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 0x04bd8ccc66b2215c57e72704cc4807587ac1eea87acac1b3a26d8a57be5f3af0. 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/c290c85f-ada9-48cc-9b75-71201f19cca1.json and https://artists.proofprofile.net/proofs/artist/c290c85f-ada9-48cc-9b75-71201f19cca1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sleep Like A Baby Vol 1: Music Box Versions
Radio Favorite Lullabies April 2023 (Lullaby Covers Of The Best Songs Of April)
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 0x7b7e2db68eb0a33e143f751428a7911a6bf37c140b8696b23d63f64f0435f213. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM3DF2202607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf623605c33df60ab45037bfca41504d8b205abea115266298640f12e82edfc50. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QM3DF2202608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea04c76beaf4e263ae56df09fc9b0fe4249e18f99fddfe99b6897bd14baddf1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3DF2421308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9992f53149bd36b7a1fa0bebce4c9b28e39597f8a30a1888d30f3cb06d8eb6e3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG2444764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe473d1ad24e6238c8b28c22fdeb5b74c2dc145452188e14c39de83580bb4e56d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:31:00Z), 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/USANG2444767.