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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509d7d29ac314cc23d152b7546f28ece9c2a52b8894be8ae8a4552340a96e8ce. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55b42a04-e37e-4448-ba52-5f61a63030c7.json and https://artists.proofprofile.net/proofs/artist/55b42a04-e37e-4448-ba52-5f61a63030c7.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31e81535af739d176b59620a3cf6bd32381abca420a168fa9ba28c62a0918dd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USA5Q0310601.
Square Check Tune / When Cheer Fills the Hearts of My Friends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f4627a345471807223a0f2ea58de40348dd17b2aedddd43016da7bbabcf333. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USA5Q0310602.
O Lord Protect Thy Chosen Flock / My Carnal Life I Will Lay Down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca7ba1be803884226a98d883c62df12d82959b6701c28ec29b125882987344. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA5Q0310603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023a45e7a9613e918a96e1ad8b1d3d4f9d5131b580b89b9f95f569e477da60b6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USA5Q0310604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb02676ff0e4906f958cf4fea1b11e32aad550a615e9d5b4a2f0775b4e5e9415. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA5Q0310605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773bf24d5a3eaf2350e0878920f251af3971f56fc9a7529af602174a4d612fde. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USA5Q0310606.
Father James's Song / Treasures of the Gospel / I Will Bow and Besimple
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78e7415df69f846763aa30e1becdb653ea9fb9c7ab4898e98a5c797df76b3a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA5Q0310607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35ff855835676d16b878a182ca473104c70dacb0cff5f1dc290f7d7860aba27. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA5Q0310608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e069e3d29bb195d5b724ce859d6706c0408bc97c1a8289b25759785ba92bb5a. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USA5Q0310609.
The Saviour's Universal Prayer / And Again Heavenly Father
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05abb427ea3c0972a205fbb1d31f85cc89e3b1fb448caf937dccd929bb604ce3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USA5Q0310610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9293143b356c146364c6322104dc6dc6f3bb777916b7a678bc845eb391dec0. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USA5Q0310611.