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 0xdb5e94b71bdccad6942318ea4bbbbe38f0c831118b9c0bc832c7129c165c25bd. 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/fe48e33e-c3a1-4697-83d9-94fb2b95cc92.json and https://artists.proofprofile.net/proofs/artist/fe48e33e-c3a1-4697-83d9-94fb2b95cc92.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 0xdab98c7c457c5017055a7cf12a9c1f4c0573bfd984cb27f53f5c8e22be720312. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:44Z), 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/FRX452059475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3410ca4c962905d46b08bfc0a34012872a7c3b9f67c473e37732d540652af9c1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:54:30Z), 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/FRX452059477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d32afcb85e192e13d21693e63883d87c6faaad2ae94611e8c029d403438723f. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:31:46Z), 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/FRX452059481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f400c1998553912ce324db0215a1bb2bd7722f18881f9c65180eeca09acc4c7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/FRX452059865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0733a8c8bcd36e7899a21540df9408c7fe9383d9e7541694fde3a852401fb5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:58Z), 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/FRX452059866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538fe515d18862a948855312d2e4ac0d2b12b2c3266e42e2657a56855859c5d2. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FRX452059868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fd7182129bae199664f6ba33389ab495f88c8893b0b25b26e50d94f64b0c15. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FRX452059872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b75792dd392793dcf671a63fd77aa55b53f67e0b1b14496c37c2daeea51680. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FRX452059874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfa4cf1df2e15273e4bba898720556ce4ca00ab959907ba1c37cc4285e6e31e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:45:15Z), 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/FRX452066693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236fa25e671a709c036f03ec78dfe3455525804ba877f148de064471cf16e029. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FR10S2150718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e81f0e0de96298e23b9c2e3d95897c0cec623413711957b0930fe42df8f579. 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/IL7192501466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec79c987d6bc61e5e8a04ae9d742cb27fcc0c03426d6e64115a7652545e7ef. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/IL7192501612.