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 0x0b083fc49c31e763d28cc9f9950f6b4c4cadd542cfb0c9edafa8c75186cdef72. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35ee4b2b-45eb-44a3-af3b-b8097b911833.json and https://artists.proofprofile.net/proofs/artist/35ee4b2b-45eb-44a3-af3b-b8097b911833.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Until It All Makes Sense (Instrumentals)
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 0x86d8e01ea93438cef9f18cb0990e15c823067754094ed1a056cb6c1c9034c8e1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ21974561.
Most of My Friends Are Stuck on the Internet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aeffc9a7fe952772b9a5e70fd76962dc667d663d37a9d4cfbcc30a6461912e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USACX2002412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448a4c59cd5189ae81f42961ff2ecacd6d5f15ca6ef921fa3867a4c734e0ddfc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USACX1700261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1abe5669f93fed339f436278a702df302a6ba9e81957736617965eaa6cc308. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USACX2002113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35007ac60ff0cfcc27994b7558a6b7ee9ac21f2923600437f71154202edbf41. 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/USACX1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167ee774cd1796edbcea7b3044c91c32518dda76afada2199bd164ddb12cb7f0. 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/USACX1900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b6159f0e72c6eb1e19ae61367b693cebfb70fcefbbfd91d9b98a48187939a1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USACX1700880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14633a93dd8516229e29f3e2c9fcea18eb4c6d2d15c2370829f165f16bbe3488. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZTB92467782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ad97499cc553411ce02471331f094690d5219c5c09bae3597207758cce4ba8. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZZ7R2466933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0426439cca0641c298fa68b6f3f40777d714215a9f9b5d53b9a8def3b24172b6. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZZ7R2466934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b1eeb1ff6d523223e00f7210031608700a74b133138877a7ac5388a87b8886. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZRP52538544.
Where You At (feat. James Gardin & Jahshua Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010eafeeaa0797c12bdcd849c30a827068ae14a2bdc7c4ef48ca7b2acaa2adfc. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USACX1800100.
This Life (feat. James Gardin & Macklyn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301e28af2e94c30244eba87119819f62e114927c38b0fca0cb1bd5800da0f126. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USACX1900298.