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 0xf2369a28f90ba4cda71d4a532f45036b9336ccca5e9f648cfdb5c57e62dfb34d. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/211adac9-a229-4030-9342-50efa037fb9a.json and https://artists.proofprofile.net/proofs/artist/211adac9-a229-4030-9342-50efa037fb9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Christian Worship Jazz Music for Quiet Time & Prayer: Soothing Piano
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 0xceca31fa80c1545f7b63809742207bbcf19b6052e8f896f5f790a62bf7ad0dea. 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/PL2E32491990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34feac0545ce6d8b203efccb4f6ebb70fdea47c6c91cf44ffd88bb4f8464114. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:38:07Z), 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/PL2E32491991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5efce7b0a83c54a16c576897e01781c57db8c985c0c3935c705389b38ada9c0. 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/PL2E32491993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b228f227ffda875d89f5f5c2b5e56a76c10bd9d3decf7d90ec85c926c8a441. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:38Z), 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/PL2E32491994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904a2be980fd76e0c1e0b4571d93ac3c4477d16ac1920bf12ee76ac04bf3c79d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:37Z), 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/PL2E32491995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9ac85be60cf134f1eb2dbca7e5491ba4d3e7a1e8769d671a62f96eecfc4be3. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/PL2E32491996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ffbacaade22eed49f20c8435ddb3d75b6e05ea2ee2e43888632b1a01f6c24b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PL2E32491997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e538cec57df6ceca72e883bba062424a0899f4873f4e314176a0d60690a989. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PL2E32491998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cdc37f8a8e9399efe853b557dee73a89034b1c8d72574c97fa03ccdfaf6621. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:28Z), 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/PL2E32491999.