1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x14766ad9c4e4532a1335e8d6a077cb22e6bef97805fd003e174745abe4db1b71. 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/df54639e-49a2-4a97-adbf-60eaa66b856b.json and https://artists.proofprofile.net/proofs/artist/df54639e-49a2-4a97-adbf-60eaa66b856b.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 → block OTSBitcoinBlock must exist at that height 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 0xc1eb615be77dbcfc5c293157a70d8c6d19a9874c218233fddbbc314250368be6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:42:08Z), 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/IL7192000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cbb7144604bdb52fa867d17e3631b11e1f690db794284450913925316d3b20. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IL7192100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8275de15bead484576c7d6bf18f9f706c3b709f5e7473468ee17ef364d1d27cf. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/IL7192100478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ddfe76662566cf95978fef33d473c621e7b270451a424d233df9145298bb49. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IL1012200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f889f62d5d0a7a2bd65b4f38c5a7d77bab13395f4a02ab044f8f4bd2003be5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:51Z), 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/IL7192300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8751df8343e07bd155f7271ded723ef8575d7a446d62062dc9b3199d42e3bdb6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL7192300927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c591cba5af6808663990279afb72c7cb102e411c97b11469c1a09e981be63fa. 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/IL5842555295.