0315b8bec8ebf838b1bb96c1f3c2fcc549b705b914. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:53Z), 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/QM42K2353022.