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 0xe031d644fab37f21d5a59d47a5dd220d14a4a27bbc5820ae7633064af8a638d4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff784b08-dd8f-4750-ad0e-099c5c26e7e8.json and https://artists.proofprofile.net/proofs/artist/ff784b08-dd8f-4750-ad0e-099c5c26e7e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Natural White Noise for Babies Extended Tracks
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 0xbfd09bfe56440763e51e314252359dc5f2c8269f89737f47fd537d898a61dae0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:33:09Z), 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/TCACX1748607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d42013b194161d004e4b8aa4a0fedfb37257881ad5390dcd96f31b6d8d6e42c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCACX1748623.
Soothing Home Sleep Sounds for Calming Babies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb981548bc52b1e676c62621cef136e1ea933c6cb6e1734a948d8901109e972c2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCADZ1860104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc5a77b1e152a363aed794edd000eda2ca9b57b3193bde976dceb2aed8038e9. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCADZ1860105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee52ef91e2bcd7e91d13dc8a1dfa325dc6f9dca6b4ff95236580692810199734. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCADZ1860107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6faf4f588e056b2ec9485f12321a6a47b5519c28b931e82dc30ee2d9ca27aba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:52Z), 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/TCADZ1860119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a6874af7e6ae1e8d33504a92948b1152ee5bd27fc14dbd60fc980ab52e6bb6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADZ1860134.